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DPX-6020
QQ
MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
(X25-)IC4:Panel µ-com
Pin
Pin Name
58
NC
59
Vcc
60~62
NC
63
RD
64
NC
65~68
NC
69
CS0
70,71
NC
72
A20
73
A19
74
Vcc
75
A18
76
Vss
77~85
A17~A9
86~90
NC
91
Vcc
92
A8
93
Vss
TE
L 13942296513
94~100
A7~A1
101
NC
102~113
D15~D4
114~118
NC
119~122
D3~D0
123
NC
124~128
KS0~KS4
129
KR5
130
Vss
131
NC
132
Vcc
133
NC
134
KR0
135
PON
136
NC
137~139
KR1~KR3
140
Avss
141
KR4
142
Vref
www
143
Avcc
144
NC
8
I/O
O
Not used.
-
Power source terminal
O
Not used.
O
External memory read request
-
O
Not used.
O
External ROM CE terminal
O
Not used.
O
External bus ADDR 20
O
External bus ADDR 19
-
Power source terminal
O
External bus ADDR 18
-
GND terminal
O
External bus ADDR 17~9
O
Not used.
-
Power source terminal
O
External bus ADDR 8
-
GND terminal
O
External bus ADDR 7~1
O
Not used.
I/O
External bus DATA 15~4
O
Not used.
I/O
External bus DATA 3~0
O
Not used.
O
Key scan output 0~4
I
Key return signal input 5
-
GND terminal
O
Not used.
-
Power source terminal
O
Not used.
I
Key return signal input 0
O
Power source control terminal
O
Not used.
I
Key return signal input 1~3
-
GND terminal
I
Key return signal input 4
-
-
Power source terminal
x
ao
I
Not used.
y
.
i
8
Description
Q Q
3
6 7
1 3
u163
.
2 9
9 4
2 8
Processing Operation
L : Fixed.
L : Fixed.
L : Read
L : Fixed.
L : Fixed.
L : External ROM selection
H : Fixed
L : Fixed.
1 5
0 5
8
2 9
9 4
L : Fixed.
L : Fixed.
L : Fixed.
L : Fixed.
L : Fixed.
H : POWER ON
L : Fixed
m
co
9 9
2 8
9 9
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