Uniform Sector
Dual and Quad Serial Flash

GD25B16E
DATASHEET

http://www.elm-tech.com

1

Rev.1.0

GD25B16E

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Contents
1

FEATURES .........................................................................................................................................................42

GENERAL DESCRIPTIONS..............................................................................................................................5

3

MEMORY ORGANIZATION ...............................................................................................................................7

4

DEVICE OPERATIONS......................................................................................................................................8
4.1

SPI MODE .............................................................................................................................................................. 8

5

DATA PROTECTION ..........................................................................................................................................96

STATUS REGISTER ........................................................................................................................................ 117

COMMAND DESCRIPTIONS .......................................................................................................................... 14
7.1

WRITE ENABLE (WREN) (06H) ................................................................................................................................ 17

7.2

WRITE DISABLE (WRDI) (04H) ................................................................................................................................ 17

7.3

READ STATUS REGISTER (RDSR) (05H OR 35H) .......................................................................................................... 17

7.4

WRITE STATUS REGISTER (WRSR) (01H) ................................................................................................................... 18

7.5

WRITE ENABLE FOR VOLATILE STATUS REGISTER (50H) ................................................................................................. 18

7.6

READ DATA BYTES (READ) (03H)............................................................................................................................. 19

7.7

READ DATA BYTES AT HIGHER SPEED (FAST READ) (0BH) .............................................................................................. 19

7.8

DUAL OUTPUT FAST READ (3BH) .............................................................................................................................. 20

7.9

QUAD OUTPUT FAST READ (6BH) ............................................................................................................................. 21

7.10

DUAL I/O FAST READ (BBH) .................................................................................................................................... 21

7.11

QUAD I/O FAST READ (EBH) ................................................................................................................................... 22

7.12

SET BURST WITH WRAP (77H) ................................................................................................................................. 24

7.13

PAGE PROGRAM (PP) (02H) .................................................................................................................................... 24

7.14

QUAD PAGE PROGRAM (32H) .................................................................................................................................. 25

7.15

SECTOR ERASE (SE) (20H) ....................................................................................................................................... 26

7.16

32KB BLOCK ERASE (BE) (52H) ............................................................................................................................... 26

7.17

64KB BLOCK ERASE (BE) (D8H)............................................................................................................................... 27

7.18

CHIP ERASE (CE) (60/C7H) ..................................................................................................................................... 27

7.19

READ MANUFACTURE ID/ DEVICE ID (REMS) (90H) ................................................................................................... 28

7.20

READ IDENTIFICATION (RDID) (9FH) ......................................................................................................................... 28

7.21

READ UNIQUE ID (4BH) .......................................................................................................................................... 29

7.22

ERASE SECURITY REGISTERS (44H) ............................................................................................................................ 30

7.23

PROGRAM SECURITY REGISTERS (42H) ....................................................................................................................... 30

7.24

READ SECURITY REGISTERS (48H) ............................................................................................................................. 31

7.25

ENABLE RESET (66H) AND RESET (99H) ..................................................................................................................... 32

7.26

PROGRAM/ERASE SUSPEND (PES) (75H) ................................................................................................................... 32

7.27

PROGRAM/ERASE RESUME (PER) (7AH) ................................................................................................................... 33

7.28

DEEP POWER-DOWN (DP) (B9H) ............................................................................................................................. 33

http://www.elm-tech.com

2

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash
7.29

RELEASE FROM DEEP POWER-DOWN AND READ DEVICE ID (RDI) (ABH) ......................................................................... 34

7.30

READ SERIAL FLASH DISCOVERABLE PARAMETER (5AH)................................................................................................. 34

ELECTRICAL CHARACTERISTICS .............................................................................................................. 3688.1

POWER-ON TIMING ................................................................................................................................................ 36

8.2

INITIAL DELIVERY STATE ........................................................................................................................................... 36

8.3

ABSOLUTE MAXIMUM RATINGS ................................................................................................................................ 36

8.4

CAPACITANCE MEASUREMENT CONDITIONS................................................................................................................. 37

8.5

DC CHARACTERISTICS .............................................................................................................................................. 38

8.6

AC CHARACTERISTICS .............................................................................................................................................. 39

ORDERING INFORMATION............................................................................................................................ 41

9

9.1
10

11

GD25B16E

VALID PART NUMBERS ............................................................................................................................................ 42
PACKAGE INFORMATION ......................................................................................................................... 43

10.1

PACKAGE SOP8 150MIL ........................................................................................................................................ 43

10.2

PACKAGE SOP8 208MIL ........................................................................................................................................ 44

10.3

PACKAGE USON8 (3X2MM, 0.45MM THICKNESS) ....................................................................................................... 45

10.4

PACKAGE USON8 (3X4MM) .................................................................................................................................... 46

10.5

PACKAGE USON8 (4X4MM, 0.45MM THICKNESS) ....................................................................................................... 47

10.6

PACKAGE WSON8 (6X5MM) ................................................................................................................................... 48
REVISION HISTORY .................................................................................................................................... 49

http://www.elm-tech.com

3

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

1 FEATURES◆ 16M-bit Serial Flash◆ Fast Program/Erase Speed- 2048K-Byte- Page Program time: 0.4ms typical- 256 Bytes per programmable page

- Sector Erase time: 45ms typical- Block Erase time: 0.15s/0.25s typical- Chip Erase time: 6s typical◆ Standard, Dual, Quad SPI- Standard SPI: SCLK, CS#, SI, SO- Dual SPI: SCLK, CS#, IO0, IO1◆ Flexible Architecture- Quad SPI: SCLK, CS#, IO0, IO1, IO2, IO3- Uniform Sector of 4K-Byte- Uniform Block of 32/64K-Byte◆ High Speed Clock Frequency- 133MHz for fast read with 30PF load

◆ Low Power Consumption- Dual I/O Data transfer up to 266Mbits/s- 11μA typical standby current- Quad I/O Data transfer up to 532Mbits/s- 1μA typical deep power down current◆ Software/Hardware Write Protection◆ Advanced Security Features- Write protect all/portion of memory via software- 128-bit Unique ID for each device- Top/Bottom Block protection- Serial Flash Discoverable parameters (SFDP) register- 2x1024-Byte Security Registers With OTP Locks◆ Endurance and Data Retention- Minimum 100,000 Program/Erase Cycles◆ Single Power Supply Voltage- 20-year data retention typical- Full voltage range: 2.7-3.6V◆ Allows XiP (eXecute in Place) Operation◆ Package Information- High speed Read reduce overall XiP instruction fetch time

- SOP8 150mil- Continuous Read with Wrap further reduce data latency to- SOP8 208mil

fill up SoC cache- USON8 (3x2mm, 0.45mm thickness)- USON8 (3x4mm)- USON8 (4x4mm, 0.45mm thickness)- WSON8 (6x5mm)

http://www.elm-tech.com

4

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash2

GD25B16E

GENERAL DESCRIPTIONSThe GD25B16E (16M-bit) Serial flash supports the standard Serial Peripheral Interface (SPI), and the Dual/Quad SPI:
Serial Clock, Chip Select, Serial Data I/O0 (SI), I/O1 (SO), I/O2, I/O3. The Dual I/O data is transferred with speed of
266Mbit/s, and the Quad I/O data is transferred with speed of 532Mbit/s.

CONNECTION DIAGRAM
CS#

1

8

VCC

CS#

1

SO
(IO1)

2

7

IO3

SO
(IO1)

2

IO2

3

6

SCLK

IO2

VSS

4

5

SI
(IO0)

VSS

Top View

8

VCC

7

IO3

3

6

SCLK

4

5

SI
(IO0)

8 - LEAD USON/WSONTop View

8 - LEAD SOPPIN DESCRIPTION
Table 1. Pin Description for SOP8/USON8/WSON8 Package
Pin No.

Pin Name

I/O

Description

1

CS#

I

Chip Select Input

2

SO (IO1)

I/O

Data Output (Data Input Output 1)

3

IO2

I/O

Data Input Output 2

4

VSS

5

SI (IO0)

I/O

Data Input (Data Input Output 0)

6

SCLK

I

Serial Clock Input

7

IO3

I/O

Data Input Output 3

8

VCC

GroundPower Supply

Note: CS# must be driven high if chip is not selected. Please don’t leave CS# floating any time after power is on.

http://www.elm-tech.com

5

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

StatusRegister

IO2
IO3

SCLK

SPI
Command &Control Logic

CS#

High Voltage
Generators
Page Address
Latch/Counter

SI(IO0)Flash
MemoryColumn Decode And
256-Byte Page Buffer

SO(IO1)

Byte Address
Latch/Counter

http://www.elm-tech.com

Write Protect Logic
and Row Decode

BLOCK DIAGRAM

6

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash3

GD25B16E

MEMORY ORGANIZATION

GD25B16E
Each device has

Each block has

Each sector has

Each page has

2M

64/32K

4K

256

Bytes

8K

256/128

16

-

pages

512

16/8

-

-

sectors

32/64

-

-

-

blocksUNIFORM BLOCK SECTOR ARCHITECTURE
GD25B16E 64K Bytes Block Sector Architecture
Block
31

30

……

……

2

1

0

http://www.elm-tech.com

SectorAddress range

511

1FF000H

1FFFFFH

……

……

……

496

1F0000H

1F0FFFH495

1EF000H

1EFFFFH

……

……

……

480

1E0000H

1E0FFFH

……

……

……

……

……

……

……

……

……

……

……

……

……

……

……

……

……

……

47

02F000H

02FFFFH

……

……

……

32

020000H

020FFFH

31

01F000H

01FFFFH

……

……

……

16

010000H

010FFFH

1500F000H

00FFFFH

……

……

……

0

000000H

000FFFH

7

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

4 DEVICE OPERATIONS
4.1

SPI ModeStandard SPI
The GD25B16E features a serial peripheral interface on 4 signals bus: Serial Clock (SCLK), Chip Select (CS#), Serial Data
Input (SI) and Serial Data Output (SO). Both SPI bus mode 0 and 3 are supported. Input data is latched on the rising edgeof SCLK and data shifts out on the falling edge of SCLK.
Dual SPIThe GD25B16E supports Dual SPI operation when using the “Dual Output Fast Read” and “Dual I/O Fast Read” (3BH andBBH) commands. These commands allow data to be transferred to or from the device at twice the rate of the standard SPI.
When using the Dual SPI commands, the SI and SO pins become bidirectional I/O pins: IO0 and IO1.
Quad SPIThe GD25B16E supports Quad SPI operation when using the “Quad Output Fast Read”, “Quad I/O Fast Read” (6BH, EBH)
commands. These commands allow data to be transferred to or from the device at four times the rate of the standard SPI.
When using the Quad SPI commands, the SI and SO pins become bidirectional I/O pins: IO0 and IO1, , in addition to IO2and IO3 pins. For GD25B16E, the QE bit is set to 1 as default and cannot be changed.

http://www.elm-tech.com

8

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash5

GD25B16E

DATA PROTECTION

The GD25B16E provide the following data protection methods:◆

Write Enable (WREN) command: The WREN command is set the Write Enable Latch bit (WEL). The WEL bit will
return to reset by the following situation:-Power-Up / Software Reset (66H+99H)-Write Disable (WRDI)-Write Status Register (WRSR)-Page Program (PP)-Sector Erase (SE) / Block Erase (BE) / Chip Erase (CE)◆Software Protection Mode: The Block Protect bits (BP4-BP0) define the section of the memory array that can beread but not changed.

