9
-4
S
A
M
4
S
E
R
-1
8
0
S
E
R
IE
S
A
B
a
a
f
b
f
b
g
g
d
dp
d
dp
a
f
b
f
b
g
g
d
d
1.0
3
of
3
C
D
VFD_SEG#6(F)
VFD_SEG#3(C)_IN
VFD_SEG#1(A)
VFD_SEG#4(D)_IN
VFD_SEG#3(C)
VFD_SEG#7(G)
VFD_SEG#2(B)
VFD_SEG#5(E)
VFD_SEG#8(DP)
VFD_SEG#4(D)
VFD_SEG#7(G)_IN
VFD_SEG#8(DP)_IN
VFD_SEG#2(B)_IN
VFD_SEG#5(E)_IN
2
MAX 320mA
VFD_GRD#8_OUT
R4
10K
a
VFD_GRD&KEYSCAN#6
VFD_GRD&MODESCAN#7
VFD_GRD#7_OUT
VFD_GRD#8_OUT
VFD_GRD#6_OUT
VFD_SEG#4(D)_IN
VFD_GRD#4_OUT
R7
10K
dp
dp
VFD_GRD#6_OUT
VFD_SEG#5(E)_IN
VFD_GRD#5_OUT
VFD_SEG#2(B)_IN
VFD_GRD#5_OUT
VFD_GRD#4_OUT
VFD_GRD#2_OUT
VFD_SEG#3(C)_IN
R5
10K
VFD_SEG#1(A)_IN
VFD_GRD#3_OUT
VFD_GRD&KEYSCAN#2
VFD_GRD&KEYSCAN#3
VFD_GRD#3_OUT
VFD_GRD#2_OUT
R10
10K
VFD_GRD#1_OUT
Size
ER-180
Rev
File Name
DISPLAY BOARD
1
CN4:A
4
CN4:D
7
CN4:G
10
CN4:J
13
CN4:M
16
CN4:P
TITLE :
ER-180 MAIN.SCH
Sheet
e
c
e
8DIG
c
3
c
c
4
S
E
G
#
B
S
E
G
#
A
S
E
G
#
D
S
E
G
#
C
S
E
G
#
F
S
E
G
#
E
S
E
G
#
D
P
S
E
G
#
G
S
E
G
#
B
S
E
G
#
A
S
E
G
#
D
S
E
G
#
C
S
E
G
#
F
S
E
G
#
E
S
E
G
#
D
P
S
E
G
#
G
B
C
ACTIVE: 'HIGH'
VFD_SEG#6(F)_IN
ACTIVE: 'HIGH'
VFD_SEG#1(A)_IN
2
3
1
MMBT2222A
Q5
2
3
1
MMBT2222A
Q8
1DIG
1
1
11
VFD_GRD#8
VFD_GRD&KEYSCAN#5
R8
10K
R6
10K
GRD#1
e
e
GRD#8
VFD_GRD#1_OUT
VFD_SEG#6(F)_IN
VFD_GRD#7_OUT
VFD_SEG#8(DP)_IN
3
VFD_GRD&KEYSCAN#1
VFD_GRD&KEYSCAN#4
R11
10K
GRD#1
.
VFD_SEG#7(G)_IN
R9
10K
A3
4
Date
D
H.T JANG
FND SEGMENT CONTROL
FND DIGIT CONTROL
16
16
16
16
1
3
2
Q13
KSA708-Y
FND DIGIT & SEGMENT CONTROL
1
3
2
Q15
KSA708-Y
11
CN4:K
8
CN4:H
5
CN4:E
6
CN4:F
3
CN4:C
2
CN4:B
9
CN4:I
1K
RA3
1
3
2
Q12
KSA708-Y
1
3
2
Q16
KSA708-Y
.
GRD#8
14
CN4:N
15
CN4:O
DISPLAY(FND) BLOCK
2010.01.28
Drawn by
DISPLAY INTERFACE CONN.
Shin Heung Precision Co., Ltd.
1
2
M
A
X
4
0
m
A
M
A
X
4
0
m
A
2
3
1
MMBT2222A
Q2
2
3
1
MMBT2222A
Q3
2
3
1
MMBT2222A
Q4
2
3
1
MMBT2222A
Q1
.
.
1
2
3
1
MMBT2222A
Q6
2
3
1
MMBT2222A
Q7
.
4.7K
RA2
4.7K
RA1
.
1K
RA4
VDD50V
1
3
2
Q10
KSA708-Y
1
3
2
Q9
KSA708-Y
1
3
2
Q14
KSA708-Y
.
12
CN4:L
1
3
2
Q11
KSA708-Y
Summary of Contents for ER-180
Page 10: ...2 Product Specifications 2 4 SAM4S ER 180 SERIES Memo...
Page 26: ...4 Assembly and Disassembly 4 2 SAM4S ER 180 SERIES Memo...
Page 50: ...6 PCB Layout and Parts List 6 6 SAM4S ER 180 SERIES Memo...
Page 52: ...7 Block Diagram 7 2 SAM4S ER 180 SEREIS Memo...
Page 67: ...Shin Heung Precision March 2010 Printed in KOREA V1 0 Code No JK68 70129A...