S225 SATA SSD
2.5” Solid State SATA Drives
Engineering Specification
Document Number L500285
Revision: FNo part of this document may be reproduced, copied, recorded, stored in a retrieval system, or transmitted in any
form without the written permission of Delkin Devices. This document is for informational use only and is subject tochange without prior notice. Delkin Devices assumes no responsibility for any errors that may appear in thisdocument.
© 2014 | Delkin Devices Inc.

S225 2.5” SATA SSD

L500285 Rev. F

Table of Contents
1.0

General Specifications .............................................................................................................. 3

1.1
1.2

2.0

Functional Block Diagram ............................................................................................................................................. 4
Part Numbers ............................................................................................................................................................... 5

Mechanical Specifications ......................................................................................................... 6

2.1

3.0

Dimensions ................................................................................................................................................................... 6

Product Specifications ............................................................................................................... 7

3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8

4.0

System Interface and Configuration ............................................................................................................................. 7
System Performance .................................................................................................................................................... 7
I/O Performance ........................................................................................................................................................... 7
Supply Voltage ............................................................................................................................................................. 7
System Power Consumption ........................................................................................................................................ 7
System Reliability ......................................................................................................................................................... 8
Environmental Specifications ........................................................................................................................................ 9
Capacity Information* ................................................................................................................................................... 9Electrical Interface Specification .............................................................................................. 10

4.1
Serial ATA Interface connector ................................................................................................................................... 10
4.2
Pin Assignments ......................................................................................................................................................... 10
4.3
Absolute Maximum Ratings 3.3 Volt ........................................................................................................................... 11
4.4
Absolute Maximum Ratings 5 Volt .............................................................................................................................. 11
4.5
Electrical Characteristics ............................................................................................................................................ 11
4.5.1
In 3.3 Volt Circuit................................................................................................................................................ 11
4.5.2
In 5 Volt Circuit................................................................................................................................................... 11

5.0

Command Descriptions ........................................................................................................... 12

5.1
5.2

6.0

Supported ATA Commands ........................................................................................................................................ 12
Identify Device Parameters......................................................................................................................................... 14

SMART Feature Set ................................................................................................................ 17

6.1
6.2
6.3

Sub Command Sets.................................................................................................................................................... 17
SMART Data Structure ............................................................................................................................................... 18
SMART Attributes ........................................................................................................................................................ 19

List of Figures
Figure 1. Functional Block Diagram ............................................................................................................................................... 4
Figure 2. Physical Dimensions ....................................................................................................................................................... 6
Figure 3. 22 pin (7+15) SATA connector ...................................................................................................................................... 10

List of Tables
Table 1. General Specifications……………………………………………………………………………………………………………..3
Table 2. Part Numbers……………………………………………………………………………………………………………………......5
Table 3. Endurance Estimates by Part Number…………………………………………………………………………………………...8
Table 4. Supported ATA Commands………………………………………………………………………………………………………12
Table 5. Identify Device Parameters……………………………………………………………………………………………………….14© 2015 | Delkin Devices Inc.

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S225 2.5” SATA SSD

L500285 Rev. F

1.0 General Specifications
The S225 Series of 2.5” SATA II drives represents Delkin Device’s next generation in solid state technology,
delivering the performance, reliability and endurance demanded by embedded industrial users. Delkin’s
drives are offered in two product grades: SLC Industrial and MLC Industrial, in capacities from 8GB to 512GB.
This broad product range allows customers to select the optimum product for their application, whether as aboot drive or for heavy data capture, based on read/write performance, endurance, temperature range or cost
per GB. Superior resistance to shock and vibration, along with optional conformal coating, make them ideal
for embedded systems and harsh environments.

Table 1. General Specifications
Specification

Value

Model Numbers

See Table 2

Capacity

SLC:
MLC:

Form Factor

SFF-8201 Specification for 2.5” Form Factor(Small Form Factor Committee)

Interface

SATA revision 2.6, compatible with SATA 1.5Gb/s and 3.0Gb/s
interface rates.