◆

Deep Power-Down Mode: In Deep Power-Down Mode, all commands are ignored except the Release from DeepPower-Down Mode command and Software Reset (66H+99H).

◆

Write Inhibit Voltage (VWI): Device would reset automatically when VCC is below a certain threshold VWI.
Table 2. GD25B16E Protected area size (CMP=0)
Status Register Content

Memory Content

BP4

BP3

BP2

BP1

BP0

BlocksAddresses

Density

Portion

X

X

0

0

0

NONE

NONE

NONE

NONE

0

0

0

0

1

31

1F0000H-1FFFFFH

64KB

Upper 1/32

0

0

0

1

0

30 to 31

1E0000H-1FFFFFH

128KB

Upper 1/16

0

0

0

1

1

28 to 31

1C0000H-1FFFFFH

256KB

Upper 1/8

0

0

1

0

0

24 to 31180000H-1FFFFFH

512KB

Upper 1/4

0

0

1

0

1

16 to 31

100000H-1FFFFFH

1M

Upper 1/2

0

1

0

0

1

0

000000H-00FFFFH

64KB

Lower 1/32

0

1

0

1

0

0 to 1000000H-01FFFFH

128KB

Lower 1/16

0

1

0

1

1

0 to 3000000H-03FFFFH

256KB

Lower 1/8

0

1

1

0

0

0 to 7000000H-07FFFFH

512KB

Lower 1/4

0

1

1

0

1

0 to 15000000H-0FFFFFH

1M

Lower 1/2

X

X

1

1

X

0 to 31000000H-1FFFFFH

2M

ALL

1

0

0

0

1

31

1FF000H-1FFFFFH

4KB

Top Block

1

0

0

1

0

31

1FE000H-1FFFFFH

8KB

Top Block

1

0

0

1

1

31

1FC000H-1FFFFFH

16KB

Top Block

1

0

1

0

X

31

1F8000H-1FFFFFH

32KB

Top Block

1

1

0

0

1

0

000000H-000FFFH

4KB

Bottom Block

1

1

0

1

0

0

000000H-001FFFH

8KB

Bottom Block

1

1

0

1

1

0

000000H-003FFFH

16KB

Bottom Block

1

1

1

0

X

0

000000H-007FFFH

32KB

Bottom Block

http://www.elm-tech.com

9

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Table 3. GD25B16E Protected area size (CMP=1)
Status Register Content

Memory Content

BP4

BP3

BP2

BP1

BP0

BlocksAddresses

Density

Portion

X

X

0

0

0

0 to 31000000H-1FFFFFH

2M

ALL

0

0

0

0

1

0 to 30000000H-1EFFFFH

1984KB

Lower 31/32

0

0

0

1

0

0 to 29000000H-1DFFFFH

1920KB

Lower 15/16

0

0

0

1

1

0 to 27000000H-1BFFFFH

1792KB

Lower 7/8

0

0

1

0

0

0 to 23000000H-17FFFFH

1536KB

Lower 3/4

0

0

1

0

1

0 to 15000000H-0FFFFFH

1M

Lower 1/2

0

1

0

0

1

1 to 31010000H-1FFFFFH

1984KB

Upper 31/32

0

1

0

1

0

2 to 31020000H-1FFFFFH

1920KB

Upper 15/16

0

1

0

1

1

4 to 31040000H-1FFFFFH

1792KB

Upper 7/8

0

1

1

0

0

8 to 31080000H-1FFFFFH

1536KB

Upper 3/4

0

1

1

0

1

16 to 31

100000H-1FFFFFH

1M

Upper 1/2

X

X

1

1

X

NONE

NONE

NONE

NONE

1

0

0

0

1

0 to 31000000H-1FEFFFH

2044KB

Lower 511/512

1

0

0

1

0

0 to 31000000H-1FDFFFH

2040KB

Lower 255/256

1

0

0

1

1

0 to 31000000H-1FBFFFH

2032KB

Lower 127/128

1

0

1

0

X

0 to 31000000H-1F7FFFH

2016KB

Lower 63/64

1

1

0

0

1

0 to 31001000H-1FFFFFH

2044KB

Upper 511/512

1

1

0

1

0

0 to 31002000H-1FFFFFH

2040KB

Upper 255/256

1

1

0

1

1

0 to 31004000H-1FFFFFH

2032KB

Upper 127/128

1

1

1

0

X

0 to 31008000H-1FFFFFH

2016KB

Upper 63/64

http://www.elm-tech.com

10

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash6

GD25B16E

STATUS REGISTER
Table 4. Status Register-SR No.1

No.

Name

Description

Note

S7

SRP0

Status Register Protection Bit

Non-volatile writable

S6

BP4

Block Protect Bit

Non-volatile writable

S5

BP3

Block Protect Bit

Non-volatile writable

S4

BP2

Block Protect Bit

Non-volatile writable

S3

BP1

Block Protect Bit

Non-volatile writable

S2

BP0

Block Protect Bit

Non-volatile writable

S1

WEL

Write Enable Latch

Volatile, read only

S0

WIP

Erase/Write In Progress

Volatile, read only

Table 5. Status Register-SR No.2
No.

Name

Description

Note

S15

SUS

Suspend Bit

Volatile, read only

S14

CMP

Complement Protect Bit

Non-volatile writable

S13

Reserved

Reserved

Reserved

S12

DC

Dummy Configuration Bit

Non-volatile writable

S11

LB1

Security Register Lock Bit

Non-volatile writable (OTP)

S10

LB0

Security Register Lock Bit

Non-volatile writable (OTP)S9QE

Quad Enable Bit

QE = 1 permanently

S8

SRP1

Status Register Protection Bit

Non-volatile writable

The status and control bits of the Status Register are as follows:
WIP bit
The Write in Progress (WIP) bit indicates whether the memory is busy in program/erase/write status register progress. When
WIP bit sets to 1, means the device is busy in program/erase/write status register progress, when WIP bit sets 0, means
the device is not in program/erase/write status register progress.
WEL bit
The Write Enable Latch (WEL) bit indicates the status of the internal Write Enable Latch. When set to 1 the internal Write
Enable Latch is set, when set to 0 the internal Write Enable Latch is reset and no Write Status Register, Program or Erasecommand is accepted.
BP4, BP3, BP2, BP1, BP0 bits
The Block Protect (BP4, BP3, BP2, BP1, and BP0) bits are non-volatile. They define the size of the area to be software
protected against Program and Erase commands. These bits are written with the Write Status Register (WRSR) command.
When the Block Protect (BP4, BP3, BP2, BP1, BP0) bits are set to 1, the relevant memory area (as defined in Table 2&3)
becomes protected against Page Program (PP), Sector Erase (SE) and Block Erase (BE) commands. The Chip Erase (CE)command is executed, if the Block Protect (BP2, BP1, and BP0) bits are 0 and CMP=0 or the Block Protect (BP2, BP1, andhttp://www.elm-tech.com

11

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

BP0) bits are 1 and CMP=1.
SRP1, SRP0 bits
The Status Register Protect (SRP1 and SRP0) bits are non-volatile Read/Write bits in the status register. The SRP bits
control the method of write protection: software protection, power supply lock-down or one time programmable protection.
SRP1

SRP0

Status Register00

Software Protected

10Power Supply Lock-Down(1)(2)

1

1

One Time Program(2)Description
The Status Register can be written to after a Write Enablecommand, WEL=1.(Default)
Status Register is protected and cannot be written to again until
the next Power-Down, Power-Up cycle.
Status Register is permanently protected and cannot be written
to.

NOTE:
1. When SRP1, SRP0= (1, 0), a Power-Down, Power-Up cycle will change SRP1, SRP0 to (0, 0) state.
2. This feature is available on special order. Please contact GigaDevice for details.
QE bitThe Quad Enable (QE) bit is a non-volatile bit in the Status Register that allows Quad operation. The default value of QE
bit is 1 and it cannot be changed, so that the IO2 and IO3 pins are enabled all the time.
LB1, LB0 bits
The LB1 and LB0 bits are non-volatile One Time Program (OTP) bits in Status Register (S11 and S10) that provide the write
protect control and status to the Security Registers. The default state of LB1 and LB0 bits are 0, the security registers areunlocked. The LB1 and LB0 bits can be set to 1 individually using the Write Register instruction. The LB1 and LB0 bits are
One Time Programmable, once they are set to 1, the Security Registers will become read-only permanently.
DC bit
The Dummy Configuration (DC) bit is non-volatile, which selects the number of dummy cycles between the end of address
and the start of read data output. Dummy cycles provide additional latency that is needed to complete the initial read accessof the flash array before data can be returned to the host system. Some read commands require additional dummy cycles
as the SCLK frequency increases.
The following dummy cycle tables provide different dummy cycle settings that are configured.
Command
BBH
EBH

DC bitNumbers of Dummy Cycles

Freq.(MHz)

0 (default)

4

104

1

8

133R

0 (default)

6

104

1

10

133R

Note:
1. “R” means VCC range=3.0V~3.6V.
Reserved bit
It is recommended to set the value of the reserved bit as “0”.

http://www.elm-tech.com

12

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

CMP bit
The CMP bit is a non-volatile Read/Write bit in the Status Register (S14). It is used in conjunction with the BP4-BP0 bits toprovide more flexibility for the array protection. Please see the Status registers Memory Protection table for details. The
default setting is CMP=0.
SUS bit
The SUS bit is a read only bit in the status register (S15) that is set to 1 after executing an Erase/Program Suspend (75H)
command. The SUS bit is cleared to 0 by Erase/Program Resume (7AH) command, software reset (66H+99H) command,
as well as a power-down, power-up cycle.

http://www.elm-tech.com

13

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash7

GD25B16E

COMMAND DESCRIPTIONSAll commands, addresses and data are shifted in and out of the device, beginning with the most significant bit on the firstrising edge of SCLK after CS# is driven low. Then, the one-byte command code must be shifted in to the device, with mostsignificant bit first on SI, and each bit is latched on the rising edges of SCLK.
Every command sequence starts with a one-byte command code. Depending on the command, this might be followed byaddress bytes, or by data bytes, or by both or none. CS# must be driven high after the last bit of the command sequence
has been completed. For the command of Read, Fast Read, Read Status Register or Release from Deep Power-Down,
and Read Device ID, the shifted-in command sequence is followed by a data-out sequence. All read instruction can becompleted after any bit of the data-out sequence is being shifted out, and then CS# must be driven high to return todeselected status.
For the command of Page Program, Sector Erase, Block Erase, Chip Erase, Write Status Register, Write Enable, Write
Disable or Deep Power-Down command, CS# must be driven high exactly at a byte boundary, otherwise the command isrejected, and is not executed. That is CS# must be driven high when the number of clock pulses after CS# being driven low
is an exact multiple of eight. For Page Program, if at any time the input byte is not a full byte, nothing will happen and WEL
will not be reset.
Table 6. Commands
Command Name

Byte 1

Write Enable

06H

Write Disable

04H

Read Status Register-1
Read Status Register-2
Write Status Register1&2
Volatile SR write
EnableByte 2Byte 305H(S7-S0)(cont.)

