Datasheet

EXT2:
Pin # Signal Name
1 GND
2 +5V
3 PG0/WR
4 PG1/RD
5 PG2/ALE
6 SS
7 MOSI
8 MISO
9 OC0
10 OC1A
11 OC1B
12 OC2/OC1C
13 PC3/A11
14 PA7/AD7
PWR:
Pin # Signal Name
1 PWR
2 GND
You should apply 9 VAC or +12VDC on pin 1.