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零件编号
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MSM81C55-5GS 查看數據表(PDF) - Oki Electric Industry
零件编号
产品描述 (功能)
生产厂家
MSM81C55-5GS
2048-Bit CMOS STATIC RAM WITH I/O PORTS AND TIMER
Oki Electric Industry
MSM81C55-5GS Datasheet PDF : 19 Pages
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¡ Semiconductor
PIN CONFIGURATION (TOP VIEW)
44 pin Plastic QFP
TIMEROUT
1
IO/
M
2
CE
3
RD
4
WR
5
ALE 6
AD
0
7
AD
1
8
AD
2
9
AD
3
10
NC 11
MSM81C55-5RS/GS/JS
40 pin Plastic DIP
PC
3
1
PC
4
2
TIMER IN
3
RESET
4
PC
5
5
TIMER OUT
6
IO/
M
7
CE
8
RD
9
WR
10
ALE 11
AD
0
12
AD
1
13
AD
2
14
AD
3
15
AD
4
16
AD
5
17
AD
6
18
AD
7
19
GND 20
40 V
CC
39 PC
2
38 PC
1
37 PC
0
36 PB
7
35 PB
6
34 PB
5
33 PB
4
32 PB
3
31 PB
2
30 PB
1
29 PB
0
28 PA
7
27 PA
6
26 PA
5
25 PA
4
24 PA
3
23 PA
2
22 PA
1
21 PA
0
33 PB
6
32 PB
5
31 PB
4
30 PB
3
29 PB
2
28 PB
1
27 PB
0
26 PA
7
25 PA
6
24 PA
5
23 PA
4
44 pin Plastic QFJ
TIMER OUT
7
IO/
M
8
CE
9
RD
10
WR
11
NC 12
ALE 13
AD
0
14
AD
1
15
AD
2
16
AD
3
17
39 PB
6
38 PB
5
37 PB
4
36 PB
3
35 PB
2
34 NC
33 PB
1
32 PB
0
31 PA
7
30 PA
6
29 PA
5
2/19
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