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82C55A

CHMOS Programmable Peripheral Interface, PDIP-40

Schematic Symbol

82C55A~{RD}~{CS}GNDA1A0VCCRESET~{WR}PA3PA2PA1PA0PC7PC6PC5PC4PC0PC1PC2PC3PB0PB1PB2PB3PB4PB5PB6PB7D7D6D5D4D3D2D1D0PA7PA6PA5PA4

Pin Configuration (40 pins)

PinNameType
1PA3bidirectional
2PA2bidirectional
3PA1bidirectional
4PA0bidirectional
5~{RD}input
6~{CS}input
7GNDpower_in
8A1input
9A0input
10PC7bidirectional
11PC6bidirectional
12PC5bidirectional
13PC4bidirectional
14PC0bidirectional
15PC1bidirectional
16PC2bidirectional
17PC3bidirectional
18PB0bidirectional
19PB1bidirectional
20PB2bidirectional
21PB3bidirectional
22PB4bidirectional
23PB5bidirectional
24PB6bidirectional
25PB7bidirectional
26VCCpower_in
27D7bidirectional
28D6bidirectional
29D5bidirectional
30D4bidirectional
31D3bidirectional
32D2bidirectional
33D1bidirectional
34D0bidirectional
35RESETinput
36~{WR}input
37PA7bidirectional
38PA6bidirectional
39PA5bidirectional
40PA4bidirectional

Footprint

Confirmed

Package_DIP/DIP-40_W15.24mm

Pad Layout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Pads (40)
NumberType
1thru hole
2thru hole
3thru hole
4thru hole
5thru hole
6thru hole
7thru hole
8thru hole
9thru hole
10thru hole
11thru hole
12thru hole
13thru hole
14thru hole
15thru hole
16thru hole
17thru hole
18thru hole
19thru hole
20thru hole
21thru hole
22thru hole
23thru hole
24thru hole
25thru hole
26thru hole
27thru hole
28thru hole
29thru hole
30thru hole
31thru hole
32thru hole
33thru hole
34thru hole
35thru hole
36thru hole
37thru hole
38thru hole
39thru hole
40thru hole

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Footprint

Details

LibraryInterface
Pin Count40
FootprintDIP-40_W15.24mm
Pad Count40
View Datasheet

Keywords

8255PPI