Panasonic WJ-FS28 Service Manual page 29

1.19.
IC907 on the Main Board is using the 8K-word x 8-Bit CMOS S-RAM IC YWLH5168N80L.
Description of this IC is as follows:
N.C. 1
A12 2
A7 3
A6 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
I/O1 11
I/O2 12
I/O3 13
GND 14
A3 7
A9
24
A8 25
2
A12
A7
3
4
A6
A5 5
A4
6
A10 21
A0 10
A2 8
9
A1
A11 23
27
WE
22
OE
CE1 20
CE2 26
28 Vcc
27 WE
26 CE2
25 A8
24 A9
23 A11
22 OE
(TOP VIEW)
21 A10
20 CE1
19 I/O8
18 I/O7
17 I/O6
16 I/O5
15 I/O4
1 N.C.
14 GND
28 Vcc
11
12
13
15
16
17
18
19
Pin Name I/O
1 N.C.
2 A12
3 A7
4 A6
5 A5
6 A4
7 A3
8 A2
9 A1
10 A0
11 I/O1
12 I/O2
13 I/O3
14 GND
15 I/O4
16 I/O5
17 I/O6
18 I/O7
19 I/O8
20 CE1
21 A10
22 OE
23 A11
24 A9
25 A8
26 CE2
27 WE
28 Vcc
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
I/O8
26
Description
– Non connection
I
I
I
I
I Address signal input terminals. (13-Bit)
I
I
I
I
I/O
I/O Data input/output terminals. (8-Bit)
I/O
– Ground terminal.
I/O
I/O
I/O Data input/output terminals. (8-Bit)
I/O
I/O
I Chip Enable 1 signal input terminal.
I Address signal input terminals. (13-Bit)
I Output Enable signal input terminal.
I
I Address signal input terminals. (13-Bit)
I
I Chip Enable 2 signal input terminal.
I Write Enable signal input terminal.
– Power supply terminal.