Semiconductor & Computer Engineering
From WikiChip
Difference between revisions of "nec/μcom-42"
(add links) |
|||
| Line 40: | Line 40: | ||
|?pin count | |?pin count | ||
|format=template | |format=template | ||
| − | |template=proc table | + | |template=proc table 1 |
|userparam=7 | |userparam=7 | ||
|mainlabel=- | |mainlabel=- | ||
}} | }} | ||
</table> | </table> | ||
| − | |||
| − | |||
| − | |||
== μCOM-42 Instruction Set == | == μCOM-42 Instruction Set == | ||
{{main|/μcom-42 isa|l1=μCOM-42 ISA}} | {{main|/μcom-42 isa|l1=μCOM-42 ISA}} | ||
| − | The μCOM-42 ISA had a set of 72 instructions. Every instruction is a single 10-bit word | + | The μCOM-42 ISA had a set of 72 instructions. Every instruction is a single 10-bit word. |
| + | |||
== See Also == | == See Also == | ||
| + | * [[NEC]] | ||
* {{nec|μCOM-4}} | * {{nec|μCOM-4}} | ||
| + | :• {{nec|μCOM-42}} | ||
| + | :• {{nec|μCOM-43}} | ||
| + | :• {{nec|μCOM-44}} | ||
| + | :• {{nec|μCOM-45}} | ||
* {{nec|μCOM-8}} | * {{nec|μCOM-8}} | ||
{{stub}} | {{stub}} | ||
Latest revision as of 03:21, 2 November 2025
| NEC μCOM-42 Family | |
.svg)
| |
| 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 | ||||
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]
 |
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) + |