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Revision as of 21:17, 19 January 2016
NEC μCOM-4 | |
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Developer | NEC |
Manufacturer | NEC |
Type | Microcontrollers |
Production | October, 1977 |
Architecture | 4-bit |
Technology | nMOC "nMOC" is not in the list (BiCMOS, CMOS, Static CMOS, Dynamic CMOS, nMOS, pMOS, Bipolar, ECL, Schottky TTL, Schottky transistor, ...) of allowed values for the "technology" property.
|
Clock | 150 kHz-1 mHz |
Package | DIP28, DIP42 |
The μCOM-4 line is an extended family of 4-bit microcontrollers developed by NEC in the late 1970s. This family was designed to be low-cost, mass-produced, microcontrollers for ECRs, industrial controllers, appliance controllers, games, toys, scientific calculators, and other consumer electronics. The μCOM-4 line is based on the μPD751, the first Japanese single-chip microprocessor.
Contents
Introduction Date
1977 | 1980 | ||||||
---|---|---|---|---|---|---|---|
Q1 | Q2 | Q3 | Q4 | Q1 | Q2 | Q3 | Q4 |
μCOM-42 | μCOM-43 | μCOM-44 | μCOM-45 | μCOM-75 |
Families
The μCOM-4 was original divided into two separate domains:
μCOM-42
The μCOM-42 was specifically marketed for electronic cash registers (ECRs), Point of Sale (POS), and electronic scale applications. The μCOM-42 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.
μCOM-43/44/45
The μCOM-43/44/45 was marketed as a general-purpose microcontroller suited for a large array of low-cost consumer and industrial applications. These MCUs shared a common instruction set.
Design
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This section is empty; you can help add the missing info by editing this page. |
Instruction set
- Main article: μCOM-4 ISA
The family was originally split into two sets of ISAs. The μCOM-42 had an instruction set specifically designed to facilitate its use in Electronic Cash Register (ECR) and Scale products. The μCOM-43/4/5 were designed to be general purpose microcontrollers.
See also
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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. |
Warning: Default sort key "μCOM-4" overrides earlier default sort key "μCOM-4, NEC".
designer | NEC + |
full page name | nec/μcom-4 + |
instance of | microcontroller extended family + |
main designer | NEC + |
manufacturer | NEC + |
name | NEC μCOM-4 + |
package | DIP28 + and DIP42 + |