Semiconductor & Computer Engineering
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Difference between revisions of "nec/μcom-45"
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| arch = 4-bit word, 10-bit instructions | | arch = 4-bit word, 10-bit instructions | ||
| isa = μCOM-4 | | isa = μCOM-4 | ||
| − | | 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 00:00, 19 May 2016
| NEC μCOM-45 Family | |
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| Developer | NEC |
| Manufacturer | NEC |
| Type | Microcontrollers |
| Production | November, 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 | DIP28, DIP42 |
The μCOM-45 (or uCOM-45) 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, offered a reduced amount of memory and was marketed as the low-end series among the μCOM-4 lines.
Microcontrollers[edit]
| μCOM-45 Microcontrollers | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | Part | Introduction | ROM | RAM | Pins | |||
| μCOM-45 | μPD550 | 1977 | 640x8 bit | 32x4 bit | 28 | |||
| μCOM-45L | μPD550L | 1980 | 640x8 bit | 32x4 bit | 28 | |||
| μCOM-45 | μPD554 | 1978 | 1000x8 bit | 32x4 bit | 28 | |||
| μCOM-45L | μPD554L | 1981 | 1000x8 bit | 32x4 bit | 28 | |||
| μCOM-45C | μPD652 | 1978 | 1000x8 bit | 32x4 bit | 42 | |||
Design[edit]
 |
This section is empty; you can help add the missing info by editing this page. |
μCOM-45 Instruction Set[edit]
- Main article: μCOM-4 ISA
The μCOM-45 ISA supported a strict subset of the entire μCOM-4 ISA, composed of 58 instructions.
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-45 - NEC"
| designer | NEC + |
| full page name | nec/μcom-45 + |
| instance of | microcontroller family + |
| instruction set architecture | μCOM-4 + |
| main designer | NEC + |
| manufacturer | NEC + |
| name | NEC μCOM-45 Family + |
| package | DIP28 + and DIP42 + |
| technology | pMOS + |
| word size | 4 bit (0.5 octets, 1 nibbles) + |