CP2102
SINGLE-CHIP USB TO UART BRIDGE
Single-Chip USB to UART Data Transfer- Integrated USB transceiver; no external resistors
required- Integrated clock; no external crystal required- Integrated 1024-Byte EEPROM for vendor ID, productID, serial number, power descriptor, release number,and product description strings- On-chip power-on reset circuit- On-chip voltage regulator: 3.3 V output- 100% pin and software compatible with CP2101

USB Function Controller- USB Specification 2.0 compliant; full-speed (12 Mbps)- USB suspend states supported via SUSPEND pins
Asynchronous Serial Data BUS (UART)- All handshaking and modem interface signals- Data formats supported:

Virtual COM Port Device Drivers- Works with Existing COM Port PC Applications- Royalty-Free Distribution License- Windows Vista/XP/Server 2003/2000- Mac OS-X/OS-9- Linux
USBXpress™ Direct Driver Support- Royalty-Free Distribution License- Windows Vista/XP/Server 2003/2000- Windows CE
Example Applications- Upgrade of RS-232 legacy devices to USB- Cellular phone USB interface cable- PDA USB interface cable- USB to RS-232 serial adapter
Supply Voltage- Self-powered: 3.0 to 3.6 V- USB bus powered: 4.0 to 5.25 V- Data bits: 5, 6, 7, and 8- Stop bits: 1, 1.5, and 2- Parity: odd, even, mark, space, no parity- Baud rates: 300 bps to 1 Mbits- 576 Byte receive buffer; 640 byte transmit buffer- Hardware or X-On/X-Off handshaking supported- Event character support- Line break transmission

Package- Pb-free 28-pin QFN (5x5 mm)
Ordering Part Number- CP2102-GM
Temperature Range: –40 to +85 °C

CP2102
7

REGIN

IN

VDD

Voltage
Regulator

RST

OUT
SUSPEND
6

3

8

USB
CONNECTOR

3.3 V
VDD

SUSPEND

GND

RI

48 MHzOscillator

VBUS

DCD
DTR
DSR

1

VBUS
2
D3
D+
GND 4

5
4

5

6

D1 D2 D3

UART
DD+

USB
Transceiver

USB Function
Controller
640B 576B
1024B
TX
RX
EEPROM
Buffer Buffer

TXD
RXD
RTS
CTS

9
12
11

(to external circuitry
for USB suspend
states)2
1
28
27

External RS-232
transceiver or
UART circuitry

26
25
24
23

Figure 1. Example System Diagram

Rev. 1.4 8/10

Copyright © 2010 by Silicon Laboratories

CP2102

CP21022

Rev. 1.4

CP2102
TABLE OF CONTENTS
SectionPage

1. System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3. Pinout and Package Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4. USB Function Controller and Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5. Asynchronous Serial Data Bus (UART) Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6. Internal EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7. CP2102 Device Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
7.1. Virtual COM Port Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.2. USBXpress Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.3. Driver Customization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
7.4. Driver Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
8. Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
9. Relevant Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Rev. 1.4

3

CP2102
1. System Overview
The CP2102 is a highly-integrated USB-to-UART Bridge Controller providing a simple solution for updating RS-232
designs to USB using a minimum of components and PCB space. The CP2102 includes a USB 2.0 full-speedfunction controller, USB transceiver, oscillator, EEPROM, and asynchronous serial data bus (UART) with fullmodem control signals in a compact 5 x 5 mm QFN-28 package. No other external USB components are required.
The on-chip EEPROM may be used to customize the USB Vendor ID, Product ID, Product Description String,
Power Descriptor, Device Release Number, and Device Serial Number as desired for OEM applications. The
EEPROM is programmed on-board via the USB, allowing the programming step to be easily integrated into the
product manufacturing and testing process.
Royalty-free Virtual COM Port (VCP) device drivers provided by Silicon Laboratories allow a CP2102-based
product to appear as a COM port to PC applications. The CP2102 UART interface implements all RS-232 signals,
including control and handshaking signals, so existing system firmware does not need to be modified. In many
existing RS-232 designs, all that is required to update the design from RS-232 to USB is to replace the RS-232
level-translator with the CP2102. Direct access driver support is available through the Silicon Laboratories
USBXpress driver set.
An evaluation kit for the CP2102 (Part Number: CP2102EK) is available. It includes a CP2102-based USB-toUART/RS-232 evaluation board, a complete set of VCP device drivers, USB and RS-232 cables, and fulldocumentation. Contact a Silicon Labs sales representatives or go to www.silabs.com to order the CP2102
Evaluation Kit.