35H(S15-S8)(cont.)

01H

S7-S0

S15-S8Byte 4

Byte 5

Byte 6

Byte 7

Byte 8Byte 950H

Read Data

03H

A23-A16

A15-A8

A7-A0(D7-D0)(cont.)

Fast Read

0BH

A23-A16

A15-A8

A7-A0

dummy

(D7-D0)(cont.)

Dual Output Fast Read

3BH

A23-A16

A15-A8

A7-A0

dummy

(D7-D0)(1)(cont.)6BH

A23-A16

A15-A8

A7-A0

dummy

(D7-D0)(2)(cont.)

Dual I/O Fast Read

BBH

A23-A16(3) A15-A8(3)A7-A0(3)

M7-M0(4) (D7-D0)(1)(cont.)

Quad I/O Fast Read

EBH

A23-A16(5) A15-A8(5)A7-A0(5)M7-M0(6)dummy (D7-D0)(2) (cont.)

Set Burst with Wrap

77H

dummy(7)dummy(7)dummy(7) W7-W0(7)Page Program

02H

A23-A16

A15-A8

A7-A0

D7-D0

Next Byte

Quad Page Program

32H

A23-A16

A15-A8

A7-A0

D7-D0(8)Next Byte

Sector Erase

20H

A23-A16

A15-A8

A7-A0

Block Erase (32K)

52H

A23-A16

A15-A8

A7-A0

Block Erase (64K)

D8H

A23-A16

A15-A8A7-A0

Quad Output Fast
Read

http://www.elm-tech.com

14

Rev.1.0

dummyUniform Sector
Dual and Quad Serial Flash
Chip Erase
Read Manufacturer/

C7/60H
90H

00H

Read Identification

9FH(M7-M0)

Read Unique ID

4BH

Device ID

Erase Security
Registers(9)Program Security
Registers(9)Read Security
Registers(9)Deep Power-Down
Release From DeepPower-Down

JDID8)

JDID0)

00H

00H

00H

44H

A23-A16

A15-A8

A7-A0

42H

A23-A16

A15-A8

A7-A0

D7-D0

Next Byte

48H

A23-A16

A15-A8

A7-A0

dummy

(D7-D0)

ABH

dummy

dummy

dummy

5AH

A23-A16

A15-A8A7-A0(cont.)(cont.)
dummy(UID7UID0)(cont.)(cont.)

75H
7AH
B9H
ABH

Release From DeepPower-Down and Read

DID0)

(JDID7-

99H

ResumeMID0)(JDID15-

Reset

Program/Erase(DID7-

00H

66H

Suspend(MID7-

00H

Enable Reset
Program/Erase

GD25B16E

Device ID(DID7DID0)(cont.)

Read Serial Flash
Discoverable
Parameter
Note:
1. Dual Output data
IO0 = (D6, D4, D2, D0)
IO1 = (D7, D5, D3, D1)
2. Quad Output Data
IO0 = (D4, D0, …)
IO1 = (D5, D1, …)
IO2 = (D6, D2, …)
IO3 = (D7, D3, …)
3. Dual Input Address
IO0 = A22, A20, A18, A16, A14, A12, A10, A8

A6, A4, A2, A0

IO1 = A23, A21, A19, A17, A15, A13, A11, A9

A7, A5, A3, A1

4. Dual Input Mode bit
IO0 = M6, M4, M2, M0

http://www.elm-tech.com

15

Rev.1.0

dummy(D7-D0)(cont.)

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

IO1 = M7, M5, M3, M1
5. Quad Input Address
IO0 = A20, A16, A12, A8, A4, A0
IO1 = A21, A17, A13, A9, A5, A1
IO2 = A22, A18, A14, A10, A6, A2
IO3 = A23, A19, A15, A11, A7, A3
6. Quad Input Mode bit
IO0 = M4, M0
IO1 = M5, M1
IO2 = M6, M2
IO3 = M7, M3
7. Dummy bits and Wrap Bits
IO0 = (x, x, x, x, x, x, W4, x)
IO1 = (x, x, x, x, x, x, W5, x)
IO2 = (x, x, x, x, x, x, W6, x)
IO3 = (x, x, x, x, x, x, x, x)
8. Quad Output Data
IO0 = D4, D0, …
IO1 = D5, D1, …
IO2 = D6, D2, …
IO3 = D7, D3, …
9. Security Registers Address
Security Register0: A23-A16=00H, A15-A12=0H, A11-A10 = 00b, A9-A0= Byte Address;
Security Register1: A23-A16=00H, A15-A12=1H, A11-A10 = 00b, A9-A0= Byte Address;

TABLE OF ID DEFINITIONS
GD25B16E
Operation Code

MID7-MID0

ID15-ID8

ID7-ID0

9FH

C8

40

15

90H

C8

14

ABH

http://www.elm-tech.com

14

16

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash
7.1

GD25B16E

Write Enable (WREN) (06H)

The Write Enable (WREN) command is for setting the Write Enable Latch (WEL) bit. The Write Enable Latch (WEL) bit must
be set prior to every Page Program (PP), Quad Page Program (QPP), Sector Erase (SE), Block Erase (BE), Chip Erase(CE), Write Status Register (WRSR) and Erase/Program Security Registers command.
The Write Enable (WREN) command sequence: CS# goes low  sending the Write Enable command  CS# goes high.
Figure 1. Write Enable Sequence Diagram
CS#
0

1

2

3

4

5

6

7

SCLK
CommandSI

06H
High-ZSO

7.2 Write Disable (WRDI) (04H)
The Write Disable command is for resetting the Write Enable Latch (WEL) bit. The Write Enable Latch (WEL) bit may be
set to 0 by issuing the Write Disable (WRDI) command to disable Page Program (PP), Quad Page Program (QPP), Sector
Erase (SE), Block Erase (BE), Chip Erase (CE), Write Status Register (WRSR), that require WEL be set to 1 for execution.
The WRDI command can be used by the user to protect memory areas against inadvertent writes that can possibly corrupt
the contents of the memory. The WRDI command is ignored during an embedded operation while WIP bit =1.
The WEL bit is reset by following condition: Write Disable command (WRDI), Power-up, and upon completion of the Write
Status Register, Page Program, Sector Erase, Block Erase and Chip Erase commands.
The Write Disable command sequence: CS# goes low Sending the Write Disable command CS# goes high.
Figure 2. Write Disable Sequence Diagram
CS#
0

1

2

3

4

5

6

7

SCLK
Command

SI

SO

04H
High-Z

7.3 Read Status Register (RDSR) (05H or 35H)
The Read Status Register (RDSR) command is for reading the Status Register. The Status Register may be read at any
time, even while a Program, Erase or Write Status Register cycle is in progress. When one of these cycles is in progress, it
is recommended to check the Write in Progress (WIP) bit before sending a new command to the device. It is also possible
to read the Status Register continuously. For command code “05H”, the SO will output Status Register bits S7~S0. The
command code “35H”, the SO will output Status Register bits S15~S8.

http://www.elm-tech.com

17

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Figure 3. Read Status Register Sequence Diagram

CS#
0

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

SCLKCommandSI

05H or 35H
High-ZSO

7

S7~S0 or S15~S8 out
6 5 4 3 2 1 0

7

S7~S0 or S15~S8 out
6 5 4 3 2 1 0

7

MSB

MSB

7.4 Write Status Register (WRSR) (01H)
The Write Status Register (WRSR) command allows new values to be written to the Status Register. Before it can be
accepted, a Write Enable (WREN) command must previously have been executed. After the Write Enable (WREN)
command has been decoded and executed, the device sets the Write Enable Latch (WEL).
The Write Status Register (WRSR) command has no effect on S15, S9, S1 and S0 of the Status Register. CS# must be
driven high after the eighth or sixteenth bit of the data byte has been latched in. Otherwise, the Write Status Register (WRSR)
command is not executed. If CS# is driven high after eighth bit of the data byte, the CMP and SRP1 bits will be cleared to
0. As soon as CS# is driven high, the self-timed Write Status Register cycle (whose duration is tW) is initiated. While theWrite Status Register cycle is in progress, the Status Register may still be read to check the value of the Write In Progress(WIP) bit. The Write In Progress (WIP) bit is 1 during the self-timed Write Status Register cycle, and is 0 when it is completed.
When the cycle is completed, the Write Enable Latch (WEL) is reset.
The Write Status Register (WRSR) command allows the user to change the values of the Block Protect (BP4, BP3, BP2,
BP1, and BP0) bits, to define the size of the area that is to be treated as read-only.
Figure 4. Write Status Register Sequence Diagram

CS#
0

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

SCLKCommand

SI
SO

7.5

01H

7

High-ZMSB

Status Register in

Status Register in

1

0 15 14 13 12 11 10 9

6

5

4

3

2

8

MSB

Write Enable for Volatile Status Register (50H)

The non-volatile Status Register bits can also be written to as volatile bits. This gives more flexibility to change the system
configuration and memory protection schemes quickly without waiting for the typical non-volatile bit write cycles or affecting
the endurance of the Status Register non-volatile bits. The Write Enable for Volatile Status Register command must be
issued prior to a Write Status Register command and any other commands can’t be inserted between them. Otherwise,
Write Enable for Volatile Status Register will be cleared. The Write Enable for Volatile Status Register command will not set
the Write Enable Latch bit, it is only valid for the Write Status Register command to change the volatile Status Register bit
values.

http://www.elm-tech.com

18

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Figure 5. Write Enable for Volatile Status Register Sequence Diagram

CS#

0

1

2

3

4

5

6

7

SCLK

CommandSI

50H
High-Z

SO

7.6

Read Data Bytes (READ) (03H)

