资 源 简 介
The Intersil 82C55A is a high performance CMOS version ofthe industry standard 8255A and is manufactured using aself-aligned silicon gate CMOS process (Scaled SAJI IV). Itis a general purpose programmable I/O device which may beused with many different microprocessors. There are 24 I/Opins which may be individually programmed in 2 groups of12 and used in 3 major modes of operaTIon. The highperformance and industry standard configuraTIon of the82C55A make it compaTIble with the 80C86, 80C88 andother microprocessors.StaTIc CMOS circuit design insures low operating power. TTLcompatibility over the full military temperature range and bushold circuitry eliminate the need for pull-up resistors. TheIntersil advanced SAJI process results in performance equalto or greater than existing functionally equivalent products ata fraction of the power.
Features• Pin Compatible with NMOS 8255A• 24 Programmable I/O Pins• Fully TTL Compatible• High Speed, No “Wait State” Operation with 5MHz and8MHz 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) . . . . . . . . . . . . . . . . .10mA