4

Rev. 1.4

CP2102
2. Electrical Specifications
Table 1. Absolute Maximum Ratings
Parameter

Conditions

Min

Typ

Max

Units

Ambient Temperature under Bias

–55

—

125

°C

Storage Temperature

–65

—

150

°C

Voltage on any I/O Pin or RST with respect to GND

–0.3

—

5.8

V

Voltage on VDD with respect to GND

–0.3

—

4.2

V

Maximum Total Current through VDD and GND

—

—

500

mA

Maximum Output Current sunk by RST or any I/O pin

—

—

100

mA

Note: Stresses above those listed may cause permanent device damage. This is a stress rating only, and functional
operation of the devices at or exceeding the conditions in the operation listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods may affect device reliability.

Table 2. Global DC Electrical Characteristics
VDD = 3.0 to 3.6 V, –40 to +85 °C unless otherwise specified

Parameter

Conditions

Supply Voltage

Min

Typ

Max

Units

3.0

3.3

3.6

V

Supply Current1

Normal Operation;
VREG Enabled

—

20

26

mA

Supply Current1

Suspended:
VREG Enabled

—

80

100

µA

Supply Current - USB Pull-up2

—

200

228

µA

Specified Operating Temperature Range

–40

—

+85

°C

Notes:
1. USB Pull-up Current should be added for total supply current.
2. The USB Pull-up supply current values are calculated values based on USB specifications.

Table 3. UART and Suspend I/O DC Electrical Characteristics
VDD = 3.0 to 3.6 V, –40 to +85 °C unless otherwise specified

Parameters

Conditions

Min

Typ

Max

UNITS

Output High Voltage

IOH = –3 mA
IOH = –10 µA
IOH = –10 mA

VDD – 0.7
VDD – 0.1———
VDD – 0.8

—
—
—

V

IOL = 8.5 mA
IOL = 10 µA
IOL = 25 mA

—
—
—

—
—
1.0

0.6
0.1
—

V

Input High Voltage

2.0

—

—

V

Input Low Voltage

—

—

0.8

V

Input Leakage Current

—

25

50

µA

Output Low Voltage

Rev. 1.4

5

CP2102
Table 4. Reset Electrical Characteristics–40 to +85 °C unless otherwise specified

Min

Typ

Max

Units

RST Input High Voltage

0.7 x VDD——V

RST Input Low Voltage——

0.25 x VDD

V

Minimum RST Low Time to Generate a System Reset

15

—

—

µs

Parameter

6

Conditions

Rev. 1.4

CP2102
3. Pinout and Package Definitions
Table 5. CP2102 Pin Definitions
Name

Pin #

Type

VDD

6

Power In

Description
3.0–3.6 V Power Supply Voltage Input.

Power Out 3.3 V Voltage Regulator Output.
See "8. Voltage Regulator" on page 14.
GND

3

RST

9

D I/O

Device Reset. Open-drain output of internal POR or VDD monitor. An
external source can initiate a system reset by driving this pin low forat least 15 µs.

REGIN

7

Power In

5 V Regulator Input. This pin is the input to the on-chip voltage regulator.

VBUS

8

D In

VBUS Sense Input. This pin should be connected to the VBUS signalof a USB network. A 5 V signal on this pin indicates a USB network
connection.