The Read Data Bytes (READ) command is followed by a 3-byte address (A23-A0), and each bit is latched-in on the risingedge of SCLK. Then the memory content, at that address, is shifted out on SO, and each bit is shifted out, at a Max
frequency fR, on the falling edge of SCLK. The first byte addressed can be at any location. The address is automaticallyincremented to the next higher address after each byte of data is shifted out. The whole memory can, therefore, be readwith a single Read Data Bytes (READ) command. Any Read Data Bytes (READ) command, while an Erase, Program or
Write cycle is in progress, is rejected without having any effects on the cycle that is in progress.
Figure 6. Read Data Bytes Sequence Diagram

CS#
0

1

2

3

4

5

6

7

8

9 10

28 29 30 31 32 33 34 35 36 37 38 39

SCLKCommand

03H

SI
SO

High-Z

24-bit address

3

23 22 21

2

1

0

MSB
MSB

7

6

Data Out1
5 4 3 2 1

Data Out2

0

7.7 Read Data Bytes at Higher Speed (Fast Read) (0BH)
The Read Data Bytes at Higher Speed (Fast Read) command is for quickly reading data out. It is followed by a 3-byte
address (A23-A0) and a dummy byte, and each bit is latched-in on the rising edge of SCLK. Then the memory content, atthat address, is shifted out on SO, and each bit is shifted out, at a Max frequency f C, on the falling edge of SCLK. The first
byte address can be at any location. The address is automatically incremented to the next higher address after each byteof data is shifted out.

http://www.elm-tech.com

19

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Figure 7. Read Data Bytes at Higher Speed Sequence Diagram

CS#
0

1

2

3

4

5

6

8

7

9 10

28 29 30 31

SCLK

24-bit address

CommandSI

23 22 21

0BH

1

2

3

0

High-ZSOCS#
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

SCLK
Dummy Byte

SI

7

6

5

4

3

0

1

2

7 6
MSB

SO

7.8

Data Out1
5 4 3 20

1Data Out2
7 6 5
MSB

Dual Output Fast Read (3BH)

The Dual Output Fast Read command is followed by 3-byte address (A23-A0) and a dummy byte, and each bit is latchedin on the rising edge of SCLK, then the memory contents are shifted out 2-bit per clock cycle from SI and SO.
The first byte addressed can be at any location. The address is automatically incremented to the next higher address after
each byte of data is shifted out.
Figure 8. Dual Output Fast Read Sequence Diagram
CS#
0

1

2

3

4

5

6

7

8

9 10

28 29 30 31

SCLKCommandSISO

24-bit address

3BH

3

23 22 212

1

High-ZCS#
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
SCLK
Dummy Clocks
SISO

http://www.elm-tech.com

4

2

0

6

4

2

0

6

Data Out1
Data Out2
7 5 3 1 7 5 3 1
MSB
MSB

7

6

20

Rev.1.00Uniform Sector
Dual and Quad Serial Flash
7.9

GD25B16E

Quad Output Fast Read (6BH)

The Quad Output Fast Read command is followed by 3-byte address (A23-A0) and a dummy byte, and each bit is latchedin on the rising edge of SCLK, then the memory contents are shifted out 4-bit per clock cycle from IO3, IO2, IO1 and IO0.
The first byte addressed can be at any location. The address is automatically incremented to the next higher address after
each byte of data is shifted out.
Figure 9. Quad Output Fast Read Sequence Diagram

CS#

0

1

2

3

4

5

6

7

8

9 10

28 29 30 31

SCLKCommand
6BH

IO0

3

23 22 212

1

0

High-Z

IO1

High-Z

IO2

High-Z

IO3
CS#

24-bit address

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

SCLK

Dummy Clocks
IO0

4

0

4

0

4

0

4

0

4

IO1

5

1

5

1

5

1

5

1

5

IO2

6

2

6

2

6

2

6

2

6

IO3

7 3 7 3 7 3 7 3 7
Byte1 Byte2 Byte3 Byte4

7.10 Dual I/O Fast Read (BBH)
The Dual I/O Fast Read command is similar to the Dual Output Fast Read command but with the capability to input the 3byte address (A23-0) and a “Continuous Read Mode” byte 2-bit per clock by SI and SO, and each bit is latched in on therising edge of SCLK, then the memory contents are shifted out 2-bit per clock cycle from SI and SO. The first byte addressedcan be at any location. The address is automatically incremented to the next higher address after each byte of data is shiftedout.

Dual I/O Fast Read with “Continuous Read Mode”
The Dual I/O Fast Read command can further reduce command overhead through setting the “Continuous Read Mode” bits
(M7-0) after the input 3-byte address (A23-A0). If the “Continuous Read Mode” bits (M7-0) = AXH, then the next Dual I/O
Fast Read command (after CS# is raised and then lowered) does not require the BBH command code. If the “Continuous
Read Mode” bits (M7-0) ≠ AXH, the next command requires the command code, thus returning to normal operation. A“Continuous Read Mode” Reset command can be used to reset (M5-4) before issuing normal command.

http://www.elm-tech.com

21

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Figure 10. Dual I/O Fast Read Sequence Diagram (M7-0 ≠ AXH)

CS#

0

1

2

3

4

5

6

8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

6

4

2

0

6

5

3

1

7

7

SCLK
Command

BBH

IO0

7

IO1

A23-16

CS#

4

2

0

6

5

3

1

7

A15-8

4

2

0

6

5

3

1

7

A7-0

4

2

0

5

3

1

M7-0

23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

SCLK
IO0

6

4

2

0

6

4

2

0

6

4

2

0

6

4

2

0

6

IO1

7

5

3

1

7

5

3

1

7

5

3

1

7

5

3

1

7

Byte2

Byte1

Byte3

Byte4

Figure 11. Dual I/O Fast Read Sequence Diagram (M7-0 = AXH)

CS#
0

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15

IO0

6

4

2

0

6

4

2

0

6

4

2

0

6

4

2

0

IO1

7

5

3

1

7

5

3

1

7

5

3

1

7

5

3

1

SCLK

A23-16

CS#

A15-8

A7-0

M7-0

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

SCLK
IO0

6

4

2

0

6

4

2

0

6

4

2

0

6

4

2

0

6

IO1

7

5

3

1

7

5

3

1

7

5

3

1

7

5

3

1

7

Byte1

Byte2

Byte3

Byte4

7.11 Quad I/O Fast Read (EBH)The Quad I/O Fast Read command is similar to the Dual I/O Fast Read command but with the capability to input the 3-byte
address (A23-0) and a “Continuous Read Mode” byte and 4-dummy clock 4-bit per clock by IO0, IO1, IO3, IO4, and each
bit is latched in on the rising edge of SCLK, then the memory contents are shifted out 4-bit per clock cycle from IO0, IO1,
IO2, IO3. The first byte addressed can be at any location. The address is automatically incremented to the next higher
address after each byte of data is shifted out.

http://www.elm-tech.com

22

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Quad I/O Fast Read with “Continuous Read Mode”
The Quad I/O Fast Read command can further reduce command overhead through setting the “Continuous Read Mode”
bits (M7-0) after the input 3-byte address (A23-A0). If the “Continuous Read Mode” bits (M7-0) = AXH, then the next Quad
I/O Fast Read command (after CS# is raised and then lowered) does not require the EBH command code. If the “Continuous
Read Mode” bits (M7-0) ≠ AXH, the next command requires the command code, thus returning to normal operation. A“Continuous Read Mode” Reset command can be used to reset (M7-0) before issuing normal command.
Figure 12. Quad I/O Fast Read Sequence Diagram (M7-0 ≠ AXH)
CS#
8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

4

0

4

0

4

0

4

0

4

0

4

0

4

IO1

5

1

5

1

5

1

5

1

5

1

5

1

5

IO2

6

2

6

2

6

2

6

2

6

2

6

2

6

IO3

7

3

7

3

7

3

7

3

7

3

7

3

7

1

0

2

3

4

5

6

7

SCLK
Command

IO0

EBH

Dummy

A23-16 A15-8 A7-0 M7-0

Byte1 Byte2

Figure 13. Quad I/O Fast Read Sequence Diagram (M7-0 = AXH)

CS#
8

9 10 11 12 13 14 15

0

1

2

3

4

5

6

7

IO0

4

0

4

0

4

0

4

0

4

0

4

0

4

IO1

5

1

5

1

5

1

5

1

5

1

5

1

5

IO2

6

2

6

2

6

2

6

2

6

2

6

2

6

IO3

7

3

7

3

7

3

7

3

7

3

7

3

7

SCLK

A23-16 A15-8 A7-0 M7-0

Dummy

Byte1 Byte2

Quad I/O Fast Read with “8/16/32/64-Byte Wrap Around” in Standard SPI mode
The Quad I/O Fast Read command can be used to access a specific portion within a page by issuing “Set Burst with Wrap”(77H) commands prior to EBH. The “Set Burst with Wrap” (77H) command can either enable or disable the “Wrap Around”
feature for the following EBH commands. When “Wrap Around” is enabled, the data being accessed can be limited to either
an 8/16/32/64-byte section of a 256-byte page. The output data starts at the initial address specified in the command, once
it reaches the ending boundary of the 8/16/32/64-byte section, the output will wrap around the beginning boundary
automatically until CS# is pulled high to terminate the command.
The Burst with Wrap feature allows applications that use cache to quickly fetch a critical address and then fill the cacheafterwards within a fixed length (8/16/32/64-byte) of data without issuing multiple read commands. The “Set Burst with Wrap”

http://www.elm-tech.com

23

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

command allows three “Wrap Bits” W6-W4 to be set. The W4 bit is used to enable or disable the “Wrap Around” operation
while W6-W5 is used to specify the length of the wrap around section within a page.

