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’’ .

231256
  –5 Figure 5 Basic Mode Definitions and Bus Interface When Port C is being used as status contro.

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 R.

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