Interface connector

22 Pin (7 +15) SATA connector (see Section 4 for pin-out)

Hot swappable

Yes

Environmental certifications

RoHS and CE/FCC

8GB – 256GB
16GB – 512GB

Performance
Interface burst speed

1.5 or 3.0 Gb/s

Sustained read (512 byte)

Up to 240 MB/s (varies by configuration)

Sustained write (512 byte)

Up to 190 MB/s (varies by configuration)

Reliability/Endurance
MTBF>2,500,000 power on hours @ 0°C>300,000 power on hours @ 60°C

Endurance (TBW)

See table in section 3.6

Features
TRIM

Supports TRIM based on ATA-8

Native Command Queuing

Supports up to 32 Commands

Power
Supply voltage (operating)

3.3V ±10%5.0V ±10%

Idle

190mA

140mA

Read

330mA

235mA

Write

550mA

415mA

Max Current:(may vary with drive configuration)© 2015 | Delkin Devices Inc.

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S225 2.5” SATA SSD

L500285 Rev. F

Environmental
Storage temperature (°C)

-50 ~ 100°C

Operating temperature (°C)

-40 ~ 85°C

Vibration (operating/non-operating)

20G (80 – 2000 Hz)

Shock (operating/non-operating)

1,500G/0.5 ms

Acoustic noise

0 dB

Physical Dimensions
Height9.20 ±0.15mm (0.36”)

Width

69.75 +0.25mm/-0.15mm (2.75”)

Length

99.70 ± 0.25mm (3.93”)

1.1 Functional Block Diagram

NAND
SATA
Host Interface

CONTROLLER

Flash

128MB DRAM

Figure 1. Functional Block Diagram© 2015 | Delkin Devices Inc.

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S225 2.5” SATA SSD

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1.2 Part Numbers
Table 2. Part Numbers
Product Grades
Capacity

8GB
16GB
32GB

64GB
128GB
256GB
512GB

MLC Industrial Grade(-40° to 85°C)

SLC Industrial Grade(-40° to 85°C)

Part Numbers

SLC Industrial Grade

DE08TFHXP-25000-D

MLC Industrial Grade

DE16NHUXP-25000-D

SLC Industrial Grade

DE16TFNXP-25000-D

MLC Industrial Grade

DE32NGTXP-25000-D

SLC Industrial Grade

DE32TFNXP-25000-D
DE32TGPXP-25000-D

MLC Industrial Grade

DE64NKBXP-25000-D

SLC Industrial Grade

DE64MGGXP-25000-D
DE64TGPXP-25000-D

MLC Industrial Grade

DE1HNKBXP-25000-D

SLC Industrial Grade

DE1HMGMXP-25000-D

MLC Industrial Grade

DE2HNKCXP-25000-D

SLC Industrial Grade

DE2HMGMXP-25000-D

MLC Industrial Grade

DE5HNKCXP-25000-D*Note: Usable capacities are within 10% of the gross capacity figures shown above, which is typical with all
NAND flash devices, as a small portion of the total is needed for controller firmware and spare block reserves.

© 2015 | Delkin Devices Inc.

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S225 2.5” SATA SSD

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2.0 Mechanical Specifications
2.1 Dimensions
Dim ens i o n

Me as ur em ent

Height9.20 mm ±0.15 (0.36”)

Width

69.75 mm +0.25/-0.15 (2.75”)

Length

99.70 mm ±0.25 (3.93”)

Figure 2. Physical Dimensions

Note: All dimensions are in millimeters© 2015 | Delkin Devices Inc.

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S225 2.5” SATA SSD

L500285 Rev. F

3.0 Product Specifications
3.1 System Interface and Configuration






Interface burst speed: 3.0 Gb/s
PIO 0-4
Up to UDMA mode 6 (Ultra DMA133)
Fully compatible with ATA-7 Standard
SATA Rev. 2.6

3.2 System Performance
Read / Write

SLC Performance

MLC Performance

Sequential Read

Up to 240 MB/s*

Up to 240 MB/s*

Sequential Write

Up to 190 MB/s*

Up to 185 MB/s**Dependent upon drive capacity and flash configuration.

