CP2102EK datasheet(1/18 Pages) SILABS

Part #	CP2102EK

Description	SINGLE-CHIP USB TO UART BRIDGE

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Manufacturer	SILABS [Silicon Laboratories]

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Rev. 1.2 3/07

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, product

ID, 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:

- 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

Virtual COM Port Device Drivers

- Works with Existing COM Port PC Applications

- Royalty-Free Distribution License

- Windows Vista/XP/Server 2003/2000/98SE

- Mac OS-X / OS-9

- Linux

USBXpress™ Direct Driver Support

- Royalty-Free Distribution License

- Windows Vista/XP/Server 2003/2000

- Windows CE 5.0 and 4.2

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

Package

- Lead free 28-pin QFN (5 x 5 mm)

Ordering Part Number

- CP2102-GM

Temperature Range: –40 to +85 °C

Figure 1. Example System Diagram

CP2102

3.3 V

Voltage

Regulator

48 MHz

Oscillator

IN

OUT

SUSPEND

11

12

REGIN

7

GND

3

RST

9

D+

4

D-

5

8

UART

RI

DCD

CTS

RTS

RXD

TXD

DSR

DTR

2

1

28

27

26

25

24

23

2

3

External RS-232

transceiver or

UART circuitry

(to external circuitry

for USB suspend

states)

VBUS

D-

D+

GND 4

USB

CONNECTOR

6

1

VDD

VBUS

USB Function

Controller

USB

Transceiver

640B

TX

Buffer

576B

RX

Buffer

1024B

EEPROM

VDD

D1 D2 D3

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