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Difference between revisions of "nec/μcom-44"
< nec

Line 10: Line 10:
| arch              = 4-bit word, 10-bit instructions
| arch              = 4-bit word, 10-bit instructions
| isa              = μCOM-4
| isa              = μCOM-4
| word              = 4-bit
| word              = 4 bit
| proc              = <!-- process, e.g. "8 μm"                                      -->
| proc              = <!-- process, e.g. "8 μm"                                      -->
| tech              = pMOS
| tech              = pMOS

Latest revision as of 00:00, 19 May 2016

NEC μCOM-44 Family
no photo (ic).svg
Developer NEC
Manufacturer NEC
Type Microcontrollers
Production August, 1977
Architecture 4-bit word, 10-bit instructions
Word size 4 bit
0.5 octets
1 nibbles
Technology pMOS
Clock 150 kHz-440 kHz
Package DIP42

The 'μCOM-44 (or uCOM-44)' was family of general-purpose 4-bit microcontrollers, part of the μCOM-4 extended family. This family offered a subset of the full μCOM-4 ISA and was sold at a reduced price accordingly.


μCOM-44 Microcontrollers
μCOM-44μPD54719771000x10 bit64x4 bit42
μCOM-44LμPD547L19781000x10 bit64x4 bit42
μCOM-44HμPD55219781000x10 bit64x4 bit42
μCOM-44CμPD65119781000x10 bit64x4 bit42


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μCOM-44 Instruction Set[edit]

Main article: μCOM-4 ISA

The μCOM-44 ISA supported a strict subset of the entire μCOM-4 ISA, composed of 58 instructions.

See Also[edit]

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Facts about "μCOM-44 - NEC"
designerNEC +
full page namenec/μcom-44 +
instance ofmicrocontroller family +
instruction set architectureμCOM-4 +
main designerNEC +
manufacturerNEC +
nameNEC μCOM-44 Family +
packageDIP42 +
technologypMOS +
word size4 bit (0.5 octets, 1 nibbles) +