cp2103 Silicon Laboratories, cp2103 Datasheet - Page 7

• Manufacturer Part Number: cp2103
• Description: Single-chip Usb To Uart Bridge
• Manufacturer: Silicon Laboratories

4. Pinout and Package Definitions
*Note: Pins can be left unconnected when not used.
SUSPEND
SUSPEND
GPIO.3
GPIO.2
GPIO.1
GPIO.0
REGIN
SGND
Name
VBUS
GND
DCD
RXD
DSR
DTR
RST
TXD
CTS
RTS
V
V
NC
D+
D–
RI
DD
IO
10, 13–15,
20–21
Pin #
22*
23*
26*
27*
28*
12*
11*
25
24
16
17
18
19
1*
6
5
2
9
7
8
3
4
Power Out
Power In
Power In
Power In
D Out
D Out
D Out
D Out
D Out
D I/O
D I/O
D I/O
D I/O
D I/O
D I/O
D I/O
Type
D In
D In
D In
D in
D In
D In
Table 6. CP2103 Pin Definitions
Preliminary Rev. 0.3
3.0–3.6 V Power Supply Voltage Input.
3.3 V Voltage Regulator Output. See
1.8 V to V
Ground. Must be tied to ground.
Ground. Must be tied to ground.
Device Reset. Open-drain output of internal POR or V
external source can initiate a system reset by driving this pin low for
at least 15 µs.
5 V Regulator Input. This pin is the input to the on-chip voltage regu-
lator.
VBUS Sense Input. This pin should be connected to the VBUS sig-
nal of a USB network. A 5 V signal on this pin indicates a USB net-
work connection.
USB D+
USB D–
Asynchronous data output (UART Transmit)
Asynchronous data input (UART Receive)
Clear To Send control input (active low)
Ready to Send control output (active low)
Data Set Ready control input (active low)
Data Terminal Ready control output (active low)
Data Carrier Detect control input (active low)
Ring Indicator control input (active low)
This pin is driven high when the CP2103 enters the USB suspend
state.
This pin is driven low when the CP2103 enters the USB suspend
state.
These pins should be left unconnected or tied to V
User-configurable input or output.
User-configurable input or output.
User-configurable input or output.
User-configurable input or output.
DD
I/O Supply Voltage Input.
Description
Section
10.
DD
DD
.
monitor. An
CP2103
7