PPT – PROGRAMMABLE PERIPHERAL INTERFACE -8255 PROGRAMMABLE PERIPHERAL INTERFACE -8255 Features: It is a programmable device. It has 24 I/O programmable pins like PA,PB,PC (3-8 pins). T T L compatible. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow - id: 4da2d0-NDE3O[PDF] Lecture-42 INTEL 8255: (Programmable Peripheral Interface) Lecture-42 INTEL 8255: (Programmable Peripheral Interface) The 8255A is a general purpose programmable I/O device designed for use with Intel microprocessors. It consists of three 8-bit bidirectional I/O ports (24I/O lines) that can be configured to meet different system I/O needs.