7.12 Set Burst with Wrap (77H)
The Set Burst with Wrap command is used in conjunction with “Quad I/O Fast Read” command to access a fixed length of
8/16/32/64-byte section within a 256-byte page, in standard SPI mode.
The Set Burst with Wrap command sequence: CS# goes low  Send Set Burst with Wrap command  Send 24 dummy
bits  Send 8 bits “Wrap bits”  CS# goes high.
W6,W5

W4=0

W4=1 (default)

Wrap Around

Wrap Length

Wrap Around

Wrap Length

0, 0

Yes

8-byte

No

N/A

0, 1

Yes

16-byte

No

N/A

1, 0

Yes

32-byte

No

N/A

1, 1

Yes

64-byteNo

N/A

If the W6-W4 bits are set by the Set Burst with Wrap command, all the following “Quad I/O Fast Read” command will use
the W6-W4 setting to access the 8/16/32/64-byte section within any page. To exit the “Wrap Around” function and return tonormal read operation, another Set Burst with Wrap command should be issued to set W4=1.
Figure 14. Set Burst with Wrap Sequence DiagramCS#

8

9 10 11 12 13 14 15

x

x

x

x

x

x

4

x

IO1

x

x

x

x

x

x

5

x

IO2

x

x

x

x

x

x

6

x

IO3

x

x

x

x

x

x

x

x

0

1

2

3

4

5

6

7

SCLK
Command

IO0

77H

W6-W4

7.13 Page Program (PP) (02H)
The Page Program (PP) command is for programming the memory. A Write Enable (WREN) command must previously
have been executed to set the Write Enable Latch (WEL) bit before sending the Page Program command.
The Page Program (PP) command is entered by driving CS# Low, followed by the command code, three address bytes andat least one data byte on SI. If the 8 least significant address bits (A7-A0) are not all zero, all transmitted data that goesbeyond the end of the current page are programmed from the start address of the same page (from the address whose 8
least significant bits (A7-A0) are all zero). CS# must be driven low for the entire duration of the sequence. The Page Programcommand sequence: CS# goes low  sending Page Program command  3-byte address on SI  at least 1 byte data on
SI  CS# goes high. If more than 256 bytes are sent to the device, previously latched data are discarded and the last 256
data bytes are guaranteed to be programmed correctly within the same page. If less than 256 data bytes are sent to device,
they are correctly programmed at the requested addresses without having any effects on the other bytes of the same page.

http://www.elm-tech.com

24

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

CS# must be driven high after the eighth bit of the last data byte has been latched in; otherwise the Page Program (PP)command is not executed.
As soon as CS# is driven high, the self-timed Page Program cycle (whose duration is tPP) is initiated. While the Page
Program cycle is in progress, the Status Register may be read to check the value of the Write in Progress (WIP) bit. The
Write in Progress (WIP) bit is 1 during the self-timed Page Program cycle, and is 0 when it is completed. At some unspecified
time before the cycle is completed, the Write Enable Latch (WEL) bit is reset.
A Page Program (PP) command applied to a page which is protected by the Block Protect (BP4, BP3, BP2, BP1, and BP0)
is not executed.
Figure 15. Page Program Sequence Diagram
CS#
0

1

2

3

4

5

6

8

7

28 29 30 31 32 33 34 35 36 37 38 39

9 10

SCLK
24-bit address

4

3

2

1

2078

2079

1

0

0 7

1

MSB

0

MSB

40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55

2072

CS#

5

2077

Data Byte 1
6

2076

2

3

2075

23 22 21

02H

2073

SI

2074

Command

SCLK

Data Byte 3

Data Byte 2
SI

7

6

5

4

MSB

3

2

1

0 7

6

5

4

3

2

MSB

Data Byte 256
1

0

7

6

5

4

3

2

MSB

7.14 Quad Page Program (32H)
The Quad Page Program command is for programming the memory using four pins: IO0, IO1, IO2, and IO3. A Write Enable(WREN) command must previously have been executed to set the Write Enable Latch (WEL) bit before sending the Page
Program command. The quad Page Program command is entered by driving CS# Low, followed by the command code
(32H), three address bytes and at least one data byte on IO pins.
If more than 256 bytes are sent to the device, previously latched data are discarded and the last 256 data bytes areguaranteed to be programmed correctly within the same page. If less than 256 data bytes are sent to device, they arecorrectly programmed at the requested addresses without having any effects on the other bytes of the same page. CS#
must be driven high after the eighth bit of the last data byte has been latched in; otherwise the Quad Page Program (PP)command is not executed.
As soon as CS# is driven high, the self-timed Quad Page Program cycle (whose duration is tPP) is initiated. While the Quad
Page Program cycle is in progress, the Status Register may be read to check the value of the Write In Progress (WIP) bit.
The Write in Progress (WIP) bit is 1 during the self-timed Quad Page Program cycle, and is 0 when it is completed. At someunspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset.
A Quad Page Program command applied to a page which is protected by the Block Protect (BP4, BP3, BP2, BP1, and BP0)
is not executed.

http://www.elm-tech.com

25

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Figure 16. Quad Page Program Sequence Diagram

1

2

3

4

5

6

7

8

28 29 30 31 32 33 34 35

9 10

543

0

542

CS#

SCLK

0 4

0

4

0

Byte
256
4 0

IO1

5

1

5

1

5 1

IO2

6

2

6

2

6 2

IO3

7

3

7

3

7 3

24-bit address

Command
IO0

23 22 21

32H

2

3

Byte1 Byte2

1

MSB

7.15 Sector Erase (SE) (20H)
The Sector Erase (SE) command is for erasing the all data of the chosen sector. A Write Enable (WREN) command must
previously have been executed to set the Write Enable Latch (WEL) bit. The Sector Erase (SE) command is entered bydriving CS# low, followed by the command code, and 3-address byte on SI. Any address inside the sector is a valid address
for the Sector Erase (SE) command. CS# must be driven low for the entire duration of the sequence.
The Sector Erase command sequence: CS# goes low  sending Sector Erase command  3-byte address on SI  CS#
goes high.. CS# must be driven high after the eighth bit of the last address byte has been latched in; otherwise the Sector
Erase (SE) command is not executed. As soon as CS# is driven high, the self-timed Sector Erase cycle (whose duration istSE) is initiated. While the Sector Erase cycle is in progress, the Status Register may be read to check the value of the Writein Progress (WIP) bit. The Write in Progress (WIP) bit is 1 during the self-timed Sector Erase cycle, and is 0 when it iscompleted. At some unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset. A Sector
Erase (SE) command applied to a sector which is protected by the Block Protect (BP4, BP3, BP2, BP1, and BP0) bit is not
executed.
Figure 17. Sector Erase Sequence Diagram

CS#
0

1

2

3

4

5

6

7

8

9

29 30 31SCLK
24 Bits Address

Command

SI

20H

23 22
MSB

2

1

0

7.16 32KB Block Erase (BE) (52H)
The 32KB Block Erase (BE) command is for erasing the all data of the chosen block. A Write Enable (WREN) commandmust previously have been executed to set the Write Enable Latch (WEL) bit. The 32KB Block Erase (BE) command isentered by driving CS# low, followed by the command code, and three address bytes on SI. Any address inside the block
is a valid address for the 32KB Block Erase (BE) command. CS# must be driven low for the entire duration of the sequence.
The 32KB Block Erase command sequence: CS# goes low  sending 32KB Block Erase command  3-byte address on
SI  CS# goes high. CS# must be driven high after the eighth bit of the last address byte has been latched in; otherwise

http://www.elm-tech.com

26

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

the 32KB Block Erase (BE) command is not executed. As soon as CS# is driven high, the self-timed Block Erase cycle(whose duration is tBE1) is initiated. While the Block Erase cycle is in progress, the Status Register may be read to checkthe value of the Write in Progress (WIP) bit. The Write in Progress (WIP) bit is 1 during the self-timed Block Erase cycle,
and is 0 when it is completed. At some unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit isreset. A 32KB Block Erase (BE) command applied to a block which is protected by the Block Protect (BP4, BP3, BP2, BP1,
and BP0) bits is not executed.
Figure 18. 32KB Block Erase Sequence Diagram

CS#
0

1

2

3

4

5

6

7

8

9

29 30 31SCLK
24 Bits Address

Command

SI

23 22
MSB

52H

2

0

1

7.17 64KB Block Erase (BE) (D8H)
The 64KB Block Erase (BE) command is for erasing the all data of the chosen block. A Write Enable (WREN) commandmust previously have been executed to set the Write Enable Latch (WEL) bit. The 64KB Block Erase (BE) command isentered by driving CS# low, followed by the command code, and three address bytes on SI. Any address inside the block
is a valid address for the 64KB Block Erase (BE) command. CS# must be driven low for the entire duration of the sequence.
The 64KB Block Erase command sequence: CS# goes low  sending 64KB Block Erase command  3-byte address on
SI  CS# goes high. CS# must be driven high after the eighth bit of the last address byte has been latched in; otherwise
the 64KB Block Erase (BE) command is not executed. As soon as CS# is driven high, the self-timed Block Erase cycle(whose duration is tBE2) is initiated. While the Block Erase cycle is in progress, the Status Register may be read to checkthe value of the Write in Progress (WIP) bit. The Write in Progress (WIP) bit is 1 during the self-timed Block Erase cycle,
and is 0 when it is completed. At some unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit isreset. A 64KB Block Erase (BE) command applied to a block which is protected by the Block Protect (BP4, BP3, BP2, BP1,
and BP0) bits is not executed.
Figure 19. 64KB Block Erase Sequence Diagram

CS#
0

1

2

3

4

5

6

7

8

9

29 30 31SCLK
24 Bits Address

Command

SI

D8H

23 22
MSB

2

1

0

7.18 Chip Erase (CE) (60/C7H)
The Chip Erase (CE) command is for erasing the all data of the chip. A Write Enable (WREN) command must previously
have been executed to set the Write Enable Latch (WEL) bit .The Chip Erase (CE) command is entered by driving CS#
Low, followed by the command code on Serial Data Input (SI). CS# must be driven Low for the entire duration of thesequence.
The Chip Erase command sequence: CS# goes low  sending Chip Erase command  CS# goes high. CS# must be
driven high after the eighth bit of the command code has been latched in; otherwise the Chip Erase command is not executed.

http://www.elm-tech.com

27

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

As soon as CS# is driven high, the self-timed Chip Erase cycle (whose duration is t CE) is initiated. While the Chip Erase
cycle is in progress, the Status Register may be read to check the value of the Write in Progress (WIP) bit. The Write inProgress (WIP) bit is 1 during the self-timed Chip Erase cycle, and is 0 when it is completed. At some unspecified time
before the cycle is completed, the Write Enable Latch (WEL) bit is reset. The Chip Erase (CE) command is executed, if theBlock Protect (BP2, BP1, and BP0) bits are 0 and CMP=0 or the Block Protect (BP2, BP1, and BP0) bits are 1 and CMP=1.
Figure 20. Chip Erase Sequence Diagram
CS#

0

1

2

3

4

5

6

7

SCLK

Command
60H or C7H

SI

7.19 Read Manufacture ID/ Device ID (REMS) (90H)
The Read Manufacturer/Device ID command is an alternative to the Release from Power-Down / Device ID command thatprovides both the JEDEC assigned Manufacturer ID and the specific Device ID.
The command is initiated by driving the CS# pin low and shifting the command code “90H” followed by a 24-bit address(A23-A0) of 000000H. After which, the Manufacturer ID and the Device ID are shifted out on the falling edge of SCLK withmost significant bit (MSB) first.
Figure 21. Read Manufacture ID/ Device ID Sequence Diagram