3.3 I/O Performance
Sequential
Read

Sequential
Write

Random Read

Random Write

512B

18300

13500

7500

1700

4KB

14600

10100

4400

650

Units
I/Os per second

3.4 Supply Voltage
Item

Requirements

3.3 V ± 10%
Operating Voltages
5 V ± 10%

3.5 System Power Consumption
P o we r S t a t e

Max Current @ 3.3 V

Max Current @ 5 V

Idle

190 mA

140 mARead

330 mA

235 mAWrite

550 mA415 mA© 2015 | Delkin Devices Inc.

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3.6 System Reliability
MTBF
AttributeValue>2.5 Million power-on hours @ 0°C

MTBF>300,000 power-on hours @ 60°C

Endurance
The table below provides estimates of drive endurance (expressed as Terabytes Written
or TBW) based on specific workload scenarios, using a theoretical model that takes into
account the specific flash specifications in each drive configuration. Contact Delkin for
endurance estimates for other specific workload scenarios.

Table 3. Endurance Estimates by Part Number
Sequential Write Size, 24/7 Operation
Part Number(s)Description

1000 Bytes/Sec

5000 Bytes/Sec

DE08TFHXP-25000-D

8GB SLC, Industrial Grade

8 TBW

18 TBW

DE16TFNXP-25000-D

16GB SLC, Industrial Grade

16 TBW

36 TBW

DE32TGPXP-25000-D
DE32TFNXP-25000-D

32GB SLC, Industrial Grade

30 TBW

69 TBW

DE64MGGXP-25000-D

64GB SLC, Industrial Grade

33 TBW

133 TBW

DE64TGPXP-25000-D

64GB SLC, Industrial Grade

60 TBW

125 TBW

DE1HMGMXP-25000-D

128GB SLC, Industrial Grade

61 TBW

259 TBW

DE2HMGMXP-25000-D

256GB SLC, Industrial Grade

120 TBW

500 TBW

DE16NHUXP-25000-D

16GB MLC, Industrial Grade<1 TBW

1 TBW

DE32NGTXP-25000-D

32GB MLC, Industrial Grade

1 TBW

3 TBW

DE64NKBXP-25000-D

64GB MLC, Industrial Grade

1 TBW

6 TBW

DE1HNKBXP-25000-D

128GB MLC, Industrial Grade

3 TBW

12 TBW

DE2HNKCXP-25000-D

256GB MLC, Industrial Grade

5 TBW

25 TBW

DE5HNKCXP-25000-D

512GB MLC, Industrial Grade

11 TBW

46 TBW

The figures provided are estimates and not guarantees of endurance. Actual results may vary depending on usage model, operating
temperature and other conditions.

© 2015 | Delkin Devices Inc.

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S225 2.5” SATA SSD

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3.7 Environmental Specifications
Features

Operating
MLC Industrial Grade: 40 ~ 85°C

Operating Temperature

SLC Industrial Grade: -40 ~ 85°C

Storage Temperature-50 ~ 100°C

Vibration

20 G peak to peak max. (operating/non-operating)Shock1500 G max. (operating/non-operating)Acoustic Noise

0 dB

3.8 Capacity Information*
Drive Size

Cylinders

Heads

Sectors

Total Sectors

8GB

15,53816

63

15,466,496

16GB

16,383156330,932,992

32GB

16,38315

63

61,865,984

64GB

16,383

15

63

123,731,968

128GB

16,38315

63247,463,936

256GB

16,38315

63494,927,872

512GB

16,38315

63989,855,744*Note that for any drive with a capacity over 8GB, these are not true CHS settings, as the drive is in LBA
mode and is only emulating CHS settings.

© 2015 | Delkin Devices Inc.

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S225 2.5” SATA SSD

L500285 Rev. F

4.0 Electrical Interface Specification
4.1 Serial ATA Interface connector
The Host is connected to the SSD with a standard 22 pin (7 + 15) SATA connector.

