CP2101
Single-Chip USB to UART Bridge
Single-Chip USB to UART Data Transfer
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Integrated USB Transceiver; No External Resistors
-
-
-
-
Required
Integrated Clock; No External Crystal Required
Integrated 512-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
Virtual COM Port Device Drivers
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Works with Existing COM Port PC Applications
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Royalty-Free Distribution License
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Windows Vista/XP/Server 2003/2000/98SE
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Mac OS-X/OS-9
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Linux 2.40
USBXpress™ Direct Driver Support
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Royalty-Free Distribution License
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Windows Vista/XP/Server 2003/2000
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Windows CE 6.0, 5.0, and 4.2
Example Applications
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Upgrade of RS-232 Legacy Devices to USB
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Cellular Phone USB Interface Cable
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PDA USB Interface Cable
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USB to RS-232 Serial Adapter
Supply Voltage
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Self-powered: 3.0 to 3.6 V
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USB Bus Powered: 4.0 to 5.25 V
Package
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Pb-free 28-pin QFN (5 x 5 mm)
Ordering Part Number
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CP2101-GM
Temperature Range: -40 to +85 °C
Note:
The CP2101 is a mature product and is not rec-
ommended for new designs. The CP2102 is a pin and
software compatible alternative for the CP2101. The
CP2102 is recommended for all new designs.
USB Function Controller
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USB Specification 2.0 Compliant; Full Speed
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(12 Mbps)
USB suspend states supported via SUSPEND pins
Asynchronous Serial Data BUS (UART)
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All Handshaking and Modem Interface Signals
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Data Formats Supported:
•
Data Bits: 8
•
Stop Bits: 1
•
Parity: Odd, Even, No Parity
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Baud Rates: 300 bps to 921.6 kbps
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512 Byte Receive Buffer; 512 Byte Transmit Buffer
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Hardware or X-On / X-Off Handshaking Supported
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Event Character Support
7
REGIN
IN
Voltage
Regulator
OUT
CP2101
RST
SUSPEND
9
12
11
VDD
6
VDD
GND
3.3 V
(to external circuitry
for USB suspend
states)
SUSPEND
3
RI
2
1
28
27
26
25
24
23
8
USB
CONNECTOR
VBUS
D–
D+
GND
6
5
1
2
3
VBUS
48 MHz
Oscillator
DCD
DTR
DSR
TXD
RXD
RTS
CTS
External RS-232
transceiver or
UART circuitry
5
4
D–
D+
4
USB
Transceiver
USB Function
Controller
512B
EEPROM
512B 512B
TX
RX
Buffer Buffer
UART
D1 D2 D3
Example System Diagram
Rev. 1.8 5/07
Copyright © 2007 by Silicon Laboratories
CP2101
SILABS [ SILICON LABORATORIES ]