CS#
0

1

2

3

4

5

6

7

8

9 10

28 29 30 31

SCLKCommandSI

90H

3

23 22 212

1

0

High-ZSO
CS#

24-bit address

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

SCLK
SI
SO

7

Device ID

Manufacturer ID
6 5 4 3 2 1

0

MSB

7

6

5

4

3

2

1

0

MSB

7.20 Read Identification (RDID) (9FH)
The Read Identification (RDID) command allows the 8-bit manufacturer identification to be read, followed by two bytes ofdevice identification. The device identification indicates the memory type in the first byte, and the memory capacity of thedevice in the second byte. The Read Identification (RDID) command while an Erase or Program cycle is in progress, is notdecoded, and has no effect on the cycle that is in progress. The Read Identification (RDID) command should not be issued
while the device is in Deep Power-Down Mode.
The device is first selected by driving CS# low. Then, the 8-bit command code for the command is shifted in. This is followed

http://www.elm-tech.com

28

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

by the 24-bit device identification, stored in the memory. Each bit is shifted out on the falling edge of Serial Clock. The Read
Identification (RDID) command is terminated by driving CS# high at any time during data output. When CS# is driven high,the device is in the Standby Mode. Once in the Standby Mode, the device waits to be selected, so that it can receive, decodeand execute commands.
Figure 22. Read Identification ID Sequence Diagram

CS#
0

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15

7

6

SCLK

9FH

SI
SO

MSB

CS#

Manufacturer ID
5 4 3 2 10

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

SCLK
SIMemory Type ID15-ID8
7 6 5 4 3 2 1 0

SO

Capacity ID7-ID0
6 5 4 3 2 1

7

0

MSB

MSB

7.21 Read Unique ID (4BH)
The Read Unique ID command accesses a factory-set read-only 128bit number that is unique to each device. The Unique
ID can be used in conjunction with user software methods to help prevent copying or cloning of a system.
The Read Unique ID command sequence: CS# goes low  sending Read Unique ID command  3-Byte Address(000000H) Dummy Byte128bit Unique ID Out CS# goes high.
Figure 23. Read Unique ID Sequence Diagram
CS#
0

SCLK

1

2

3

4

5

6

9 10

28 29 30 31

24-bit address(000000H)
23 22 21
3 2

Command

SI

8

7

4BH

1

0

High-ZSOCS#
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

SCLK
SI
SO

http://www.elm-tech.com

Dummy Byte
7

6

5

4

3

2

1

0
7 6
MSB

29

Rev.1.0

Data Out1
5 4 3 2

10Data Out2
7 6 5
MSB

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

7.22 Erase Security Registers (44H)
The GD25B16E provides 2x1024-Byte Security Registers which can be erased and programmed individually. These
registers may be used by the system manufacturers to store security and other important information separately from themain memory array.
The Erase Security Registers command is similar to Sector/Block Erase command. A Write Enable (WREN) command must
previously have been executed to set the Write Enable Latch (WEL) bit.
The Erase Security Registers command sequence: CS# goes low  sending Erase Security Registers command  3-byte
address on SI  CS# goes high. The command sequence is shown below. CS# must be driven high after the eighth bit of
the last address byte has been latched in; otherwise the Erase Security Registers command is not executed. As soon asCS# is driven high, the self-timed Erase Security Registers cycle (whose duration is t SE) is initiated. While the Erase Security
Registers cycle is in progress, the Status Register may be read to check the value of the Write in Progress (WIP) bit. The
Write in Progress (WIP) bit is 1 during the self-timed Erase Security Registers cycle, and is 0 when it is completed. At someunspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset. The Security Registers Lock Bit(LB0, LB1) in the Status Register can be used to OTP protect the security registers. Once the LB bit is set to 1, the Security
Registers will be permanently locked; the Erase Security Registers command will be ignored.
Address

A23-16

A15-12

A11-10

A9-0

Security Register #0

00H

0000b

00b

Don't care

Security Register #1

00H

0001b

00b

Don't care

Figure 24. Erase Security Registers command Sequence Diagram

CS#

0

1

2

3

4

5

6

7

8

9

29 30 31

SCLK
CommandSI

44H

24 Bits Address

23 22
MSB

2

1

0

7.23 Program Security Registers (42H)
The Program Security Registers command is similar to the Page Program command. Each security register contains four
pages content. A Write Enable (WREN) command must previously have been executed to set the Write Enable Latch (WEL)
bit before sending the Program Security Registers command. The Program Security Registers command is entered bydriving CS# Low, followed by the command code (42H), three address bytes and at least one data byte on SI. As soon asCS# is driven high, the self-timed Program Security Registers cycle (whose duration is t PP) is initiated. While the Program
Security Registers cycle is in progress, the Status Register may be read to check the value of the Write in Progress (WIP)
bit. The Write in Progress (WIP) bit is 1 during the self-timed Program Security Registers cycle, and is 0 when it is completed.
At some unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset.
If the Security Registers Lock Bit (LB0, LB1) is set to 1, the Security Registers will be permanently locked. Program Security
Registers command will be ignored.
Address

A23-16

A15-12

A11-10

A9-0

Security Register #0

00H

0000b

00b

Byte Address

Security Register #1

00H

0001b

00b

Byte Address

http://www.elm-tech.com

30

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Figure 25. Program Security Registers command Sequence Diagram
CS#
1

0

2

3

4

5

6

8

7

28 29 30 31 32 33 34 35 36 37 38 39

9 10

SCLK
24-bit address

4

3

2

1

2078

2079

1

0

0 7

1

MSB

0

40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55

2073

MSB
2072

CS#

5

2077

Data Byte 1
6

2076

2

3

2075

23 22 21

42H

SI

2074

Command

SCLK

Data Byte 3

Data Byte 2
SI

7

6

4

5

3

0 7

1

2

MSB

1

2

3

4

5

6

Data Byte 256
7

0

MSB

2

3

4

5

6

MSB

7.24 Read Security Registers (48H)
The Read Security Registers command is similar to Fast Read command. The command is followed by a 3-byte address(A23-A0) and a dummy byte, and each bit is latched-in on the rising edge of SCLK. Then the memory content, at that
address, is shifted out on SO, and each bit is shifted out, at a Max frequency f C, on the falling edge of SCLK. The first byte
addressed can be at any location. The address is automatically incremented to the next higher address after each byte ofdata is shifted out. Once the A9-0 address reaches the last byte of the register (Byte 3FFH), it will reset to 000H, thecommand is completed by driving CS# high.
Address

A23-16

A15-12

A11-10

A9-0

Security Register #0

00H

0000b

00b

Byte Address

Security Register #1

00H

0001b

00b

Byte Address

Figure 26. Read Security Registers command Sequence Diagram

CS#
0

SCLK

1

2

3

4

5

6

8

7

28 29 30 31

24-bit address

CommandSI

9 10

23 22 21

48H

2

3

1

0

High-ZSOCS#

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
SCLK
Dummy Byte
SI
SO

http://www.elm-tech.com

7

6

5

4

3

2

1

0
7 6
MSB

31

Rev.1.0

Data Out1
5 4 3 2

10Data Out2
7 6 5
MSB

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

7.25 Enable Reset (66H) and Reset (99H)
If the Reset command is accepted, any on-going internal operation will be terminated and the device will return to its default
power-on state and lose all the current volatile settings, such as Volatile Status Register bits, Write Enable Latch status(WEL), Program/Erase Suspend status, Read Parameter setting (P7-P0), Deep Power Down Mode, Continuous Read Modebit setting (M7-M0) and Wrap Bit Setting (W6-W4).
The “Enable Reset (66H)” and “Reset (99H)” command sequence as follow: CS# goes low  Sending Enable Resetcommand  CS# goes high  CS# goes low  Sending Reset command  CS# goes high. Once the Reset command isaccepted by the device, the device will take approximately t RST / tRST_E to reset. During this period, no command will be
accepted. Data corruption may happen if there is an on-going or suspended internal Erase or Program operation when
Reset command sequence is accepted by the device. It is recommended to check the WIP bit and the SUS bit in Status
Register before issuing the Reset command sequence.
Figure 27. Enable Reset and Reset command Sequence Diagram

CS#

0

1

2

3

4

5

6

7

0

1

2

3

4

5

6

7

SCLK

SI

CommandCommand

66H

99H

High-ZSO

7.26 Program/Erase Suspend (PES) (75H)
The Program/Erase Suspend command “75H”, allows the system to interrupt a page program or sector/block erase
operation and then read data from any other sector or block. The Write Status Register command (01H) and Erase/Program
Security Registers command (44H, 42H) and Erase commands (20H, 52H, D8H, C7H, 60H) and Page Program command(02H, 32H) are not allowed during Program suspend. The Write Status Register command (01H) and Erase Security
Registers command (44H) and Erase commands (20H, 52H, D8H, C7H, 60H) are not allowed during Erase suspend.
Program/Erase Suspend is valid only during the page program or sector/block erase operation. A maximum of time of “tsus”(See AC Characteristics) is required to suspend the program/erase operation.
The Program/Erase Suspend command will be accepted by the device only if the SUS bit in the Status Register equal to 0
and WIP bit equal to 1 while a Page Program or a Sector or Block Erase operation is on-going. If the SUS bit equal to 1 or
WIP bit equal to 0, the Suspend command will be ignored by the device. The WIP bit will be cleared from 1 to 0 within “tsus”
and the SUS bit will be set from 0 to 1 immediately after Program/Erase Suspend. A power-off during the suspend period
will reset the device and release the suspend state..
Figure 28. Program/Erase Suspend Sequence Diagram
CS#

0

1

2

3

4

5

6

7

tSUS

SCLK

Command
SI
SO

75H
High-Z
Accept read command

http://www.elm-tech.com

32

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

7.27 Program/Erase Resume (PER) (7AH)
The Program/Erase Resume command must be written to resume the program or sector/block erase operation after a
Program/Erase Suspend command. The Program/Erase Resume command will be accepted by the device only if the SUS
bit equal to 1 and the WIP bit equal to 0. After issued the SUS bit in the status register will be cleared from 1 to 0 immediately,
the WIP bit will be set from 0 to 1 within 200ns and the Sector or Block will complete the erase operation or the page willcomplete the program operation. The Program/Erase Resume command will be ignored unless a Program/Erase Suspend
is active.
Figure 29. Program/Erase Resume Sequence Diagram

