CP2102 Datasheet, PDF (1/18 Pages) Silicon Laboratories – SINGLE-CHIP USB TO UART BRIDGE

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
7 _REGIN
USB
CONNECTOR
VBUS ¹
D- ²
D+ ³
GND ⁴
6 _VDD
3 _GND
8 _VBUS
5
D-
4
D+
D1 D2 D3
IN ^Voltage
Regulator
OUT
CP2102
3.3 V
48 MHz
Oscillator
USB
Transceiver
USB Function
Controller
1024B
EEPROM
640B
TX
Buffer
576B
RX
Buffer
UART
Figure 1. Example System Diagram
VDD
RST
9
SUSPEND ¹²
SUSPEND ¹¹
RI
2
DCD
1
DTR
28
DSR
27
TXD
26
RXD
25
RTS
24
CTS
23
(to external circuitry
for USB suspend
states)
External RS-232
transceiver or
UART circuitry
Rev. 1.2 3/07
Copyright © 2007 by Silicon Laboratories
CP2102