D+

4

D I/O

USB D+

D–

5

D I/O

USB D–

TXD

26

D Out

Asynchronous data output (UART Transmit)

RXD

25

D In

Asynchronous data input (UART Receive)

CTS

23*

D In

Clear To Send control input (active low)

RTS

24*

D Out

Ready to Send control output (active low)

DSR

27*

D in

Data Set Ready control input (active low)

DTR

28*

D Out

Data Terminal Ready control output (active low)

DCD

1*

D In

Data Carrier Detect control input (active low)

RI

2*

D In

Ring Indicator control input (active low)

SUSPEND

12*

D Out

This pin is driven high when the CP2102 enters the USB suspend
state.

SUSPEND

11*

D Out

This pin is driven low when the CP2102 enters the USB suspend
state.

NC

10, 13–22

GroundThese pins should be left unconnected or tied to VDD.

*Note: Pins can be left unconnected when not used.

Rev. 1.4

7

DTR

DSR

TXD

RXD

RTS

CTS

NC

28

27

26

25

24

23

22

CP2102

DCD

1

21

NC

RI

2

20

NC

GND

3

19

NC

D+

4

18

NC

D-

5

17

NC

VDD

6

16

NC

REGIN

7

15

NC

CP2102Top View

8

9

10

11

12

13

14

VBUS

RST

NC

SUSPENDSUSPEND

NC

NC

GND

Figure 2. QFN-28 Pinout Diagram (Top View)

8

Rev. 1.4

CP2102

Figure 3. QFN-28 Package Drawing

Table 6. QFN-28 Package Dimensions
Dimension

Min

Typ

Max

Dimension

Min

Typ

Max

A
A1
A3
b
D
D2
e
E
E2

0.80
0.00

0.90
0.02
0.25 REF
0.23
5.00 BSC.
3.15
0.50 BSC.
5.00 BSC.
3.15

1.00
0.05

L
L1
aaa
bbb
ddd
eee
Z
Y

0.35
0.00

0.55
—
0.15
0.10
0.05
0.08
0.44
0.18

0.65
0.15

0.18
2.90

2.90

0.30
3.35

3.35

Notes:
1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. Dimensioning and Tolerancing per ANSI Y14.5M-1994.
3. This drawing conforms to the JEDEC Solid State Outline MO-220, variation VHHD except forcustom features D2, E2, Z, Y, and L, which are toleranced per supplier designation.
4. Recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body
Components.

Rev. 1.4

9

CP2102

Figure 4. QFN-28 Recommended PCB Land Pattern

Table 7. QFN-28 PCB Land Pattern Dimensions
Dimension
C1
C2
E
X1

Min

Max

Dimension

Min

Max

X2
Y1
Y2

3.20
0.85
3.20

3.30
0.95
3.30

4.80
4.80
0.50
0.20

0.30

Notes:
General1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. Dimensioning and Tolerancing is per the ANSI Y14.5M-1994 specification.
3. This Land Pattern Design is based on the IPC-7351 guidelines.
Solder Mask Design
4. All metal pads are to be non-solder mask defined (NSMD). Clearance between the solder
mask and the metal pad is to be 60 µm minimum, all the way around the pad.
Stencil Design
5. A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used
to assure good solder paste release.
6. The stencil thickness should be 0.125 mm (5 mils).
7. The ratio of stencil aperture to land pad size should be 1:1 for all perimeter pins.
8. A 3x3 array of 0.90 mm openings on a 1.1 mm pitch should be used for the center pad toassure the proper paste volume (67% Paste Coverage).
Card Assembly
9. A No-Clean, Type-3 solder paste is recommended.
10. The recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small
Body Components.

