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F8 - Fairchild
< fairchild

Fairchild F8
KL Fairchild F3850.jpg
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[edit]

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

MCU[edit]

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[edit]

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Facts about "F8 - Fairchild"
designerFairchild +
first announced1973 +
first launched1975 +
full page namefairchild/f8 +
instance ofmicroprocessor family + and microcontroller family +
instruction set architectureF8 +
manufacturerFairchild +
packageDIP40 + and DIP42 +
process8,000 nm (8 μm, 0.008 mm) +
technologynMOS +
word size8 bit (1 octets, 2 nibbles) +