CS#

0

1

2

3

4

5

6

7

SCLK
CommandSI

7AH
Resume Erase/Program

7.28 Deep Power-Down (DP) (B9H)
Executing the Deep Power-Down (DP) command is the only way to put the device in the lowest consumption mode (theDeep Power-Down Mode). It can also be used as an extra software protection mechanism, while the device is not in activeuse, since in this mode, the device ignores all Write, Program and Erase commands. Driving CS# high deselects the device,
and puts the device in the Standby Mode (if there is no internal cycle currently in progress). But this mode is not the DeepPower-Down Mode. The Deep Power-Down Mode can only be entered by executing the Deep Power-Down (DP) command.
Once the device has entered the Deep Power-Down Mode, all commands are ignored except the Release from DeepPower-Down and Read Device ID (RDI) command or software reset command. The Release from Deep Power-Down andRead Device ID (RDI) command releases the device from Deep Power-Down mode, also allows the Device ID of the device
to be output on SO.
The Deep Power-Down Mode automatically stops at Power-Down, and the device always in the Standby Mode after PowerUp.
The Deep Power-Down command sequence: CS# goes low  sending Deep Power-Down command  CS# goes high.
CS# must be driven high after the eighth bit of the command code has been latched in; otherwise the Deep Power-Down(DP) command is not executed. As soon as CS# is driven high, it requires a delay of t DP before the supply current is reduced
to ICC2 and the Deep Power-Down Mode is entered. Any Deep Power-Down (DP) command, while an Erase, Program or
Write cycle is in progress, is rejected without having any effects on the cycle that is in progress.
Figure 30. Deep Power-Down Sequence Diagram

CS#
0

1

2

3

4

5

6

7

tDP

SCLK
CommandSI

http://www.elm-tech.com

Deep Power-down mode

B9H

33

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

7.29 Release from Deep Power-Down and Read Device ID (RDI) (ABH)
The Release from Power-Down and Read Device ID command is a multi-purpose command. It can be used to release thedevice from the Power-Down state or obtain the devices electronic identification (ID) number.
To release the device from the Power-Down state, the command is issued by driving the CS# pin low, shifting the
instruction code “ABH” and driving CS# high. Release from Power-Down will take the time duration of tRES1 (See AC
Characteristics) before the device will resume normal operation and other command are accepted. The CS# pin mustremain high during the tRES1 time duration.
When used only to obtain the Device ID while not in the Power-Down state, the command is initiated by driving the CS#
pin low and shifting the instruction code “ABH” followed by 3-dummy byte. The Device ID bits are then shifted out on thefalling edge of SCLK with most significant bit (MSB) first. The Device ID value is listed in Manufacturer and Device
Identification table. The Device ID can be read continuously. The command is completed by driving CS# high.
When used to release the device from the Power-Down state and obtain the Device ID, the command is the same aspreviously described, except that after CS# is driven high it must remain high for a time duration of tRES2 (See AC
Characteristics). After this time duration the device will resume normal operation and other command will be accepted. If
the Release from Power-Down / Device ID command is issued while an Erase, Program or Write cycle is in process (whenWIP equals 1) the command is ignored and will not have any effects on the current cycle.
Figure 31. Release Power-Down Sequence Diagram

CS#

0

1

2

3

4

5

6

t RES17

SCLK

CommandSI

ABH
Deep Power-down modeStand-by mode

Figure 32. Release Power-Down/Read Device ID Sequence Diagram

CS#
0

1

2

3

4

5

6

7

8

9

29 30 31 32 33 34 35 36 37 38

SCLKCommand

SI

SO

ABH

High-Zt RES23 Dummy Bytes

23 22

2

1

0

MSB

MSB

7

6

Device ID
5 4 3 2

10

Deep Power-down Mode Stand-byMode

7.30 Read Serial Flash Discoverable Parameter (5AH)
The Serial Flash Discoverable Parameter (SFDP) standard provides a consistent method of describing the functional andfeature capabilities of serial flash devices in a standard set of internal parameter tables. These parameter tables can beinterrogated by host system software to enable adjustments needed to accommodate divergent features from multiple
vendors. The concept is similar to the one found in the Introduction of JEDEC Standard, JESD68 on CFI. SFDP is a standard
of JEDEC Standard No.216B.

http://www.elm-tech.com

34

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Figure 33. Read Serial Flash Discoverable Parameter command Sequence Diagram

CS#

0

SCLK

1

2

3

4

5

6

7

8

CommandSI

9 10

28 29 30 31

24-bit address

5AH

3

23 22 212

1

0

High-ZSOCS#

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
SCLK
SI
SO

Dummy Byte

7

6

5

4

3

2

1

0

7 6
MSB

Data Out1
5 4 3 2

10Data Out2
7 6 5
MSB

Table 7. Signature and Parameter Identification Data Values (Please contact GigaDevice for Details)

http://www.elm-tech.com

35

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash8

GD25B16E

ELECTRICAL CHARACTERISTICS

8.1 Power-On Timing
Figure 34. Power-On Timing Sequence Diagram
Vcc(max)

Chip Selection is not allowed
Vcc(min)tVSL

Device is fully
accessible

VWI

Time

Table 8. Power-Up Timing and Write Inhibit Threshold
SymbolParameter

Min.

tVSL

VCC (min.) to device operation

1

VWI

Write Inhibit Voltage

1.5

Max.

Unit
ms

2.5

V

8.2 Initial Delivery StateThe device is delivered with the memory array erased: all bits are set to 1(each byte contains FFH). The Status Registercontains 00H, except that QE bit (S9) is set to 1.

8.3

Absolute Maximum Ratings
Parameter

Value

Unit

Ambient Operating Temperature-40 to 85℃

Storage Temperature-65 to 150℃

Transient Input/Output Voltage (note: overshoot)-2.0 to VCC+2.0

V

Applied Input/Output Voltage-0.6 to VCC+0.4

V-0.6 to 4.2

V

VCC

http://www.elm-tech.com

36

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Figure 35. Input Test Waveform and Measurement Level
Maximum Negative Overshoot Waveform
20ns

Maximum Positive Overshoot Waveform

20ns

20ns

Vss
Vcc + 2.0V

Vss-2.0V
Vcc

20ns

20ns

20ns

8.4 Capacitance Measurement Conditions
SymbolParameter

Min.

Typ.

Max.

Unit

Conditions

CIN

Input Capacitance6

pF

VIN=0V

COUT

Output Capacitance8pF

VOUT=0V

CL

Load Capacitance

30

pF

Input Rise And Fall time

5ns

Input Pulse Voltage

0.1VCC to 0.8VCC

V

Input Timing Reference Voltage

0.2VCC to 0.7VCC

V

Output Timing Reference Voltage

0.5VCCV

Figure 36. Absolute Maximum Ratings Diagram

0.8VCC

Input timing reference level

0.1VCC

0.7VCC
0.2VCC

Output timing reference level
AC Measurement Level

Note: Input pulse rise and fall time are<5ns

http://www.elm-tech.com

37

Rev.1.0

0.5VCCUniform Sector
Dual and Quad Serial Flash

GD25B16E

8.5 DC Characteristics(T=-40℃~85℃, VCC=2.7~3.6V)
SymbolParameter

Test Condition

Min.

Typ.

Max.

Unit.

ILI

Input Leakage Current

±2

μA

ILO

Output Leakage Current

±2

μA

ICC1

Standby Current

11

40

μA

ICC2

Deep Power-Down Current

1

8

μA

12

20

mA

8

13

mA

CS#=VCC,
VIN=VCC or VSS
CS#=VCC,
VIN=VCC or VSS
CLK=0.1VCC / 0.9VCC
at 133MHz,

ICC3Operating Current (Read)

Q=Open(*1,*2,*4 I/O)
CLK=0.1VCC / 0.9VCC
at 80MHz,
Q=Open(*1,*2,*4 I/O)

ICC4Operating Current (PP)

CS#=VCC

25

mA

ICC5

Operating Current (WRSR)

CS#=VCC

25

mA

ICC6

Operating Current (SE)

CS#=VCC

25

mA

ICC7

Operating Current (BE)

CS#=VCC

25

mA

ICC8

Operating Current (CE)

CS#=VCC

25

mA

VIL

Input Low Voltage-0.5

0.2VCCV

VIH

Input High Voltage

0.7VCCVOL

Output Low Voltage

IOL = 100μA

VOH

Output High Voltage

IOH = -100μA

0.2
VCC-0.2

Note:
1. Typical value at T = 25℃, VCC = 3.3V.
2. Value guaranteed by design and/or characterization, not 100% tested in production.

http://www.elm-tech.com

V38

Rev.1.0

V
V

Uniform Sector
Dual and Quad Serial Flash
8.6

GD25B16E

AC Characteristics(T=-40℃~85℃, VCC=2.7~3.6V, CL=30pf)
SymbolFC1
FC2
fC

Parameter

Min.

Typ.

Serial Clock Frequency For: all commands except
Read (03H), DC=1 on 3.0-3.6V power supply
Serial Clock Frequency For: all commands except
Read (03H), DC=1 on 2.7-3.0V power supply
Serial Clock Frequency For: all commands except
Read (03H), DC=0

Max.

Unit.

133

MHz

104

MHz

104

MHz

80

MHz

fR

Serial Clock Frequency For: Read (03H)tCLH

Serial Clock High Time

tCLL

Serial Clock Low Time

tCLCH

Serial Clock Rise Time (Slew Rate)

0.2

V/ns

tCHCL

Serial Clock Fall Time (Slew Rate)

0.2

V/ns

tSLCH

CS# Active Setup Time

5

ns

tCHSH

CS# Active Hold Time

5

ns

tSHCH

CS# Not Active Setup Time

5

ns

tCHSL

CS# Not Active Hold Time

5

ns

tSHSL

CS# High Time (Read/Write)

20

ns

tSHQZ

Output Disable Time

tCLQX

Output Hold Time

1.2

ns

tDVCH

Data In Setup Time

2

ns

tCHDX

Data In Hold Time

2

ns

tCLQV

Clock Low To Output Valid

7

ns

tDP

CS# High To Deep Power-Down Mode

3

μs

20

μs

20

μs

20

μs

tRES1
tRES2

45%
45%

6

CS# High To Standby Mode Without Electronic
Signature Read
CS# High To Standby Mode With Electronic Signature
Read
CS# High To Next Command After SuspendtRS

Latency Between Resume And Next Suspend

tRST_Ens(1/Fc)

tSUS

tRST

ns

(1/Fc)

ns

μs

100

CS# High To Next Command After Reset (Except
From Erase)CS# High To Next Command After Reset (FromErase)

30

μs

12

ms

tW

Write Status Register Cycle Time

5

30

ms

tBP1

Byte Program Time (First Byte)

40

70

μs

tBP2

Additional Byte Program Time (After First Byte)

2.5

12

μs

tPP

Page Programming Time

0.4

2

ms

tSE

Sector Erase Time

45

300

ms

http://www.elm-tech.com

39

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

tBE1

Block Erase Time (32K Bytes)

0.15

1.2

s

tBE2

Block Erase Time (64K Bytes)

0.25

1.6

s

tCE

Chip Erase Time (GD25B16E)

6

20

s

Note:
1. Typical value at T = 25℃.
2. Value guaranteed by design and/or characterization, not 100% tested in production.