10

Rev. 1.4

CP2102
4. USB Function Controller and Transceiver
The Universal Serial Bus function controller in the CP2102 is a USB 2.0 compliant full-speed device with integrated
transceiver and on-chip matching and pull-up resistors. The USB function controller manages all data transfers
between the USB and the UART as well as command requests generated by the USB host controller andcommands for controlling the function of the UART.
The USB Suspend and Resume signals are supported for power management of both the CP2102 device as well
as external circuitry. The CP2102 will enter Suspend mode when Suspend signaling is detected on the bus. On
entering Suspend mode, the CP2102 asserts the SUSPEND and SUSPEND signals. SUSPEND and SUSPEND
are also asserted after a CP2102 reset until device configuration during USB Enumeration is complete.
The CP2102 exits the Suspend mode when any of the following occur: (1) Resume signaling is detected or
generated, (2) a USB Reset signal is detected, or (3) a device reset occurs. On exit of Suspend mode, the
SUSPEND and SUSPEND signals are de-asserted.
Both SUSPEND and SUSPEND temporarily float high during a CP2102 reset. If this behavior is undesirable, astrong pulldown (10 k) can be used to ensure SUSPEND remains low during reset. See Figure 5 for otherrecommended options.
VDD

CP21027R1
4.7 k

RST
SUSPEND
6C4
4.7 FC2
0.1 F

3

Option 1

REGIN

C1
1 F

VDD

SUSPEND

GND

RI

9

(to external circuitry
for USB suspend
states)

12
11
R2
10 k
2

Option 4

Option 2
8

USB
CONNECTOR

DCD

VBUS

DTR
DSR

1

VBUS
2
DD+ 3
GND 4

5
4

5

6

D1

D2

D-

TXD

D+

RXD
RTS

D3
Option 3

CTS

1
28
27

External RS-232
transceiver or
UART circuitry

26
25
24
23

Option 1: A 4.7 k pull-up resistor can be added to increase noise immunity.
Option 2: A 4.7 µF capacitor can be added if powering other devices from the on-chip regulator.
Option 3: Avalanche transient voltage suppression diodes should be added for ESD protection .
Option 3: Use Littlefuse p/n SP0503BAHT or equivalent.
Option 4: 10 k resistor to ground to hold SUSPEND low on initial power on or device reset.

Figure 5. Typical Connection Diagram

Rev. 1.4

11

CP2102
5. Asynchronous Serial Data Bus (UART) Interface
The CP2102 UART interface consists of the TX (transmit) and RX (receive) data signals as well as the RTS, CTS,
DSR, DTR, DCD, and RI control signals. The UART supports RTS/CTS, DSR/DTR, and X-On/X-Off handshaking.
The UART is programmable to support a variety of data formats and baud rates. If the Virtual COM Port drivers areused, the data format and baud rate are set during COM port configuration on the PC. If the USBXpress drivers areused, the CP2102 is configured through the USBXpress API. The data formats and baud rates available are listed
in Table 8.

Table 8. Data Formats and Baud Rates
Data Bits

5, 6, 7, and 8

Stop Bits

1, 1.51, and 2

Parity Type
2

Baud Rates

None, Even, Odd, Mark, Space
300, 600, 1200, 1800, 2400, 4000, 4800, 7200, 9600, 14400, 16000, 19200, 28800,
38400, 51200, 56000, 57600, 64000, 76800, 115200, 128000, 153600, 230400, 250000,
256000, 460800, 500000, 576000, 9216003

Notes:
1. 5-bit only.
2. Additional baud rates are supported. See “AN205”.
3. 7 or 8 data bits only.

6. Internal EEPROM
The CP2102 includes an internal EEPROM that may be used to customize the USB Vendor ID (VID), Product ID(PID), Product Description String, Power Descriptor, Device Release Number and Device Serial Number as
desired for OEM applications. If the EEPROM is not programmed with OEM data, the default configuration data
shown in Table 9 is used.
While customization of the USB configuration data is optional, it is recommended to customize the VID/PID
combination. A unique VID/PID combination will prevent the driver from conflicting with any other USB driver. A
vendor ID can be obtained from http://www.usb.org/ or Silicon Laboratories can provide a free PID for the OEM
product that can be used with the Silicon Laboratories VID. It is also recommended to customize the serial number
if the OEM application is one in which it is possible for multiple CP2102-based devices to be connected to thesame PC.
The internal EEPROM is programmed via the USB. This allows the OEM's USB configuration data and serial
number to be written to the CP2102 on-board during the manufacturing and testing process. A stand-alone utility
for programming the internal EEPROM is available from Silicon Laboratories. A library of routines provided in theform of a Windows® DLL is also available. This library can be used to integrate the EEPROM programming step
into custom software used by the OEM to streamline testing and serial number management during manufacturing.
The EEPROM has a typical endurance of 100,000 write cycles with a data retention of 100 years.
USB descriptors can be locked to prevent future modification.

