Panasonic WJ-FS28 Service Manual page 30

1.20.
IC910 on the Main Board is using the 8-Bit Single Chip Microprocessor IC YW38004E8118.
Description of this IC is as follows:
Pin Name I/O
1 P62 I/O P62 signal input/output terminal.
2 P61 I/O P61 signal input/output terminal.
3 P60 I/O P60 signal input/output terminal.
4 P57 I/O P57 signal input/output terminal.
5 P56 I/O P56 signal input/output terminal.
6 P55 I/O P55 signal input/output terminal.
7 P54 I/O P54 signal input/output terminal.
8 P53 I/O P53 signal input/output terminal.
9 P52 I/O P52 signal input/output terminal.
10 P51 I/O P51 signal input/output terminal.
11 P50 I/O P50 signal input/output terminal.
12 P47 I/O P47 signal input/output terminal.
13 P46 I/O P46 signal input/output terminal.
14 P45 I/O P45 signal input/output terminal.
15 P44 I/O P44 signal input/output terminal.
16 P43 I/O P43 signal input/output terminal.
17 P42 I/O P42 signal input/output terminal.
18 CNVss – Ground terminal.
19 RST I Reset Pulse input terminal.
20 P41 I/O P41 signal input/output terminal.
21 P40 I/O P40 signal input/output terminal.
22 XIN I
Crystal Oscillator Connecting
terminals.
23 XOUT O
24 Vss – Ground terminal.
RD 49
WT 50
P35 51
P34 52
P32 53
P32 54
P31 55
P30 56
Vcc 57
P71 58
P70 59
P67 60
P66 61
P65 62
P64 63
P63 64
Description
(TOP VIEW)
Pin Name
25 P27
26 P26
27 P25
28 P24
29 P23
30 P22
31 P21
32 P20
33 P15
34 P14
35 P13
36 P12
37 P11
38 P10
39 P9
40 P8
41 P7
42 P6
43 P5
44 P4
45 P3
46 P2
47 P1
48 P0
27
32 P20
31 P21
30 P22
29 P23
28 P24
27 P25
26 P26
25 P27
24 Vss
23 XOUT
22 XIN
21 P40
20 P41
19 RST
18 CNVss
17 P43
I/O Description
I/O
I/O
I/O
I/O
Data input/output terminals. (8-Bit)
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
Address signal output terminals.
(16-Bit)
O
O
O
O
O
O
O
O