Figure 3. 22 pin (7+15) SATA connector

4.2 Pin Assignments
Signal Segment Pinout
Pin

Signal

S1

GND

S2

RX+

S3

RX-

S4

GND

S5

TX-

S6

TX+

S7

GND

Power Ground
Differential signal pair A
Power Ground
Differential signal pair B
Power Ground

Power Segment Pinout
Pin

SignalP1

V3

3.3V Power Input

P2

V3

3.3V Power Input

P3

V3

3.3V Power Input

P4

GND

GroundP5

GND

GroundP6

GND

GroundP7

V5

5V Power Input

P8V55V Power Input

P9V55V Power Input

P10

GND

GroundP11

Reserved

P12

GND

GroundP13

N.C.

No Connection

P14

N.C.

No Connection

P15

N.C.

No Connection© 2015 | Delkin Devices Inc.

Activity LED

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L500285 Rev. F

4.3 Absolute Maximum Ratings 3.3 Volt
Parameters

Symbol

Min

Max

Unit

Input Voltage

Vcc

-0.3

3.6

V

4.4 Absolute Maximum Ratings 5 Volt
Parameters

S ym b o l

Mi n

Ma x

Unit

Input Voltage

Vcc

-0.3

5.5

V

4.5 Electrical Characteristics
4.5.1 In 3.3 Volt Circuit
Parameters

SymbolTypicalUnit

Supply Voltage

Vcc

3.3 ± 10%V

Idle Current

ISLP

190

mA

Read Current

IACTR

300

mA

Write Current

IACTW

530

mA

TX Differential Output Voltage

VdiffTx

500

mVppd

RX Differential Input Voltage

VdiffRx

400

mVppd

Parameters

SymbolTypicalUnit

Supply Voltage

Vcc

5 ± 10%V

Idle Current

ISLP

140

mA

Read Current

IACTR

210

mA

Write Current

IACTW

350

mA

TX Differential Output Voltage

VdiffTx

500

mVppd

RX Differential Input Voltage

VdiffRx

400

mVppd

4.5.2 In 5 Volt Circuit© 2015 | Delkin Devices Inc.

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S225 2.5” SATA SSD

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5.0 Command Descriptions
5.1 Supported ATA Commands
Table 4: Supported ATA Commands
Command Name

Command
Code (Hex)ProtocolGeneral Feature Set
Execute Drive Diagnostic

90h

Device diagnostic

Flush Cache

E7h

Non-data

Identify Device

ECh

PIO data-in

Read DMA

C8h

DMA

Read Multiple

C4h

PIO data-in

Read Sector(s)20h

PIO data-in

40h or 41h

Non-data

Set Feature

Efh

Non-data

Set Multiple Mode

C6h

Non-data

Write DMA

CAh

DMA

Write Multiple

C5h

PIO data-out

Write Sector(s)30h

PIO data-out

NOP

00h

Non-data

Read Buffer

E4h

PIO data-in

Write Buffer

E8h

PIO data-out

Read Verify Sector(s)Power Management Feature Set
Check Power ModeE5h or 98h

Non-data

Idle

E3h or 97h

Non-data

Idle ImmediateE1h or 95h

Non-data

Sleep

E6h or 99h

Non-data

StandbyE2h or 96h

Non-data

Standby Immediate

E0h or 94h

Non-data

Security Set Password

F1h

PIO data-out

Security Unlock

F2h

PIO data-out

Security Erase Prepare

F3h

Non-data

Security Erase Unit

F4h

PIO data-out

Security Freeze Lock

F5h

Non-data

Security Disable Password

F6h

PIO data-out

Security Mode Feature Set© 2015 | Delkin Devices Inc.

