CP2103
S INGLE - C HIP USB TO UART B RIDGE
Single-Chip USB to UART Data Transfer
Integrated
Virtual COM Port Device Drivers
USB transceiver; no external resistors
Works
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
Windows
Mac
USB
USBXpress™ Direct Driver Support
Royalty-Free
Distribution License
7/Vista/XP/Server 2003/2000
Windows CE 6.0, 5.0, and 4.2
Example Applications
Upgrade
of RS-232 legacy devices to USB
of RS-485 legacy devices to USB
Cellular phone USB interface cable
PDA USB interface cable
USB to RS-232 serial adapter
Asynchronous Serial Data BUS (UART)
Upgrade
All
handshaking and modem interface signals
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 Mbps
576 Byte receive buffer; 640 byte transmit buffer
Hardware or X-On/X-Off handshaking supported
Four GPIO signals for status and control
Configurable I/O (1.8 V to VDD) using VIO pin
Data
RS-485
OS-X
Windows
Specification 2.0 compliant; full-speed (12 Mbps)
suspend states supported via SUSPEND pins
Configurable
®
7®/Vista®/XP®/Server 2003®/2000®
Linux
USB Function Controller
USB
with Existing COM Port PC Applications
Distribution License
Royalty-Free
Supply Voltage
Self-powered:
3.0 to 3.6 V
bus powered: 4.0 to 5.25 V
I/O voltage: 1.8 V to VDD
USB
Package
I/O (VDD to 5 V) using external pull-up
Lead
mode with bus transceiver control
free 28-pin QFN (5x5 mm)
Ordering Part Number
CP2103-GM
Temperature Range: –40 to +85 °C
CP2103
5
External
voltage supply
or direct
connection
to VDD
GPIO_0
VIO
GPIO_1
GPIO_2
4
7
REGIN
IN
GPIO_3
Voltage
Regulator
RST
OUT
6
2
8
USB
CONNECTOR
VBUS
DD+
GND
1
VDD
SUSPEND
GND
VBUS
RI
48 MHz
Oscillator
DCD
DTR
DSR
4
2
3
SUSPEND
3.3 V
3
DD+
USB
Transceiver
USB Function
Controller
4
5
6
1024B
EEPROM
UART
640B 576B
TX
RX
Buffer Buffer
TXD
RXD
RTS
CTS
19
18
17
(to external circuitry
for status and
control)
16
9
12
11
(to external circuitry
for USB suspend
states)
1
28
27
26
25
External RS-232
transceiver or
UART circuitry
24
23
22
Figure 1. Example System Diagram
Rev. 1.0 12/10
Copyright © 2010 by Silicon Laboratories
CP2103
