
4-8 System Expansion 957096 LogBook User’s Manual
P2 Digital I/O
Pin Signal Name Description for P2 Pin Use
1 IR INPUT Interrupt line input (no functions to access this)
2 IR ENABLE Interrupt line enable (no functions to access this)
3 PORT B 7 Digital input/output – port B bit 7
4 PORT B 6 Digital input/output – port B bit 6
5 PORT B 5 Digital input/output – port B bit 5
6 PORT B 4 Digital input/output – port B bit 4
7 PORT B 3 Digital input/output – port B bit 3
8 PORT B 2 Digital input/output – port B bit 2
9 PORT B 1 Digital input/output – port B bit 1
10 PORT B 0 Digital input/output – port B bit 0
11 GND Digital ground
12 N/C Pin not connected/not used
13 GND Digital ground
14 N/C Pin not connected/not used
15 GND Digital ground
16 N/C Pin not connected/not used
17 GND Digital ground
18 +5 V +5 V supply @ 0.100 A
19 GND Digital ground
20 +5 V +5 V supply @ 0.100 A
21 GND Digital ground
22 PORT C 7 Digital input/output – port C bit 7
23 PORT C 6 Digital input/output – port C bit 6
24 PORT C 5 Digital input/output – port C bit 5
25 PORT C 4 Digital input/output – port C bit 4
26 PORT C 3 Digital input/output – port C bit 3
27 PORT C 2 Digital input/output – port C bit 2
28 PORT C 1 Digital input/output – port C bit 1
29 PORT C 0 Digital input/output – port C bit 0
30 PORT A 7 Digital input/output – port A bit 7
31 PORT A 6 Digital input/output – port A bit 6
32 PORT A 5 Digital input/output – port A bit 5
33 PORT A 4 Digital input/output – port A bit 4
34 PORT A 3 Digital input/output – port A bit 3
35 PORT A 2 Digital input/output – port A bit 2
36 PORT A 1 Digital input/output – port A bit 1
37 PORT A 0 Digital input/output – port A bit 0
Note: No local lines are available if digital expansion cards are in use.
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