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μCOM-44 - NEC
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NEC μCOM-44 Family
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Developer NEC
Manufacturer NEC
Type Microcontrollers
Production August, 1977
Architecture 4-bit word, 10-bit instructions
ISA μCOM-4
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.

Microcontrollers[edit]

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

Design[edit]

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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) +