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Pin No.
Pin Name
121
CLK
122
XWAT
123
A0
124
A1
125
A2
126
A3
127
A4
128
A5
129
A6
130
VSS
131
D0
132
D1
133
D2
134
D3
135
D4
136
D5
137
D6
138
D7
139
NC
140
VDD
141
INT
142
XCS
143
XWR
144
XRD
I/O
I
Clock output (Not used)
I
Access wait signal input from sub CPU buffer memory
I
I
I
I
Address bus input for built-in register
I
I
I
—
Ground
I/O
I/O
I/O
I/O
Data bus input/output with sub CPU
I/O
I/O
I/O
I/O
—
Not used
—
+5V power supply
O
Interrupt request signal output to CPU
I
Chip select signal input
I
Built-in register writing strobe signal input from CPU
I
Built-in register out strobe signal input from CPU
7-10
Function
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