82C55A Overview
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.