12

Rev. 1.4

CP2102
Table 9. Default USB Configuration Data
Name

Value

Vendor ID

10C4h

Product ID

EA60hPower Descriptor (Attributes) 80h
Power Descriptor(Max. Power)

32h

Release Number

0100h

Serial Number

0001 (63 characters maximum)

Product Description String“CP2102 USB to UART Bridge Controller” (126 characters maximum)

7. CP2102 Device Drivers
There are two sets of device drivers available for the CP2102 devices: the Virtual COM Port (VCP) drivers and the
USBXpress Direct Access drivers. Only one set of drivers is necessary to interface with the device.
The latest drivers are available at http://www.silabs.com/products/microcontroller/downloads.asp.

7.1. Virtual COM Port Drivers
The CP2102 Virtual COM Port (VCP) device drivers allow a CP2102-based device to appear to the PC's
application software as a COM port. Application software running on the PC accesses the CP2102-based device
as it would access a standard hardware COM port. However, actual data transfer between the PC and the CP2102
device is performed over the USB interface. Therefore, existing COM port applications may be used to transfer
data via the USB to the CP2102-based device without modifying the application. See Application Note “AN197:
Serial Communications Guide for the CP210x” for Example Code for Interfacing to a CP2102 using the Virtual
COM drivers.

7.2. USBXpress Drivers
The Silicon Laboratories USBXpress drivers provide an alternate solution for interfacing with CP2102 devices. No
Serial Port protocol expertise is required. Instead, a simple, high-level application program interface (API) is used
to provide simpler CP201x connectivity and functionality. The USBXpress for CP210x Development Kit includes
Windows device drivers, Windows device driver installer and uninstallers, and a host interface function library (hostAPI) provided in the form of a Windows Dynamic Link Library (DLL). The USBXpress driver set is recommended
for new products that also include new PC software. The USBXpress interface is described in Application Note
“AN169: USBXpress Programmer's Guide.”7.3. Driver Customization
In addition to customizing the device as described in Section 7, the drivers and the drivers installation package canbe also be customized. See Application Note “AN220: USB Driver Customization” for more information on
generating customized VCP and USBXpress drivers.

7.4. Driver Certification
The default drivers that are shipped with the CP2102 are Microsoft WHQL (Windows Hardware Quality Labs)
certified. The certification means that the drivers have been tested by Microsoft and their latest operating systems(XP and Vista) will allow the drivers to be installed without any warnings or errors.
The customized drivers that are generated using the AN220 software are not automatically certified. They must go
first through the Microsoft Driver Reseller Submission process. Contact Silicon Laboratories support for assistancewith this process.

Rev. 1.4

13

CP2102
8. Voltage Regulator
The CP2102 includes an on-chip 5 to 3 V voltage regulator. This allows the CP2102 to be configured as either a
USB bus-powered device or a USB self-powered device. These configurations are shown in Figure 6 and Figure 7.
When enabled, the 3 V voltage regulator output appears on the VDD pin and can be used to power external 3 V
devices. See Table 10 for the voltage regulator electrical characteristics.
Alternatively, if 3 V power is supplied to the VDD pin, the CP2102 can function as a USB self-powered device withthe voltage regulator disabled. For this configuration, it is recommended that the REGIN input be tied to the 3 V net
to disable the voltage regulator. This configuration is shown in Figure 8.
The USB max power and power attributes descriptor must match the device power usage and configuration. Seeapplication note “AN144: CP210x Customization Guide” for information on how to customize USB descriptors for
the CP2102.
Note: It is recommended that additional decoupling capacitance (e.g., 0.1 µF in parallel with 1.0 µF) be provided on the REGIN
input.

