Acroprint ES700 Service Manual

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Brand: Acroprint

Category: Clock

Type: Service manual for Acroprint ES700

Pages: 57

Download Acroprint ES700 Service manual

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7-3
7-3. CPU
7-4. Port List
• 4-bit single-chip microcomputer µPD753108GC(NEC product)
• Equipped with 8,192 x 8 bit ROM and 512 x 4bit RAM
• Main system clock is a 4.19 MHz ceramic oscillator.
Subsystem clock is a 32.768 kHz crystal oscillator.
Equipped with LCD controller/driver.
P00/INT4
P01/SCK
P02/SO/SB0
P03/SI/SB1
P10/INT0
P11/INT1
P12/INT2/TI1/TI2
P13/TI0
P20/PT00
P21/PT01
P22/PCL/PT02
P23/BUZ
P30/LCDCL
P31/SYNC
P32
P33
P50
P51
P52
P53
P60/KR0
P61/KR1
P62/KR2
P63/KR3
S23/P80
S22/P81
S21/P82
S20/P83
S19/P90
S18/P91
S17/P92
S16/P93
25
26
27
28
29
30
31
32
33
34
35
36
5
6
7
8
10
11
12
13
14
15
16
17
37
38
39
40
41
42
43
44
PWF
PS
PB
-
ENC
-
SH
-
PIN9
-
-
BUZ
CR0
CR1
-
-
-
-
-
ESN
SEL
CHG
SET
-
PIN8
PIN7
PIN6
PIN5
PIN4
PIN3
PIN2
PIN1
Power failure detection
Paper Sensor
Key Top
Unused
CR encoder
Unused
Home position sensor
Unused
Pin9
Unused
Unused
Clock trimming
CR motor control 0
CR motor control 1
Unused
Unused
Unused
Unused
Unused
Sensor enable
SELECT switch
CHANGE switch
SET switch
Unused
Pin8
Pin7
Pin6
Pin5
Pin4
Pin3
Pin2
Pin1
Name No. of Pins I/O Function
I
I
I
I
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
O
O
O
O
O
O
O
O