Datasheet

7 SCK
8 GND
9 PDO
10 GND
This connector allows programming via AVR-PG1, AVR-PG2 or other
compatible tool.
PDI Input Program Data In. This pin is serial data input for the MCU.
PDO OutputProgram Data Out. This pin is serial data output from the MCU.
SCK I/O Serial (Synchronization) Clock. This is the synchronization signal.
DB9-RS232:
Pin # Signal Name
1 NC
2 TXD
3 RXD
4 NC
5 GND
6 NC
7 NC
8 NC
9 NC
TXD OutputTransmit Data. This is the asynchronous serial data output for the RS232
interface.
RXD Input Receive Data. This is the asynchronous serial data input for the RS232
interface.
RS232:
Pin # Signal Name
1 TXD
2 RXD
3 GND