Semiconductor & Computer Engineering
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μCOM-44 - NEC
| NEC μCOM-44 Family | |
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| |
| Developer | NEC |
| Manufacturer | NEC |
| Type | Microcontrollers |
| Production | August, 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-44 (or uCOM-44)' was family of general-purpose 4-bit microcontrollers, part of the μCOM-4 extended family. This family offered a subset of the full μCOM-4 ISA and was sold at a reduced price accordingly.
Microcontrollers[edit]
| μCOM-44 Microcontrollers | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | Part | Introduction | ROM | RAM | Pins | |||
| μCOM-44 | μPD547 | 1977 | 1000x10 bit | 64x4 bit | 42 | |||
| μCOM-44L | μPD547L | 1978 | 1000x10 bit | 64x4 bit | 42 | |||
| μCOM-44H | μPD552 | 1978 | 1000x10 bit | 64x4 bit | 42 | |||
| μCOM-44C | μPD651 | 1978 | 1000x10 bit | 64x4 bit | 42 | |||
Design[edit]
 |
This section is empty; you can help add the missing info by editing this page. |
μCOM-44 Instruction Set[edit]
- Main article: μCOM-4 ISA
The μCOM-44 ISA supported a strict subset of the entire μCOM-4 ISA, composed of 58 instructions.
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-44 - NEC"
| designer | NEC + |
| full page name | nec/μcom-44 + |
| instance of | microcontroller family + |
| instruction set architecture | μCOM-4 + |
| main designer | NEC + |
| manufacturer | NEC + |
| name | NEC μCOM-44 Family + |
| package | DIP42 + |
| technology | pMOS + |
| word size | 4 bit (0.5 octets, 1 nibbles) + |