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Pin No.
Signal
109, 110
S1, S2
111 ~ 205
S3 ~ 96
206
DUMMY
207, 208
XI, XO
209
DUMMY
210, 211
PO, PI
212
DUMMY
213
PORT2
214
PORT3
215 ~ 217
PORT4 ~ 6
218
PORT7
219 ~ 222
OPT2 ~ 5
2. RAM (LC3564QM-85)
Pin No.
Signal
1
NC
2 ~ 10
A0 ~ 7, A12
11 ~ 13
I/O 0 ~ 2
14
GND
15 ~ 19
I/O 3 ~ 7
20
CE
21
A10
22
OE
23 ~ 25
A8, 9, 11
26
CE2
27
WE
28
VCC
In/Out
_
Not used
Out
Segment signal for display
_
Not used
In/Out
Clock terminal (DT-26S)
_
Not used
In/Out
Main clock terminal (3.45MG)
_
Not used
_
Not used
_
Interrupt port
In/Out
For data communication
_
Interrupt port
_
Not used
In/Out
_
No connect
In
Address bus
In/Out
Data bus
In
GND / 0[V]
In/Out
Data bus
In
Chip enable signal
In
Address bus
In
Output enable signal
In
Address bus
In
Chip enable signal
In
Write enable signal
In
Power supply / 3[V]
— 15 —
Function
Function
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