82C55A PDF Datasheet


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Description

This is CHMOS PROGRAMMABLE PERIPHERAL INTERFACE. 82C55A CHMOS PROGRAMMABLE PERIPHERAL INTERFACE Y Compatible with all Intel and Most Other Microprocessors High Speed ‘‘Zero Wait State’’ Operation with 8 MH- 8086 88 and 80186 188 24 Programmable I O Pins Low Power CHMOS Completely TTL Compatible Y Y Y Control Word Read-Back Capability Direct Bit Set Reset Capability 2 5 mA DC Drive Capability on all I O Port Outputs Available in 40-Pin DIP and 44-Pin PLCC Available in EXPRESS Standard Temperature Range Extended Temperature Range Y Y Y Y Y Y The Intel 82C55A is a high-performance CHMOS version of the industry standard 8255A general purpose programmable I O device which is designed for use with all Intel and most other microprocessors It provides 24 I O pins which may be individually programmed in 2 groups of 12 and used in 3 major modes of operation The 82C55A is pin compatible with the NMOS 8255A and 8255A-5 In MODE 0 each group of 12 I O pins may be programmed in sets of 4 and 8 to be inputs or outputs In MODE 1 each group may .