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Command
Code (Hex)ProtocolSMART Disable Operations

B0h

Non-data

SMART Enable / Disable Autosave

B0h

Non-data

SMART Enable Operations

B0h

Non-data

SMART Return Status

B0h

Non-data

SMART Execute Off-line Immediate

B0h

Non-data

SMART Read Data

B0h

Non-data

Read Native Max Address

F8h

Non-data

Set Max Address

F9h

Non-data

Set Max Set Password

F9h

PIO data-out

Set Max Lock

F9h

Non-data

Set Max Freeze Lock

F9h

Non-data

Set Max Unlock

F9h

PIO data-out

Flush Cache Ext

EAh

Non-data

Read Sector(s) Ext

24h

PIO data-in

Read DMA Ext

25h

DMA

Read Multiple Ext

29h

PIO data-in

Read Native Max Address Ext

27h

Non-data

Read Verify Sector(s) Ext

42h

Non-data

Set Max Address Ext

37h

Non-data

Write DMA Ext

35h

DMA

Write DMA FUA Ext

3Dh

DMA

Write Multiple Ext

39h

PIO data-out

Write Multiple FUA Ext

CEh

PIO data-out

Write Sector(s) Ext

34h

PIO data-out

Read FPDMA Queued

60h

DMA Queued

Write FPDMA Queued

61h

DMA Queued

Command Name
SMART Feature Set

Host Protected Area Feature Set

48-bit Address Feature Set

NCQ Feature Set© 2015 | Delkin Devices Inc.

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5.2 Identify Device Parameters
The IDENTIFY DEVICE Command enables the host to receive parameter information from the device. The
following table provides the definition and value of each field in the Identify Device Information.

Table 5: Identify Device Parameters
Word Address

Default Value

0

044Ah

F

General configuration bit

1

XXXXh

X

Default number of cylinders

2

0000h

V

Reserved

3

00XXh

X

Default number of heads

4

0000h

X

Obsolete

5

0240h

X

Obsolete

6

XXXXh

F

Default number of sectors per track

7-8

XXXXh

V

Number of sectors per card

9

0000h

X

Obsolete

10-19

XXXXh

F

Serial number in ASCII

20

0002h

X

Obsolete

21

0002h

X

Obsolete

22

0000h

X

Obsolete

23-26

XXXXh

F

Firmware revision in ASCII

27-46

XXXXh

F

Model number in ASCII

47

8001h

F

Max number of sectors on Read/Write Multiple command

48

0000h

F

Reserved

49

0F00h

F

Capabilities

50

4000h

F

Capabilities

51

0200h

F

PIO data transfer cycle timing mode

52

0000h

X

Obsolete

53

0007h

F

Field Validity

54

XXXXh

X

Current numbers of cylinders

55

XXXXh

X

Current numbers of heads

56

XXXXh

X

Current sectors per track

57 - 58

XXXXh

X

Current capacity in sectors (LBAs)(Word 57 = LSW, Word 58 = MSW)

59

0100h

F

Multiple sector setting

60-61

XXXXh

F

Total number of sectors addressable in LBA Mode

62

0000h

X

Reserved

63

0007h

F

Multiword DMA transfer mode
Supports MDMA Modes 0,1 & 2

64

0003h

F

Advanced PIO modes supported© 2015 | Delkin Devices Inc.

Fixed/Variable Data Field Type Information

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S225 2.5” SATA SSD

L500285 Rev. F

Word Address

Default Value

Fixed/Variable Data Field Type Information

65

0078h

F

Minimum Multiword DMA transfer cycle time per word

66

0078h

F

Recommended Multiword DMA transfer cycle time

67

0078h

F

Minimum PIO transfer cycle time without flow control

68

0078h

F

Minimum PIO transfer time with IORDY flow control

69-74

0000h

F

Reserved

75

001Fh

F

Queue Depth

0006h

F

Serial ATA capabilities Supports SATA Gen 1
 Supports SATA Gen 2

0206h

F

77

0000h

V

Reserved

78

0008h

F

Device supports initiating interface power management

79

0000h

V

Reserved

80

0080h

F

Major version number (ATAPI-7)

