Casio EX-468

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5-7-3. Pin Function
PIN NO. PIN NAME I/O DESCRIPTION
1 VCC-RTC - RTC power supply (1.9 V)
2 XTAL2 O On-chip RTC crystal oscillator pin
3 EXTAL2 IN On-chip RTC crystal oscillator pin
4 Vcc-RTC - RTC power supply (0 V)
5 D31/PTB[7] IO Data bus / input/output port B
6 D30/PTB[6] IO Data bus / input/output port B
7 D29/PTB[5] IO Data bus / input/output port B
8 D28/PTB[4] IO Data bus / input/output port B
9 D27/PTB[3] IO Data bus / input/output port B
10 D26/PTB[2] IO Data bus / input/output port B
11 VssQ - Input/output power supply (0 V)
12 D25/PTB[1] IO Data bus / input/output port B
13 VccQ - Input/output power supply (3.3 V)
14 D24/PTB[0] IO Data bus / input/output port B
15 D23/PTA[7] IO Data bus / input/output port A
16 D22/PTA[6] IO Data bus / input/output port A
17 D21/PTA[5] IO Data bus / input/output port A
18 D20/PTA[4] IO Data bus / input/output port A
19 Vss - Internal power supply (0 V)
20 D19/PTA[3] IO Data bus / input/output port A
21 Vcc - Internal power supply (1.9 V)
22 D18/PTA[2] IO Data bus / input/output port A
23 D17/PTA[1] IO Data bus / input/output port A
24 D16/PTA[0] IO Data bus / input/output port A
25 VssQ - Input/output power supply (0 V)
26 D15 IO Data bus
27 VccQ - Input/output power supply (3.3 V)
28 D14 IO Data bus
29 D13 IO Data bus
30 D12 IO Data bus
31 D11 IO Data bus
32 D10 IO Data bus
33 D9 IO Data bus
34 D8 IO Data bus
35 D7 IO Data bus
36 D6 IO Data bus
37 VssQ - Input/output power supply (0 V)
38 D5 IO Data bus
39 VccQ - Input/output power supply (3.3 V)
40 D4 IO Data bus
41 D3 IO Data bus
42 D2 IO Data bus
43 D1 IO Data bus
44 D0 IO Data bus
45 A0 O Address bus
46 A1 O Address bus
47 A2 O Address bus
48 A3 O Address bus
49 VssQ - Input/output power supply (0 V)
50 A4 O Address bus
51 VccQ - Input/output power supply (3.3 V)
52 A5 O Address bus
53 A6 O Address bus
54 A7 O Address bus
55 A8 O Address bus
56 A9 O Address bus
57 A10 O Address bus
58 A11 O Address bus
59 A12 O Address bus