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Pin No.
Pin Name
49
ED16
50
ED1
51
ED17
52
ED2
53
VDD
54
VSS
55
ED18
56
ED3
57
ED19
58
ED4
59
ED20
60
ED5
61
ED21
62
VSS
63
ED6
64
ED22
65
ED7
66
ED23
67
ED8
68
ED24
69
ED9
70
VSS
71
ED25
72
ED10
73
ED26
74
ED11
75
ED27
76
ED12
77
ED28
78
VDD
79
VSS
80
ED13
81
ED29
82
ED14
83
ED30
84
ED15
85
ED31
86
XOE
87
VSS
88
CAS
89
XWE
90
RAS
91 to 94
EA0 to EA3
95
VSS
96 to 99
EA4 to EA7
100
EA8
I/O
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
—
Power supply terminal (+5V)
—
Ground terminal
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
—
Ground terminal
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
—
Ground terminal
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
—
Power supply terminal (+5V)
—
Ground terminal
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
I/O
Two-way data bus with the external RAM device Not used
I/O
Two-way data bus with the memory (IC503)
O
Output enable signal output to the memory (IC503)
—
Ground terminal
O
Column address strobe signal output to the memory (IC503)
O
Write enable signal output to the memory (IC503)
O
Row address strobe signal output to the memory (IC503)
O
Address signal output to the memory (IC503)
—
Ground terminal
O
Address signal output to the memory (IC503)
O
Address signal output to the external RAM device Not used (open)
Function
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