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IA8255

Programmable Peripheral Interface Adapter

Copyright

© 1999, InnovASIC Inc.

Customer Specific IC Solutions

FEATURES

•

Form, Fit, and Function Compatible with the Intel

82C55A

•

Packaging options available: 40 Pin Plastic DIP or 44 Pin Plastic Leaded

Chip Carrier

•

24 Programmable Input/Outputs

•

Static Read/Write or Handshaking Modes

•

Direct Bit Set/Reset Capability

•

High Speed, No “Wait State” Operation

other vendors have declared obsolete. By specifying parts through this program a customer is

assured of never having a component become obsolete again. This advanced information sheet

assumes the original part has been designed in, and so provides a summary of capabilities only. For

Intel is a registered trademark of Intel Corporation

Harris is a copyright trademark of Harris Corporation

Package Pinout

(6)

(1)

(2)

(3)

(4)

(5)

(7)

(8)

(9)

A0

(10)

PC7

(11)

PC6

(12)

PC5

(13)

PC4

(14)

40 Pin DIP

IA8255

D2

D3

D4

D5

(20)

PB2

(15)

PC1

(16)

PC2

(17)

PC3

(18)

PB0

(19)

PB1

(21)

(22)

(23)

(24)

PB4

PB3

(40)

(39)

(38)

(37)

(36)

(35)

(34)

(33)

(32)

(31)

(30)

(29)

(28)

(27)

(26)

(25)

PC0

PB6

PB5

VCC

PB7

D6

D7

D0

D1

WR_n

RESET

PA6

PA7

PA4

PA5

CS_n

PA3

PA2

PA1

PA0

RD_n

GND

A1

44 Pin LCC

IA8255

(12)

N. C.

(7)

CS_n

(8)

GND

(9)

A1

(10)

A0

(11)

PC7

(13)

PC6

(14)

PC5

(15)

PC4

(16)

PC0

(17)

PC1

RESET

D4

N. C.

D3

D1

D0

(34)

(39)

(38)

(37)

(36)

(35)

(33)

(32)

(31)

(30)

(29)

VCC

D7

D6

D5

D2