81

0000h

F

Minor version number

82

742Bh

F

Command sets supported 0

83

5500h

F

Command sets supported 1

84

4002h

F

Command sets supported 2

85 - 87

XXXXh

VCommand sets/feature enabled

88

007Fh

V

UDMA mode supported and selected

89

0003h

F

Time required for Security erase unit completion

90

0000h

F

Time required for Enhanced security erase unit completion

91

0000h

V

Current Advanced power management value

92

FFFeh

V

Master Password Revision Code

93-99

0000h

V

Reserved

100-103

XXXXh

VMaximum user LBA for 48bit address feature set

104-1270000h

VReserved

128

0001h

V

Security status

129-1590000h

X

Vendor unique bytes

160

0000h

F

Power requirement description

161

0000h

X

Reserved

162

0000h

F

Key management schemes supported

163

0000h

F

CF Advanced True IDE Timing Mode Capability and Setting

164 – 216

0000h

V

Reserved

217

0100h

F

Non-rotating media (SSD)

218 – 255

0000h

X

Reserved

76© 2015 | Delkin Devices Inc.



Supports receipt of host-initiated interface power
management requests

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Notes:
1. F= content (byte) is fixed and does not change.
2. V= content (byte) is variable and may change depending on the state of the device or the commands
executed by the device.
3. X= content (byte) is vendor specific and may be fixed or variable.

© 2015 | Delkin Devices Inc.

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S225 2.5” SATA SSD

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6.0 SMART Feature Set
The Delkin S225 drives feature Self-Monitoring, Analysis and Reporting Technology (SMART). Enabled by readilyavailable software utilities, SMART can monitor online storage devices for failure prediction, status reporting, andbad sector detection and repair. SMART can protect against system downtime and prevent data loss.

6.1 Sub Command Sets
In order to select a subcommand, the host must write the subcommand code to the device’s Features Register
before issuing the SMART Function Set command. The subcommands are listed below:

Value

Subcommand

Descr ipt ion

D0h

READ DATA

Retrieves SMART information from the device, which ispacked into the data structure as defined in Section 6.2

D1h

READ ATTRIBUTETHRESHOLD

This command is obsolete as of ATA-4 and later
versions, but is maintained for backward compatibility.

D2h

ENABLE/DISABLE AUTOSAVE

Enables / disables optional attribute auto-save feature,
however, the auto-save feature is always enabled.

D3h

SAVE ATTRIBUTE VALUESThis command is obsolete as of ATA-6 and later
versions, but is maintained for backward compatibility.
Attribute values are saved automatically.

D4h

EXECUTE OFF-LINE IMMEDIATE

This command initiates activities that collect SMART
data or execute self-diagnostic test routines in an offline mode or captive mode, however there are currently
no self-test or off-line data collection capabilities.

D5h

RESERVED

D6h

RESERVED

D8h

ENABLE SMART OPERATIONSThis command enables access to all SMART
command operations.

D9h

DISABLE SMART OPERATIONSThis command disables access to all SMART
command operations.

RETURN STATUS

This command returns the reliability status of thedevice to the host. This reliability status is determinedby comparing the number of available spare blocks to
the minimum spare block threshold.

DAh

If the reserved size is below the threshold, the status can be read from the Cylinder Register using the Return
Status command (DAh.) Please note that D1h and D3h are obsolete commands according to ATA-7, but are still
provided to maintain backward compatibility with previous ATA specifications© 2015 | Delkin Devices Inc.

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6.2 SMART Data Structure
The following table describes the data structure returned by the “SMART Read Data (D0h)” Command.

Byte

Fixed/Variable

Data Field Type Information

0–1

X

Revision code

2 – 361

X

Vendor specific (See SMART Attributes)362

VOff-line data collection status

363

X

Self-test execution status byte

364 – 365

V

Total time in seconds to complete off-line data collection activity

366

X

Vendor specific367

FOff-line data collection capability

368 – 369F

SMART capability

370

F

Error logging capability
 7-1 Reserved 0
1=Device error logging supported

371

X

Vendor specific372

F

Short self-test routine recommended polling time (in minutes)

373

F

Extended self-test routine recommended polling time (in minutes)

374

FConveyance self-test routine recommended polling time (in minutes)

375 – 385

R

Reserved

386 – 395

F

Firmware revision / Date code

396 – 397

F

Number of initial invalid blocks (396= MSB, 397= LSB)

398 – 399

F

Reserved

400 – 406

F

Vendor specific407 – 415

X

Vendor specific416

FReserved

417

F

Program/write to the strong page only

418 – 419

V

Number of spare blocks

420 – 423

V

Average Erase Count

424 – 510

X

Vendor specific511

V

Data structure checksum

Notes:
1. F= content (byte) is fixed and does not change.
2. V= content (byte) is variable and may change depending on the state of the device or the commands
executed by the device.
3. X= content (byte) is vendor specific and may be fixed or variable.
4. R= content (byte) is reserved and shall be zero.

