Intel 8255

Intel 8255

The Intel 8255 (or i8255) Programmable Peripheral Interface chip is a peripheral chip originally developed for the Intel 8085 microprocessor, and as such is a member of a large array of such chips, known as the MCS-85 Family. This chip was later also used with the Intel 8086 and its descendants.It was later made (cloned) by many other manufacturers. It is made in DIP 40 and PLCC 44 pins encapsulated versions.

This chip is used to give the CPU access to programmable parallel I/O, and is similar to other such chips like the Motorola 6520 PIA (Peripheral Interface Adapter) the MOS Technology 6522 (Versatile Interface Adapter) and the MOS Technology CIA (Complex Interface Adapter) all developed for the 6502 family. Other such chips are the 2655 Programmable Peripheral Interface from the Signetics 2650 family of microprocessors, the 6820 PIO (Peripheral Input/Output) from the Motorola 6800 family, the Western Design Center WDC 65C21, an enhanced 6520, and many others.

The 8255 is used in home computers such as SV-328 and all MSX, but is perhaps best known for its use in the original IBM-PC's parallel printer port (now largely defunct and replaced by the USB standard, and considered a legacy port).

However, most often the functionality the 8255 offered is now not implemented with the 8255 chip itself anymore, but is embedded in a larger VLSI chip as a sub function. The 8255 chip itself is still made, and is sometimes used together with a micro controller to expand its I/O capabilities.

External links

* [http://drew.hickmans.net/8255.htm Complete Description about the Intel 8255 IC]


Wikimedia Foundation. 2010.

Нужно сделать НИР?

Look at other dictionaries:

  • Intel 8255 — Intel D8255 Patillaje del i8255. El Intel 8255 (o i8255 …   Wikipedia Español

  • Intel 8255 — Intel D8255 …   Википедия

  • Intel 8255 — Anschlussbelegung des Intel 8255 Der Intel 8255 (auch i8255) ist ein programmierbarer paralleler Ein/Ausgabebaustein, der primär für den Intel 8085 Prozessor entwickelt wurde. Später wurde er auch mit dem Intel 8086 und seinen Nachfolgern… …   Deutsch Wikipedia

  • Intel i8255 — Saltar a navegación, búsqueda Patillaje del i8255 El Intel 8255 (o i8255) Programmable Peripheral Interface (PPI : interfaz programable de periféricos) es un chip controlador de periféricos desarrollado originalmente para el microprocesador… …   Wikipedia Español

  • Intel — Corporation Rechtsform Corporation ISIN US4581401001 …   Deutsch Wikipedia

  • Intel Corporation — Unternehmensform Corporation ISIN …   Deutsch Wikipedia

  • Intel 8086 y 8088 — Intel 8088 Microprocesador Microprocesador Intel 8088 Producción 1979   1982 Fabricante(s) …   Wikipedia Español

  • Intel 8253 — Intel C8253 Temporizador programable de i …   Wikipedia Español

  • Intel 8259 — Este artículo o sección necesita referencias que aparezcan en una publicación acreditada, como revistas especializadas, monografías, prensa diaria o páginas de Internet fidedignas. Puedes añadirlas así o avisar …   Wikipedia Español

  • Intel 8259 — The Intel 8259 is a family of Programmable Interrupt Controllers (PICs) designed and developed for use with the Intel 8085 and Intel 8086 8 bit and 16 bit microprocessors. The family originally consisted of the 8259, 8259A, and 8259B PICs, though …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”