Intel MCS-80
8080, the CPU of the MCS-80 system
Developer	Intel
Manufacturer	Intel
Type	microprocessors
Production	1974
Release date	April, 1974
Architecture	8-bit word, 16-bit addressing
ISA	8080
Word size	8 bit 1 octets 2 nibbles
Process	6 μm 6,000 nm 0.006 mm
Technology	nMOS
Clock	500 kHz-2.08 MHz
Package	DIP40

The MCS-80 (Micro Computer Set-80) was a family of 8-bit microprocessor chipsets developed by Intel. Introduced on April, 1974, the MCS-80 featured the 8080 CPU, the forefather of all modern x86-based microprocessors.

History

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Members

The original 8080 had an issue that prevented it from working with external TTL components as intended. This was fixed with the introduction of the "A" versions.

Part	Frequency	Description
8080	500 kHz - 2.08 MHz	MPU, Original, has compatibility with TTL
8080A-1	500 kHz - 3.12 MHz	MPU
8080A-2	500 kHz - 2.63 MHz	MPU
8224		clock generator & driver
8801		clock generator crystal
8228		system controller & bus driver
8238		system controller & bus driver

Military Specs

The following are military specs versions.

Part	Frequency	Description
M8080A	500 kHz - 2.08 MHz	MPU
M8224		clock generator & driver
M8228		system controller & bus driver
M8238		system controller & bus driver

Memory

Additional memory components that was used with the MCS-80

Part	Size	Description
8708	1024x8 bit	EPROM
2716	2048x8 bit	EPROM (pin compatible with 2316E ROM)
8308	1024x8 bit	MOS ROM (pin compatible with 8708 PROM)
8316A	2048x8 bit	MOS RAM
2316E	2048x8 bit	ROM

Design

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ISA

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See Also

• MCS-4
• MCS-8

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