Figure 37. Input Timing

tSHSL

CS#

tCHSL
SCLK

tSLCH

tDVCH

tCHSH

MSB

SO

High-Z

tCHCL

tCLCH

tCHDX

SI

tSHCH

LSB

Figure 38. Output Timing

CS#

tCLH

SCLK
tCLQV

tCLQV

tCLQX

tCLL

tCLQX

LSB

SO
SI
Least significant address bit (LIB) in

Figure 39. Resume to Suspend Timing DiagramCS#

http://www.elm-tech.com

ResumeCommandtRS

40

Rev.1.0

SuspendCommandtSHQZ

Uniform Sector
Dual and Quad Serial Flash9

GD25B16E

ORDERING INFORMATIONGD XX XX XX X X X X X
Packing
T or no mark: Tube
Y: Tray
R: Tape and Reel
Green Code
G: Pb Free + Halogen Free Green Package
Temperature Range
I: Industrial (-40℃ to +85℃)
J: Industrial (-40℃ to +105℃)*
E: Industrial (-40℃ to +125℃)*
F: Industrial+ (-40℃ to +85℃)**
Package Type
T: SOP8 150mil
S: SOP8 208mil
E: USON8 (3x2mm, 0.45mm thickness)
N: USON8 (3x4mm)
Q: USON8 (4x4mm, 0.45mm thickness)
W: WSON8 (6x5mm)
Generation
E: E Version
Density
16: 16M bit
Series
B: 3V, 4KB Uniform Sector, default x4I/O
Product Family
25: SPI NOR Flash*This datasheet applies to temperature range I: Industrial (-40℃ to +85℃) and F: Industrial+ (-40℃ to +85℃) only.
Please contact GigaDevice sales for extended temperature industrial products.
**F grade has implemented additional test flows to ensure higher product quality than I grade.

http://www.elm-tech.com

41

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash
9.1

GD25B16E

Valid Part Numbers

Please contact GigaDevice regional sales for the latest product selection and available form factors.
Temperature Range I: Industrial (-40℃ to +85℃)

Product Number

Density

Package Type

GD25B16ETIG
GD25B16ESIG
GD25B16EEIG
GD25B16ENIG
GD25B16EQIG
GD25B16EWIG

16Mbit
16Mbit
16Mbit
16Mbit
16Mbit
16Mbit

SOP8 150mil
SOP8 208mil
USON8 (3x2mm, 0.45mm thickness)
USON8 (3x4mm)
USON8 (4x4mm, 0.45mm thickness)
WSON8 (6x5mm)

Temperature Range F: Industrial+ (-40℃ to +85℃)

Product Number

Density

Package Type

GD25B16ETFG
GD25B16ESFG
GD25B16EEFG
GD25B16ENFG
GD25B16EQFG
GD25B16EWFG

16Mbit
16Mbit
16Mbit
16Mbit
16Mbit
16Mbit

SOP8 150mil
SOP8 208mil
USON8 (3x2mm, 0.45mm thickness)
USON8 (3x4mm)
USON8 (4x4mm, 0.45mm thickness)
WSON8 (6x5mm)

http://www.elm-tech.com

42

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

10 PACKAGE INFORMATION
10.1 Package SOP8 150MIL
D
8

5

E

E1

h
L1

L
1

4

“A”

θ

b
A2

A

c

Detail “A”

A1

e

b

Base Metal

Dimensions
Symbol

A

A1

A2

b

c

D

E

E1

Min

-

0.10

1.25

0.31

0.10

4.80

5.80

3.80

Nom

-

0.15

1.45

0.41

0.20

4.90

6.00

3.90

Max

1.75

0.25

1.55

0.51

0.25

5.00

6.20

4.00

Unit
mm

Note:
1. Both the package length and width do not include the mold flash.
2. Seating plane: Max. 0.1mm.

http://www.elm-tech.com

43

Rev.1.0

e

L

L1

0.40
1.27

0.90

1.04

h

θ

0.25

0°

-

-

0.50

8°

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

10.2 Package SOP8 208MIL
D
8

5

E

E1

L
1

4

“A”

L1

θ

b
A2

A

c

Detail “A”

A1

e

b

Base Metal

Dimensions
Symbol

A

A1

A2

b

c

D

E

E1

Min

-

0.05

1.70

0.31

0.15

5.13

7.70

5.18

Nom

-

0.15

1.80

0.41

0.20

5.23

7.90

5.28

Max

2.16

0.25

1.90

0.51

0.25

5.33

8.10

5.38

Unit
mm

Note:
1. Both the package length and width do not include the mold flash.
2. Seating plane: Max. 0.1mm.

http://www.elm-tech.com

44

Rev.1.0

e

L

L1

0.50
1.27

0.85

θ
0°

1.31

8°

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

10.3 Package USON8 (3x2mm, 0.45mm thickness)c

D

PIN 1#E

A1
A

Top View

Side View

D1

L1

4

5

E1

e

b

1

8

L

Bottom View

Dimensions
Symbol

A

A1

c

b

D

D1

E

E1

Min

0.40

0.00

0.10

0.20

2.90

0.15

1.90

1.55

Nom

0.45

0.02

0.15

0.25

3.00

0.20

2.00

1.60

Max

0.50

0.05

0.20

0.30

3.10

0.25

2.10

1.65

Unit
mm

e

L

L1

0.30
0.50

0.35

0.10

0.40

Note:
1. Both the package length and width do not include the mold flash.
2. The exposed metal pad area on the bottom of the package is floating.
3. Coplanarity ≤0.08mm. Package edge tolerance≤0.10mm.
4. The lead shape may be of little difference according to different package factories. These lead shapes
are compatible with each other.

http://www.elm-tech.com

45

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

10.4 Package USON8 (3x4mm)c

D
PIN 1#

E

A1

A
Side View

Top View

D1
5

4

e1

e

e1

b

E1

or

E1

1

8

Bottom View

Note(4)L

Dimensions
Symbol

A

A1

c

b

D

D1

E

E1

Min

0.50

0.00

0.10

0.25

2.90

0.10

3.90

0.70

Nom

0.55

0.02

0.15

0.30

3.00

0.20

4.00

0.80

Max

0.60

0.05

0.20

0.35

3.10

0.30

4.10

0.90

Unit
mm

e

e1

0.80

0.80

BSC

BSC

L
0.50
0.60
0.70

Note:
1. Both the package length and width do not include the mold flash.
2. The exposed metal pad area on the bottom of the package is floating.
3. Coplanarity ≤0.08mm. Package edge tolerance≤0.10mm.
4. The lead shape may be of little difference according to different package factories. These lead shapes
are compatible with each other.

http://www.elm-tech.com

46

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

10.5 Package USON8 (4x4mm, 0.45mm thickness)c

D

PIN 1#

E

A1

A
Side View

Top View

D1

4

5

e

E1

b

1

8

L

Bottom View
Dimensions
Symbol

A

A1

c

b

D

D1

E

E1

Min

0.40

0.00

0.10

0.25

3.90

2.20

3.90

2.90

Nom

0.45

0.02

0.15

0.30

4.00

2.30

4.00

3.00

Max

0.50

0.05

0.20

0.35

4.10

2.40

4.10

3.10

Unit
mm

e

L
0.35

0.80

0.40
0.45

Note:
1. Both the package length and width do not include the mold flash.
2. The exposed metal pad area on the bottom of the package is floating.
3. Coplanarity ≤0.08mm. Package edge tolerance≤0.10mm.
4. The lead shape may be of little difference according to different package factories. These lead shapes
are compatible with each other

http://www.elm-tech.com

47

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

10.6 Package WSON8 (6x5mm)c

D
PIN 1#

E

A1
A
Side View

Top View

D2
4

5

e

E2

b

1

8

L

Bottom View
Dimensions
Symbol

A

A1

c

b

D

D2

E

E2

Min

0.70

0.00

0.180

0.35

5.90

3.30

4.90

3.90

Nom

0.75

0.02

0.203

0.40

6.00

3.40

5.00

4.00

Max

0.80

0.05

0.250

0.50

6.10

3.50

5.10

4.10

Unit
mm

e

L
0.50

1.27

0.60
0.75

Note:
1. Both the package length and width do not include the mold flash.
2. The exposed metal pad area on the bottom of the package is floating.
3. Coplanarity ≤0.08mm. Package edge tolerance≤0.10mm.
4. The lead shape may be of little difference according to different package lead frames. These leadshapes are compatible with each other.

http://www.elm-tech.com

48

Rev.1.0

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

11 REVISION HISTORY
Version No
1.0

Description
Initial release

http://www.elm-tech.com

49

Rev.1.0

Page

Date

All

2019-10-9

Uniform Sector
Dual and Quad Serial Flash

GD25B16E

Important NoticeThis document is the property of GigaDevice Semiconductor (Beijing) Inc. and its subsidiaries (the "Company"). This
document, including any product of the Company described in this document (the “Product”), is owned by the Company
under the intellectual property laws and treaties of the People’s Republic of China and other jurisdictions worldwide. The
Company reserves all rights under such laws and treaties and does not grant any license under its patents, copyrights,
trademarks, or other intellectual property rights. The names and brands of third party referred thereto (if any) are the propertyof their respective owner and referred to for identification purposes only.
The Company makes no warranty of any kind, express or implied, with regard to this document or any Product,
including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The Company
does not assume any liability arising out of the application or use of any Product described in this document. Any information
provided in this document is provided only for reference purposes. It is the responsibility of the user of this document toproperly design, program, and test the functionality and safety of any application made of this information and any resulting
product. Except for customized products which has been expressly identified in the applicable agreement, the Products aredesigned, developed, and/or manufactured for ordinary business, industrial, personal, and/or household applications only.
The Products are not designed, intended, or authorized for use as components in systems designed or intended for theoperation of weapons, weapons systems, nuclear installations, atomic energy control instruments, combustion control
instruments, airplane or spaceship instruments, traffic signal instruments, life-support devices or systems, other medical
devices or systems (including resuscitation equipment and surgical implants), pollution control or hazardous substancesmanagement, or other uses where the failure of the device or Product could cause personal injury, death, property or
environmental damage ("Unintended Uses"). Customers shall take any and all actions to ensure using and selling the
Products in accordance with the applicable laws and regulations. The Company is not liable, in whole or in part, andcustomers shall and hereby do release the Company as well as it’s suppliers and/or distributors from any claim, damage,or other liability arising from or related to all Unintended Uses of the Products. Customers shall indemnify and hold theCompany as well as it’s suppliers and/or distributors harmless from and against all claims, costs, damages, and otherliabilities, including claims for personal injury or death, arising from or related to any Unintended Uses of the Products.
Customers shall discard the device according to the local environmental law.
Information in this document is provided solely in connection with the Products. The Company reserves theright to make changes, corrections, modifications or improvements to this document and the Products andservices described herein at any time, without notice.

http://www.elm-tech.com

50

Rev.1.0