8255 / 8255A

Adapts or transmits signals between devices.

Tutorial / documentation

Communication

Quick documentation & first test preparation

  1. Identify component 8255 and its package.
  2. Identify the protocol, logic levels and each pin’s function.
  3. Check required termination and pull-up/pull-down resistors.
  4. Consult the application circuit in the linked documentation before testing.

8255

Programmable Peripheral Interface, PDIP-40

  • Programmable Peripheral Interface, PDIP-40
  • Identify the protocol, logic levels and each pin’s function.
  • Check required termination and pull-up/pull-down resistors.
  • The manufacturer’s pinout and absolute limits take precedence over this page.
Technical documentation

8255A

Programmable Peripheral Interface, PDIP-40

  • Programmable Peripheral Interface, PDIP-40
  • Identify the protocol, logic levels and each pin’s function.
  • Check required termination and pull-up/pull-down resistors.
  • The manufacturer’s pinout and absolute limits take precedence over this page.
Technical documentation