datasheets 82c55a intel free download

File name 82c55a_intel.pdf

82C55A CHMOS PROGRAMMABLE PERIPHERAL INTERFACE Y Compatible with all Intel and Most Y Control Word Read-Back Capability Other Microprocessors Y Direct Bit Set Reset Capability Y High Speed ``Zero Wait State'' Y 2 5 mA DC Drive Capability on all I O Operation with 8 MHz 8086 88 and Port Outputs 80186 188 Y Available in 40-Pin DIP and 44-Pin PLCC Y 24 Programmable I O Pins Y Available in EXPRESS Y Low Power CHMOS Standard Temperature Range Y Completely TTL Compatible Extended Temperature Range 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 be programmed to have 8 lines of input or output 3 of the remaining 4 pins are used for handshaking and interrupt control signals MODE 2 is a strobed bi-directional bus configuration The 82C55A is fabricated on Intel's advanced CHMOS III technology which provides low power consumption with performance equal to or greater than the equivalent NMOS product The 82C55A is available in 40-pin DIP and 44-pin plastic leaded chip carrier (PLCC) packages 231256