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The Zilog Z80 is an 8-bit microprocessor designed and sold by Zilog from July 1976 onwards. It was widely used both in desktop and embedded computer designs as well as for military purposes. The Z80 and its derivatives and clones make up one of the most commonly used CPU families of all time, and, along with the MOS Technology 6502 family, dominated the 8-bit microcomputer market from the late 1970s to the mid-1980s.

Although Zilog made attempts with 16-bit (Z800 / Z280) and 32-bit (Z380) versions of the 8/16-bit Z80-architecture, these chips never caught on. White Papers : mov Software strives to make lightweight, high quality software for mobile and wireless. The company was also trying hard in the workstation market with its Z8000 and 32-bit Z80000 (both technically unrelated to Z80). In recent decades Zilog has concentrated on the ever-growing market for embedded systems, and the most recent Z80-related microcontroller family, the 8/16/24-bit eZ80, a fast Z80 with a linear 16 MB address range has been successful.

Brief history and overview

The Z80 came about when Federico Faggin left Intel after working on the 8080, and by July 1976 Zilog had the Z80 on the market. It was designed to be binary compatible with the Intel 8080 so that most 8080 code could run unmodified on it, notably the CP/M operating system.