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I IC DATA
IC1 : µPD16312GB-3B4 (OPERATION P.C.B.)
TE
L 13942296513
D
IN
D
OUT
CLK
STB
V
DD
R
Key
1
to
4
Key
4
www
SW
1
to
4
SW
4
.
http://www.xiaoyu163.com
SW
1
1
SW
2
2
SW
3
3
SW
4
4
D
5
OUT
6
D
IN
Vss
7
8
CLK
STB
9
KEY
10
1
KEY
11
2
Command decoder
Display memory
Serial I/F
16 bits x 11 words
Timing generator key scan
OSC
Key data memory (4 x 6)
4-bit latch
4-bit
x
ao
y
latch
LED
LED
1
4
i
Key data memory (4 x 6)
http://www.xiaoyu163.com
8
Q Q
3
6 7
1 3
Dimming circuit
16-bit
16
output
latch
5
11-bit
shift
5
register
11
u163
V
DD
(+5 V)
.
2 9
9 4
2 8
33
Grid
5
Grid
32
6
31
Seg
/Grid
16
7
Seg
/Grid
30
15
8
29
Seg
/Grid
14
9
Seg
/Grid
28
13
10
27
V
EE
Seg
/Grid
26
12
11
25
Seg
11
24
Seg
10
Seg
23
9
1 5
0 5
8
2 9
9 4
Seg
1
Seg-
11
ment
driver
Seg
11
Seg
12
5
Data
selector
Seg
16
Grid
1
Grid
driver
6
Grid
6
m
co
V
V
SS
EE
(0V)
(-30 V)
DVD-S30
9 9
2 8
9 9
/Grid
11
/Grid
7
25
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