Semiconductor & Computer Engineering
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Difference between revisions of "nec/μcom-42"
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| arch = 4-bit word, 10-bit instructions | | arch = 4-bit word, 10-bit instructions | ||
| isa = μCOM-42 | | isa = μCOM-42 | ||
| − | | word = 4 | + | | word = 4 bit |
| proc = <!-- process, e.g. "8 μm" --> | | proc = <!-- process, e.g. "8 μm" --> | ||
| tech = pMOS | | tech = pMOS | ||
Latest revision as of 00:54, 19 May 2016
| NEC μCOM-42 Family | |
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| Developer | NEC |
| Manufacturer | NEC |
| Type | Microcontrollers |
| Production | February, 1977 |
| Architecture | 4-bit word, 10-bit instructions |
| ISA | μCOM-42 |
| Word size | 4 bit 0.5 octets
1 nibbles |
| 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[edit]
| μCOM-42 Microcontrollers | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | Part | Introduction | ROM | RAM | Pins | |||
| μCOM-42 | μPD548 | 1977 | 1920x10 bit | 96x4 bit | 42 | |||
| μCOM-42 EVACHIP | μPD555 | 1977 | 96x4 bit | 64 | ||||
Design[edit]
 |
This section is empty; you can help add the missing info by editing this page. |
μCOM-42 Instruction Set[edit]
- 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[edit]
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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. |
Facts about "μCOM-42 - NEC"
| designer | NEC + |
| full page name | nec/μcom-42 + |
| instance of | microcontroller family + |
| instruction set architecture | μCOM-42 + |
| main designer | NEC + |
| manufacturer | NEC + |
| name | NEC μCOM-42 Family + |
| package | DIP42 + |
| technology | pMOS + |
| word size | 4 bit (0.5 octets, 1 nibbles) + |