FN6140.1 is a sensitive electrostatic discharge device that requires proper IC handling procedures. It is a CMOS programmable peripheral interface chip manufactured by Intersil, which can be used with many different microprocessors. It has 24 programmable I/O pins and can be used in three major modes of operation. The chip is compatible with 80C86, 80C88, and other microprocessors, with high performance and industry-standard configuration. The static CMOS circuit design ensures low operating power. Intersil's advanced SAJI process results in performance equal to or greater than existing functionally equivalent products at a fraction of the power.
The Intersil MS82C55A and MQ82C55A are general-purpose programmable peripheral interface devices manufactured using self-aligned silicon gate CMOS process. They feature 24 individually programmable I/O pins divided into two groups of 12, supporting three major modes of operation.
The device requires a +5V power supply connected to the Vcc pin.
The 82C55A has 24 programmable I/O pins that can be individually programmed.
When the reset input is high, all ports A, B, and C are set to the input mode.