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Signal description (uPD 75208)
Pin name
POO/INT4
PO1 SCK
POQ2 SO
PO3/SI
P10/INTO
PIT1/INT1
P12/INT2
P13/TIO
P20
P21
P22
P23/BUZ
P30
P31
P32
P33
P60
P61
P62
P63
P40
P41
P42
P43
PPO
x1
X2
Vss
XTI1
XT2
P50
PS1
P52
T9
T10/PH3
T11/PH2
T12/PH1
T13/PHO
T14/S11
T15/S10
VLOAD
VPRE
sg
$8
$7
$6
$5
$4
VoD
Signal name
at a)
2 OQ
VEL
VPRE
Sa
Sb
Sc
Sd
| 7~o000
1ooo0o!loooooooooTt1ilttittitt+
|+oooo0orTr------|
o0001---1
Description
Segment signal
o"
ow
Power down signal
Not use
a
oe
Timing pulse
Timing auxiliary pulse
Reset pulse
Not use
Key scan signal
"
"
Not use
Key return signal
Buzzer signal
Main clock
"ow
OV
Sub clock
Not use
wo
Power on reset signal
Digit signal
Drawer open signal
Rewind motor drive signal
Printer Motor Signal
Printer Solenoid Signal
Not use
Not use
—23V
—3.6V
Not use
ow
Segment signal
}
|
Not use
|
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