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Zilog Z80 microprocessor family

Zilog Z80 microprocessor is an 8-bit CPU object-code compatible with Intel 8080 CPU. The Z80 includes full set of 8080 registers and instructions, and supports 8080 interrupts. In addition to that, the Z80 has many enhancements:

  • 80 new instructions, including block transfer, bit and string manipulation instructions.
  • 2 new index registers and a duplicate set of general-purpose and status registers.
  • New types of interrupts for Z80 and non-Z80 peripheral devices.
  • Single +5V voltage.

The Zilog Z80 microprocessor was second sourced by many companies. Clones of this processor were manufactured in East Germany, Romania and Soviet Union.

Computers:Radio Shack TRS-80 Models 1 - 4, Sinclair ZX81, Commodore 128D (also had 6502 CPU), Franklin Ace 1200 (also had 6502 CPU), Osborne 1, KayPro I, KayPro II, etc.
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Architecture
Identification
Pinouts
Support chips
At a glance
Type:
8-bit microprocessor
Introduction:
1976
Technology:
NMOS, CMOS
Frequency:
2.5 MHz - 20 MHz

DDR

DDR VB880D

DDR VB880D
2.5 MHz
Extended temperature range
40-pin plastic DIP

East German clone of Zilog Z80 CPU

Goldstar

Goldstar Z8400A PS

Goldstar Z8400A PS
4 MHz
40-pin plastic DIP

Kawasaki

Kawasaki KL5C8400C

Kawasaki KL5C8400C
40-pin QFP

Mostek

Mostek MK3880P

Mostek MK3880P
2.5 MHz
40-pin side-brazed ceramic DIP
Purple ceramic/gold top/gold pins

NEC

NEC D780C-1

NEC D780C-1
4 MHz
40-pin plastic DIP

ROHM

ROHM BU18400A-PS

ROHM BU18400A-PS
4 MHz
40-pin plastic DIP

SGS

SGS Z8400BC1

SGS Z8400BC1
6 MHz
44-pin plastic LCC

SGS-Ates

SGS-Ates Z80ACPUD1

SGS-Ates Z80ACPUD1
4 MHz
40-pin side-brazed ceramic DIP
White ceramic with gray traces/black top/gold pins

Sharp

Sharp LH0080

Sharp LH0080
2.5 MHz
40-pin plastic DIP

SGS-Thomson

SGS-Thomson Z84C00AB6

SGS-Thomson Z84C00AB6
4 MHz
40-pin plastic DIP
Extended temperature range -55 - +125°C

Toshiba

Toshiba TMPZ84C00AP-8

Toshiba TMPZ84C00AP-8
8 MHz
40-pin plastic DIP

USSR

USSR T34VM1

USSR T34VM1
40-pin ceramic DIP

Soviet clone of Z80 processor

Zilog

Zilog Z80 CPU

Zilog Z80 CPU
2.5 MHz
40-pin ceramic DIP

Very rare version of the Zilog Z80 processor in white ceramic package. Z80 microprocessors were released in July 1976 (May 1976 according to Federico Faggin's www.intel4004.com website). Production date of the chip on the picture is 23th week of 1976 (end of May or beginning of June) - one month before the CPU family was officially released or a few weeks after that (if the May 1976 introduction date is correct).

Last modified: 21 Feb 2008
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