Casio PA-2400U, Service Manual And Parts List

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N o . Pin Name I n / O u t Function To/From
1 D27 I/O Data bus
2 D26 I/O Data bus
3 D25 I/O Data bus
4 D24 I/O Data bus
5 D23/Port 7 I/O Data bus
6 Vss GND
7 Vcc +3.3V source
8 D22/Port 6 I/O Data bus
9 D21/Port 5 I/O Data bus
10 D20/Port 4 I/O Data bus
11 D19/Port 3 I/O Data bus
12 D18/Port 2 I/O Data bus
13 D17/Port 1 I/O Data bus
14 D16/Port 0 I/O Data bus
15 D15 I/O Data bus
16 D14 I/O Data bus
17 Vss GND
18 Vcc +3.3V source
19 Vss GND
20 Vcc +3.3V source
21 D13 I/O Data bus
22 D12 I/O Data bus
23 D11 I/O Data bus
24 D10 I/O Data bus
25 D9 I/O Data bus
26 D8 I/O Data bus
27 D7 I/O Data bus
28 D6 I/O Data bus
29 D5 I/O Data bus
30 Vss GND
31 Vcc +3.3V source
32 D4 I/O Data bus
33 D3 I/O Data bus
34 D2 I/O Data bus
35 D1 I/O Data bus
36 D0 I/O Data bus
37 A0 O Address bus
38 A1 O Address bus
39 A2 O Address bus
40 A3 O Address bus
41 Vss GND
42 Vcc +3.3V source
43 A4 O Address bus
44 A5 O Address bus
45 A6 O Address bus
46 A7 O Address bus
47 A8 O Address bus
48 A9 O Address bus
49 Vss GND
50 Vcc +3.3V source
51 A10 O Address bus
52 A11 O Address bus
53 A12 O Address bus
54 Vss GND
55 Vcc +3.3V source
56 A13 O Address bus
57 A14 O Address bus
LSI/IC DATA
SH-7093 (CPU / IC1)