Rabbit OP7100 User Manual Page 35

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OP7100 Hardware
35
Digital I/O
The OP7100 has eight CMOS/TTL-level digital inputs and eight CMOS/
TTL-level digital outputs. The digital inputs are provided with pullup
resistors, shown in Figure 3-12, to provide a known state before a digital
input is applied..
Figure 3-12. OP7100 Digital Inputs
The digital I/O are located on header J7, and are available through a con-
nector on the outside of the OP7100 back cover. Figure 3-13 shows the
pinout and the location of header J7.
Figure 3-13. OP7100 Header J7
10 k
+5 V
+5 V
To Z180
Data
Bus
CMOS
Input
DIN[07]
10 12
J7
1
2
3
4
5
6
7
8
9
11 13
15
17 19
14 16
18
20
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
DIN0
DIN1
DIN2
DIN3
DIN4
DIN5
DIN6
DIN7
VCC
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
22
24
26
28
30
32
34
21
23
25
27
29 31 33
J7
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