Fairchild F8
The F3850 CPU component
Developer	Fairchild
Manufacturer	Fairchild
Type	microprocessors, microcontrollers
Introduction	1973 (announced) 1975 (launch)
Production	1974
ISA	F8
Word size	8 bit 1 octets 2 nibbles
Process	8 μm 8,000 nm 0.008 mm
Technology	nMOS
Clock	1 MHz-4 MHz
Package	DIP40, DIP42

The Fairchild F8 was a family of multi-chip 8-bit microprocessors developed by Fairchild in 1974. Later, single-chip MCUs version of the system were also made.

Members

Part	Description
3850	CPU
3851	ROM
3852	Dynamic Memory Interface
3853	Static Memory Interface
3854	Direct Memory Access

MCU

Fairchild later also produced a single-chip version of the F8 in 1977.

Part	I/O Lines	Regs	RAM	ROM	Description
3870	32	64 B	64 B	4 kB
3872-1	32	64 B	64 B	1 kB
3872-2	32	64 B	64 B	2 kB
3872-3	32	64 B	64 B	3 kB
3872-4	32	64 B	64 B	4 kB
38L72	32	64 B	64 B	1-4 kB	Low-power version of 3872

Architecture

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