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ER-A520U/ER-A530U CIRCUIT DIAGRAM AND PWB LAYOUT
– 24 –
A
B
C
D
87654
3
21
12345678
D
C
B
A A
B
C
D
87654
3
21
12345678
D
C
B
A A
B
C
D
87654
3
21
12345678
D
C
B
A A
B
C
D
87654
3
21
12345678
D
C
B
A
3/7
LCD I/F / KEY I/F
VCC:20pin
GND:10pin
D[0. .7]
KEY I/F R ELAY CN
*IC 14
TO POP UP & KEY I/F
g
KR6
LS2
a
f
LRS
c
KS0
LS3
KS2
e
LS1
LR/W#
KR8
g
a
c
d
KS1
dp
D[0..7]
VCC
KR0
KR3
FSR#
d
b
KR4
dp
KR7
LS0
KR1
KR2
GND
e
LE
MODE#
f
b
KR5
KR9
D0
D5
D4
D3
D0
D4
D2
D3
D1
D7
D2
D6
D4
D2
D1
D0
D6
D7
D6
D5
DB[0..7]
D1
D5
D3
D7
DB7
DB4
DB3
DB5
DB7
DB6
DB1
DB4
DB5
DB0
DB2
DB3
DB3
DB2
DB0
DB7
DB6
DB1
DB5
DB2
DB6
DB0
DB4
DB1
KS3
M_RESET#
KS01
FSR#1
A01,2,6
KR4#1
LE1
DATALE1
KS31
WR#1,2,6
A23#1,2
KR6#1
LCDON1
KR5#1
LEDS01
LEDS21
BLON1
LEDS31
KR7#1
LRS1
A221,2
LEDS11
LR/W#1
KR0#1
KS21
KR8#1
KR9#1
A211,2,6
KR1#1
KS11
MODE#1
D[0..7]1,2,6
KR2#1
A201,2,6
KR3#1
M_RESET#1
RES# 1,2
POFF# 1,2
VCC
VCC
VCC
VCC
VCC
VCC
VLED
VLED
VCC
VCC
C76
100pF
C80
100pF
IC12
74HC273
3
4
7
8
13
14
17
18
11
1
2
5
6
9
12
15
16
19
D1
D2
D3
D4
D5
D6
D7
D8
CLK
CLR
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
R106
10K
C82
0.1uF
+
C81
22uF/16V
R110
2.4KF
C73
0.1uF
R111
12K
C78
0.1uF
+
C77
10uF/50V
IC7C
74LV08
9
10
8
IC16
74HC245
1
2
3
4
5
6
7
9
10
8
20
19
18
17
15
16
14
13
12
11
DIR
A1
A2
A3
A4
A5
A6
A8
GND
A7
VCC
1G
B1
B2
B4
B3
B5
B6
B7
B8
+
C72
10uF/50V
R109
10K
+
C79
22uF/10V,OS
CN1
52045-4045
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
R108
10K
IC15
BA00ASFP
2
1
4
5
3
C75
0.1uF
R107
5.6K
CN2
LCD CN(16Pin)5483-16X
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
IC14
74HC138
1
2
3
4
5
6
7
8
16
9
10
11
12
13
14
15
A
B
C
G2A
G2B
G1
Y7
GND
VCC
Y6
Y5
Y4
Y3
Y2
Y1
Y0
+
C74
10uF/50V
IC13
74HC374
1
2
3
4
5
6
7
9
10
8
20
19
18
17
15
16
14
13
12
11
QE
Q0
D0
D1
Q1
Q2
D2
Q3
GND
D3
VCC
Q7
D7
D6
Q5
Q6
D5
D4
Q4
LE
C71
0.1uF