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μCOM-43 - NEC
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NEC μCOM-43 Family
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Developer NEC
Manufacturer NEC
Type Microcontrollers
Production May, 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-43 (or uCOM-43) was family of general-purpose 4-bit microcontrollers, part of the μCOM-4 extended family. The μCOM-43 offered real hardware interrupt capabilities (as opposed to pseudo in the μCOM-44 and μCOM-45).

Microcontrollers[edit]

μCOM-43 Microcontrollers
ModelPartIntroductionROMRAMPins
μCOM-43μPD54619772000x10 bit96x4 bit42
μCOM-43HμPD55319782000x8 bit96x4 bit42
EVACHIP-43μPD556 μPD556B197796x4 bit64
μCOM-43SLμPD557L19812000x8 bit96x4 bit28
μCOM-43CμPD65019782000x10 bit96x4 bit42

Design[edit]

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μCOM-43 Instruction Set[edit]

Main article: μCOM-4 ISA

The μCOM-43 ISA supported the entire μCOM-4 ISA which included 80 instructions.

Documents[edit]

Datasheet[edit]

See Also[edit]


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Facts about "μCOM-43 - NEC"
designerNEC +
full page namenec/μcom-43 +
instance ofmicrocontroller family +
instruction set architectureμCOM-4 +
main designerNEC +
manufacturerNEC +
nameNEC μCOM-43 Family +
packageDIP42 +
technologypMOS +
word size4 bit (0.5 octets, 1 nibbles) +