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3) Pin Assignment
KEYBOARD
re Port
| VO
/Signai name}
Notes
laa Pot
| ¥O a
name,
Notes
io}
B
SEG-B
33)
R72
| 0
SRES
SYSTEM RESET
oO
c
SEG-C
"IRB
|} O
-
°°
D
SEG-D
35}
Reo
| O
-
NOT USE
o{
ec
| sae
sefra
fo}
—
oF
SEG-F
37| R90 | | | ASO | KEY RETURNINPUT trom KEY UNIT
o}
«4
| stec
ge{Ror
|| | R81 | KEY RETURNINPUT trom KEY UNIT
oo]
- | Norusep
ge} Roe | 1 | R93
| KEY RETURNINPUT from KEY UNIT
of
-
NOT USE
ao{ nes | 1 | R93" | KEY RETURN INPUT from KEY UNIT
o|-
41 (RESET| 1 | RESET | CKOCMN
RESET
ce}
DP
DP
42)
OSC2}
1
4.19MHz OSC
°
0
43 | osci] | |
MODE RETURN trom KEY BOARD UNIT
44 | ano} —
GND
'CLEARK, FEED, SWITCH: RETURN from
45 iS
i
32.768KHz Xtal
NOT USE
P-OFF signal input
7STOP request signal from HOST CPU input
/SHENoutput
'ARQ output
+5V
NOT USED
7SEG DIG1
7SEG DIG2
7SEG DIGS
7SEG DIG4
Power supply
ASCK input
HTS.
7SEG DIGS
7SEG DIGS
TSEG DIG7
'STH
Ge
7SEG DiG8
NOT USED
Go
7SEG DIGS
BUZZER
A
SEG-A
NOT USE
—23-
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