Pin
No.
Signal
name
In/
Out
Function
107
MCR2
—
Nu
108
WAIT
Out
Wait request signal
109
EXWAIT
In
External wait control input signal (NU)
+5V
110
RA18
Out
Nu
111
RA17
Out
Nu
112
GND
—
GND
113
RA16
Out
Nu
114
RA15
Out
Nu
115
RDO
Out
Expansion RD signal
Option
116
WRO
Out
Expansion WR signal
117
EXINT3
In
RS232C /CD interrupt
118
EXINT2
In
Option PWB (PULL UP)
119
EXINT1
In
RS232C /CI interrupt
120
EXINT0
In
Option PWB (PULL UP)
121
OPTCS
Out
Chip select base signal for expansion
option
122
ROS1
Out
ROM 1 chip select signal
123
ROS2
Out
ROM 2 chip select signal (NU)
124
RAS2
Out
RAM 2 chip select signal
125
RAS1
Out
RAM 1 chip select signal
126
RJRST
In
Printer reset signal
127
RJTMG
In
FOR TPRC (NU) +5V
128
DT4
Out
Printer dot signal 4 (NU)
129
DT3
Out
Printer dot signal 3 (NU)
130
DT2
Out
Printer dot signal 2 (NU)
131
DT1
Out
Printer dot signal 1 (NU)
132
GND
—
GND
133
DT7
Out
Printer dot signal 7 (NU)
134
DT6
Out
Printer dot signal 6 (NU)
135
DT5
Out
Printer dot signal 5 (NU)
136
MTD
Out
Printer motor drive signal (NU)
137
MTD
Out
Printer motor drive signal (NU)
138
DOT9
Out
Printer dot signal 9 (NU)
139
DOT8
Out
Printer dot signal 8 (NU)
140
SYNC
—
Nu (+5V)
141
ASKRX
—
I/R input from I/R unit (NU) Pull-up
142
VCC
—
+5V
143
GND
—
GND
144
—
—
Nu
145
RAS3
Out
Nu
146
RJMTR
In
Printer motor lock detection signal (NU)
GND
147
SLMTD
Out
Nu
148
SLMTS
Out
Nu
149
SLMTR
In
GND
150
HTS2
Out
Serial output to FMC unit
151
SCK2
Out
Serial clock to FMC unit
152
STH2
In
Serial input to FMC unit
153
—
—
Nu
154
—
—
Nu
155
—
—
Nu
156
—
—
Nu
157
—
—
Nu
158
LCDWT
IN
TPRC wait signal
159
DOTEN
Out
Dot drive enable signal (Nu)
160
RASP
—
Nu
2-3. CKDC8
1) Pin configulation
2) Pin assignment (CKDC8)
Pin
No.
SYMBOL
SIGNAL
NAME
IN/
OUT
FUNCTION
1
DP
DP
OUT DISPLAY SEGMENT Dp
2
A
SA
OUT DISPLAY SEGMENT a
3
B
SB
OUT DISPLAY SEGMENT b
4
C
SC
OUT DISPLAY SEGMENT c
5
D
SD
OUT DISPLAY SEGMENT d
6
E
SE
OUT DISPLAY SEGMENT e
7
F
SF
OUT DISPLAY SEGMENT f
8
G
SG
OUT DISPLAY SEGMENT g
9
VSS0
GND
GND
10
VDD0
VDD
VDD
11
KR4
KR4
IN
KEY RETURN 4
12
KR10
KR10
IN
KEY RETURN (feed clerk
MRS sw)
13
KR11
KR11
IN
KEY RETURN (MODE sw)
14
KR8
NU
IN
GND
15
HTS
HTS
IN
16
STH
STH
OUT
17
/SCK
/SCK
IN
SHIFT CLOCK
18
ST0
ST0
OUT KEY STROBE 0
19
ST1
ST1
OUT KEY STROBE 1
20
ST2
ST2
OUT KEY STROBE 2
21
ST3
ST3
OUT KEY STROBE 3
22
ST4
ST4
OUT KEY STROBE 4
23
ST5
ST5
OUT KEY STROBE 5
24
VDD1
VDD
VDD
25
AXSS
GND
GND
26
KR9
NU
GND
27
KR0
KR0
IN
KEY RETURN 0
28
KR1
KR1
IN
KEY RETURN 1
29
KR2
KR2
IN
KEY RETURN 2
30
KR3
KR3
IN
KEY RETURN 3
31
KR5
KR5
IN
KEY RETURN 5
NU
NU
G10
G9
G8
G7
G6
G5
G4
G3
G2
G1
BUZ
/POFF
NU
ST8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DP
SA
SB
SC
SD
SE
SF
SG
GND
VDD
KR4
KR10
KR11
NU
HTS
STH
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
ST7
ST6
/RESETS
/SHEN
ERC
LDRQ
GND
GND
/RES0
VDD
GND
KR7
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
/SCK
ST0
ST1
ST2
ST3
ST4
ST5
VDD
GN
D
NU
KR0
KR1
KR2
KR3
KR5
KR6
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
CKDC8
4 – 8
Summary of Contents for ER-A450T
Page 56: ...2 MAIN PWB LAYOUT 1 SIDE A ...
Page 57: ... 2 SIDE B ...
Page 59: ...4 FRONT DISPLAY PWB LAYOUT 5 POP UP DISPLAY PWB LAYOUT ...
Page 61: ...7 PS PWB LAYOUT ...