WS82C55A Просмотр технического описания (PDF) - Wing Shing International Group

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WS82C55A

CMOS Programmable peripheral Interface

Wing Shing International Group 

CMOS Programmable peripheral

Interface

WS82C55A

Features

Description

• Pin Compatible with NMOS 8255A

• 24 Programmable I/O Pins

• Fully TTL Compatible

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

• 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) . . . . . . . . . . . . . . . . .10µA

Ordering Information

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

make it compatible with the 80C86, 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

advanced SAJI process results in performance equal

to or greater than existing functionally equivalent products at

a fraction of the power.

PA3 1

40 PA4

PA2 2

39 PA5

PA1 3

PA0 4

38 PA6

37 PA7

CS 1

RD 5

36 WR GND 2

CS 6

35 RESET

GND 7 WS82C55A-5P 34 D0

A1 8 WS82C55AP 33 D1

A0 9

32 D2

PC7 10

31 D3

A1 3

A0 4

PC7 5

PC6 6

PC6 11

PC5 12

PC4 13

PC0 14

PC1 15

PC2 16

DIP-40

30 D4

29 D5

28 D6

27 D7

26 VCC

25 PB7

PC5 7

PC4 8

PC0 9

PC1 10

PC2 11

PC3 17

24 PB6

PB0 18

23 PB5

PB1 19

22 PB4

PB2 20

21 PB3

WS82C55A-5Q

WS82C55AQ

QFP-44

33 RESET

32 D0

31 D1

30 D2.

29 D3

28 D4

27 D5

26 D6

25 D7

24 VCC

23 PB7

CS

GND

A1

A0

PC7

NC

PC6

PC5

PC4

PC0

PC1

6 5 4 3 2 1 44 43 42 41 40

7

39

8

38

9

10

WS82C55A-5C

37

36

11 WS82C55AC

35

12

34

13

33

14

PLCC-44

32

15

31

16

30

17

29

18 1920 21 22 23 24 25 26 27 28

RESET

D0

D1

D2

D3

NC

D4

D5

D6

D7

VCC

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

Wing Shing Computer Components Co., (H.K.)Ltd.

Homepage: http://www.wingshing.com

1

Tel:(852)2341 9276 Fax:(852)2797 8153

E-mail: wsccltd@hkstar.com

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