From WikiChip
Difference between revisions of "nec/μcom-42"
< nec

(Microprocessors)
m
Line 18: Line 18:
 
| package          = DIP42
 
| package          = DIP42
 
}}
 
}}
The '''μCOM-42''' was [[microprocessor family|family]] of {{arch|4}} [[microcontroller]]s, part of the {{nec|μCOM-4|μCOM-4 extended family}}, specifically marketed for electronic cash registers (ECRs), Point of Sale (POS), and electronic scale applications. These chips were specifically designed for controlling 8x4 keyboards, 8-digit displays, and various ECR-type printers. The μCOM-42 had a separate, modified instruction set, compared with the rest of the {{nec|μCOM-4}} families.
+
The '''μCOM-42''' (or uCOM-42) was [[microprocessor family|family]] of {{arch|4}} [[microcontroller]]s, part of the {{nec|μCOM-4|μCOM-4 extended family}}, specifically marketed for electronic cash registers (ECRs), Point of Sale (POS), and electronic scale applications. These chips were specifically designed for controlling 8x4 keyboards, 8-digit displays, and various ECR-type printers. The μCOM-42 had a separate, modified instruction set, compared with the rest of the {{nec|μCOM-4}} families.
  
 
== Microcontrollers ==
 
== Microcontrollers ==

Revision as of 03:01, 11 February 2016

NEC μCOM-42 Family
no photo (ic).svg
Developer NEC
Manufacturer NEC
Type Microcontrollers
Production February, 1977
Architecture 4-bit word, 10-bit instructions
ISA μCOM-42
Word size 4-bit
"-bit" is not declared as a valid unit of measurement for this property.
Technology pMOS
Clock 100 kHz-200 kHz
Package DIP42

The μCOM-42 (or uCOM-42) was family of 4-bit microcontrollers, part of the μCOM-4 extended family, specifically marketed for electronic cash registers (ECRs), Point of Sale (POS), and electronic scale applications. These chips were specifically designed for controlling 8x4 keyboards, 8-digit displays, and various ECR-type printers. The μCOM-42 had a separate, modified instruction set, compared with the rest of the μCOM-4 families.

Microcontrollers

μCOM-42 Microcontrollers
ModelPartIntroductionROMRAMPins
μCOM-42μPD54819771920x10 bit96x4 bit42
μCOM-42 EVACHIPμPD555197796x4 bit64

Design

New text document.svg This section is empty; you can help add the missing info by editing this page.

μCOM-42 Instruction Set

Main article: μCOM-42 ISA

The μCOM-42 ISA had a set of 72 instructions. Every instruction is a single 10-bit word

See Also


Text document with shapes.svg This article is still a stub and needs your attention. You can help improve this article by editing this page and adding the missing information.
Facts about "μCOM-42 - NEC"
designerNEC +
full page namenec/μcom-42 +
instance ofmicrocontroller family +
instruction set architectureμCOM-42 +
main designerNEC +
manufacturerNEC +
nameNEC μCOM-42 Family +
packageDIP42 +
technologypMOS +