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82C55 Datasheet Chmos Programmable Peripheral Interface

Manufacturer: Intel Corporation

Overview: 82C55A CHMOS PROGRAMMABLE PERIPHERAL INTERFACE Y Compatible with all Intel and Most Other Microprocessors High Speed ‘‘Zero Wait State’’ Operation with 8 MHz 8086 88 and 80186 188 24 Programmable I O Pins Low Power.

Datasheet Details

Part number 82C55
Manufacturer Intel Corporation
File Size 325.10 KB
Description CHMOS PROGRAMMABLE PERIPHERAL INTERFACE
Datasheet 82C55_IntelCorporation.pdf

General Description

Symbol PA3–0 RD CS Pin Number Dip PLCC 1– 4 5 6 2–5 6 7 Type I O I I Name and Function PORT A PINS 0 – 3 Lower nibble of an 8-bit data output latch buffer and an 8-bit data input latch READ CONTROL This input is low during CPU read operations CHIP SELECT A low on this input enables the 82C55A to respond to RD and WR sig

Key Features

  • or ‘‘personality’’ to further enhance the power and flexibility of the 82C55A Port A One 8-bit data output latch buffer and one 8-bit input latch buffer Both ‘‘pull-up’’ and ‘‘pulldown’’ bus hold devices are present on Port A Port B One 8-bit data input output latch buffer Only ‘‘pull-up’’ bus hold devices are present on Port B Port C One 8-bit data output latch buffer and one 8-bit data input buffer (no latch for input) This port can be divided into two 4-bit ports under the mode control Each 4.

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82C55 Distributor