Datasheet

Pin # Signal Name
1 NC
2 TXD0
3 RXD0
4 NC (not connected
through R14 to pin 6)
5 GND
6 NC (not connected
through R14 to pin 4)
7 NC (not connected
through R13 to pin 8)
8 NC (not connected
through R13 to pin 7)
9 NC
TXD0 Output Transmit Data. This is the asynchronous serial data output (RS232) for the shift
register on the UART controller.
RXD0 Input Receive Data. This is the asynchronous serial data input (RS232) for the shift register
on the UART controller.
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