© 2015 | Delkin Devices Inc.

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6.3 SMART Attributes
The following table defines the SMART data attributes currently supported and their descriptions, which arelocated at offset 2 of the SMART Data Structure (see section 6.2.)
Attribute
ID

Attribute Name

Reset at
Power
On?
Yes

Max
Size
(Bytes)4

0x01

Read Error Rate

0x05

ReallocatedSectors CountNo

2

Total number of bad blocks that are generated
after the card is initialized by the pretest code.

0x09

Power-On Hours

No

4

Total accumulated hours the device is powered
on.

0x0C

Power Cycle
Count

No

2

Total number of power cycles that have occurred
during the life of the drive.

0xA0

Uncorrectable
Sector CountduringRead/Write

Yes

4

Total count of uncorrectable errors when device
performing read/write operations.

0xA1

Number of Valid
Spare Blocks

No

2

Total number of overall valid spare blocks.

0xA3

Number of Initial
Invalid Blocks

No

2

Total number of bad blocks found during the card
initialization (pretest mode.)

0xA4

Total Erase
Count

No

7

Total number of erase operations that have been
performed on all the blocks (excluding thesystem blocks, bad blocks and reserved blocks.)

0xA5

Maximum Erase
Count

No

4

The maximum number of erase operations thathave ever been performed on a single block(excluding the system blocks, bad blocks andreserved blocks.)

0xA6

Minimum Erase
Count

No

4

The minimum number of erase operations thathave ever been performed on a single block(excluding the system blocks, bad blocks andreserved blocks.)

0xA7

Average Erase
Count

No

4

The average number of erase operations over
the all available valid blocks (excluding thesystem blocks, bad blocks and reserved blocks.)

0xC0

Power-Off
Retract CountNo

2

Total number of sudden power-off count that
affects the data reliability.

0xC6

Uncorrectable
Sector Count Offline

No4

Total accumulated count of errors that cannot becorrected by ECC engine for the life of the device

0xC7

UltraDMA CRC
Error CountNo

2

Total count of CRC errors during communication
via the interface cable.

© 2015 | Delkin Devices Inc.

Attribute Description

The rate of the total CRC errors occurred over
the total LBA’s read. The total LBA’s read will bereset to 0 after each power cycle, while the CRC
errors will be accumulated over the life of thedrive.

19

S225 2.5” SATA SSD

L500285 Rev. F

0xF1

Total LBA’s Written

No

7

The lower 7 bytes of the 12-byte total number of
LBA’s written to the device. (The upper 5 byte
value is located at Attribute 0xF3).

0xF2

Total LBA’s ReadNo

7

The lower 7 bytes of the 12-byte total number of
LBA’s read from the device. (The upper 5 byte
value is located at Attribute 0xF4).

0xF3

Total LBA’s Written
ExpandedNo

5

The upper 5 bytes of the 12-byte total number of
LBA’s written to the device. (The lower 7 byte
value is located at Attribute 0xF1).

0xF4

Total LBA’s Read
ExpandedNo

5

The upper 5 bytes of the 12-byte total number of
LBA’s read from the device. (The lower 7 byte
value is located at Attribute 0xF2).

Data Structure
The attribute information occupies 12 bytes of data which is described in the following table:

Byte

Description

0

Attribute ID

1–2

Reserved

3

Contains normalized fixed value (“0x64”)

4Duplicate of byte 3, which is a fixed value (“0x64”)

5 – 11Raw data value in little-endian format© 2015 | Delkin Devices Inc.

20