Table 10. Voltage Regulator Electrical Specifications–40 to +85 °C unless otherwise specified.

Parameter

Conditions

Min

Typ

Max

Units

4.0

—

5.25

V

3.0

3.3

3.6

V

VBUS Detection Input Threshold

1.0

1.8

2.9

V

Bias Current

—

90

—

µA

Input Voltage Range
Output Current = 1 to 100 mA*

Output Voltage*Note: The maximum regulator supply current is 100 mA.

CP2102

VBUS

VBUS Sense

From VBUS
REGIN

5 V InVoltage Regulator (REG0)

3 V Out
To 3 VPower Net

VDD

DevicePower Net

Figure 6. Configuration 1: USB Bus-Powered

14

Rev. 1.4

CP2102CP2102

From VBUS

VBUS

VBUS Sense
From 5 V
Power NetREGIN

5 V InVoltage Regulator (REG0)

3 V Out
To 3V
Power Net

VDD

DevicePower Net

Figure 7. Configuration 2: USB Self-Powered

CP2102

From VBUS

VBUS

VBUS Sense
REGIN

5 V InVoltage Regulator (REG0)

3 V Out
From 3 V
Power Net

VDD

DevicePower Net

Figure 8. Configuration 3: USB Self-Powered, Regulator Bypassed

Rev. 1.4

15

CP2102
9. Relevant Application Notes
The following Application Notes are applicable to the CP2102. The latest versions of these application notes andtheir accompanying software are available at:
http://www.silabs.com/products/microcontroller/applications.asp.
AN144: CP210x Device Customization Guide. This application note describes how to use the AN144 software toconfigure the USB parameters on the CP2102 devices.
AN169: USBXpress Programmer's Guide. This application note describes the USBXpress API interface andincludes example code.
AN197: Serial Communications Guide for the CP210x. This application note describes how to use the standard
Windows COM port function to communicate with the CP2102 and includes example code.
AN205: CP210x Baud Rate Support. This application note describes how to use the AN205 software to configure
the Baud Rate aliasing feature on the CP2102 devices.
AN220: USB Driver Customization. This application note describes how to use the AN220 software to customize
the VCP or USBXpress drivers with OEM information.

16

Rev. 1.4

CP2102
DOCUMENT CHANGE LIST
Revision 1.0 to Revision 1.1
Updated “Linux 2.40” bullet on page 1.
 Changed MLP to QFN throughout.

Revision 1.1 to Revision 1.2







Added additional supported operating systems on
page 1.
Changed VDD conditions of Tables 2 and 3 from aminimum of 2.7 to 3.0 V.
Updated typical and max Supply Current number inTable 2.
Removed tantalum requirement in Figure 5.
Consolidated Sections 8 and 9.
Added Section "9. Relevant Application Notes" onpage 16.

Revision 1.2 to Revision 1.3
Updated Figure 1 on page 1.
 Updated Figure 5 on page 11.
 Updated Maximum VBUS Detection Input Thresholdin Table 10 on page 14.

Revision 1.3 to Revision 1.4
Updated Table 4 RST Input Low Voltage
 Updated Table 6, Note 4.
 Updated Table 7, Note 10.

Rev. 1.4

17

CP2102
CONTACT INFORMATION
Silicon Laboratories Inc.
400 West Cesar Chavez
Austin, TX 78701
Tel: 1+(512) 416-8500
Fax: 1+(512) 416-9669
Toll Free: 1+(877) 444-3032
Please visit the Silicon Labs Technical Support web page:https://www.silabs.com/support/pages/contacttechnicalsupport.aspx
and register to submit a technical support request.

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