1

Semiconductor

June 1998

82C55A

CMOS Programmable

Peripheral Interface

Features

• Pin Compatible with NMOS 8255A

• 24 Programmable I/O Pins

• Fully TTL Compatible

• High Speed, No “Wait State” Operation with 5MHz and

8MHz 80C86 and 80C88

• Direct Bit Set/Reset Capability

• Enhanced Control Word Read Capability

• L7 Process

• 2.5mA Drive Capability on All I/O Ports

• Low Standby Power (ICCSB) . . . . . . . . . . . . . . . . .10

µA

Description

The Harris 82C55A is a high performance CMOS version of

the industry standard 8255A and is manufactured using a

self-aligned silicon gate CMOS process (Scaled SAJI IV). It

is a general purpose programmable I/O device which may be

used with many different microprocessors. There are 24 I/O

pins which may be individually programmed in 2 groups of

12 and used in 3 major modes of operation. The high

performance and industry standard configuration of the

82C55A make it compatible with the 80C86, 80C88 and

other microprocessors.

Static CMOS circuit design insures low operating power. TTL

compatibility over the full military temperature range and bus

hold circuitry eliminate the need for pull-up resistors. The

Harris advanced SAJI process results in performance equal

to or greater than existing functionally equivalent products at

a fraction of the power.

Ordering Information

PART NUMBERS

PACKAGE

TEMPERATURE

RANGE

PKG.

NO.

5MHz

8MHz

CP82C55A-5

CP82C55A

40 Ld PDIP

E40.6

IP82C55A-5

IP82C55A

E40.6

CS82C55A-5

CS82C55A

44 Ld PLCC

N44.65

IS82C55A-5

IS82C55A

N44.65

CD82C55A-5

CD82C55A

40 Ld

CERDIP

F40.6

ID82C55A-5

ID82C55A

F40.6

MD82C55A-5/B MD82C55A/B

F40.6

8406601QA

8406602QA

SMD#

F40.6

MR82C55A-5/B MR82C55A/B

44 Pad

CLCC

J44.A

8406601XA

8406602XA

SMD#

J44.A

Pinouts

82C55A (DIP)

TOP VIEW

82C55A (CLCC)

TOP VIEW

82C55A (PLCC)

TOP VIEW

PA3

PA2

PA1

PA0

RD

CS

GND

A1

A0

PC7

PC6

PC5

PC4

PC0

PC1

PC2

PC3

PB0

PB1

PB2

PA4

PA5

PA6

PA7

WR

RESET

D0

D1

D2

D3

D4

D5

D6

D7

PB7

PB6

PB5

PB4

PB3

13

1

2

3

4

5

6

7

8

9

10

11

12

14

15

16

17

18

19

20

28

40

39

38

37

36

35

34

33

32

31

30

29

27

26

25

24

23

22

21

40

65

3

2

1 44 43 42 41

4

9

10

11

8

7

12

13

17

16

15

14

39

38

37

36

35

34

33

32

31

30

29

18 19 20 21 22 23 24 25 26 27 28

GND

NC

A1

A0

PC7

PC6

PC5

PC4

PC0

PC1

PC2

NC

RESET

D0

D1

D2

D3

D4

D5

D6

D7

NC

CS

GND

A1

A0

PC7

PC6

PC5

PC4

PC0

PC1

NC

RESET

D0

D1

D2

D3

D4

D5

D6

D7

NC

44 43 42 41 40

39

38

37

36

35

34

33

32

31

30

29

28

27

1

2

3

4

5

6

26

25

24

23

22

21

20

19

18

7

8

9

10

11

12

13

14

15

16

17

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

Copyright

File Number

2969.2