3. UC232R Pin Out and Signal Descriptions
3.1 UC232R Pin Out
Page 6
DCD
1
RXD
2
TXD
3
DTR
4
GND
5
DSR
6
RTS
7
CTS
8
RI
9
Figure 2 - UC232R RS232 (DB9) Pin Out
3.2 RS232 Signal Descriptions
Table 1 - RS232 Signals
DB9 pin No. Name
1
2
3
4
5
6
7
8
9
DCD
RXDATA
TXDATA
DTR
GND
DSR
RTS
CTS
RI
Type
Input
Input
Output
Output
GND
Input
Output
Input
Input
Description
Data Carrier Detect control input
Receive Asynchronous Data input.
Transmit Asynchronous Data output.
Data Terminal Ready control output / Handshake signal
Device groud supply pin.
Data Set Ready control input / Handshake signal
Request To Send Control Output / Handshake signal.
Clear to Send Control input / Handshake signal.
Ring Indicator control input. When remote wakeup is enabled in the FT232RL’s internal
EEPROM taking RI# low can be used to resume the PC USB host controller from suspend.
UC232R “ChiPi” Minimum Component FT232RL USB to RS232 Converter Cable
Datasheet Version 0.90
© Future Technology Devices International Ltd. 2005
FTDI [ FUTURE TECHNOLOGY DEVICES INTERNATIONAL LTD. ]
