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Difference between revisions of "nec/μcom-45/μpd554l"
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| temp max = 70 °C | | temp max = 70 °C | ||
| temp min = -10 °C | | temp min = -10 °C | ||
| − | | vdd = - | + | | vdd = -8 V |
| vss = 0 V | | vss = 0 V | ||
| memory = yes | | memory = yes | ||
Latest revision as of 12:22, 22 January 2016
| NEC μCOM-45L | |
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| |
| Manufacturer | NEC |
| Model Number | μCOM-45L |
| Part Number | μPD554L |
| Introduction | 1981 (launch) |
| General information | |
| Family | μCOM-45 |
| Clock | 150 kHz-440 kHz |
| Microarchitecture | |
| Microarchitecture | μCOM-4 |
| Technology | pMOS |
| Word size | 4 bit 0.5 octets
1 nibbles |
| Electrical | |
| Op. Temp | -10 °C – 70 °C |
| Supply VDD | -8 V |
| Supply VSS | 0 V |
| Memory | |
| RAM | 16 B 1.6e-5 MB (32x4 bit)
0.016 kB 128 b 1.6e-8 GB |
| ROM | 1 kB 0.001 MB (1000x8 bit)
1,000 B 8,000 b 1.0e-6 GB |
| Stack | 1 levels |
| Pins | |
| Pins | 28 |
| I/O ports | 21 |
| Packaging | |
| Package | DIP28 (DIP) |
The μPD554L or μCOM-45L is a 4-bit microcontroller introduced in 1981 by NEC as part of their μCOM-45 family. This model is modified to support a lower voltage of -8V. Additionally, it's also capable of directly driving fluorescent indicator panels at -35 volts. This model replaces the older μPD550 which had a reduced amount of ROM.
Contents
Design[edit]
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This section is empty; you can help add the missing info by editing this page. |
Instruction Set[edit]
- Main article: μCOM-4 ISA
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This section is empty; you can help add the missing info by editing this page. |
Documents[edit]
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This section is empty; you can help add the missing info by editing this page. |
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 "μPD554L (μCOM-45L) - NEC"
| family | μCOM-45 + |
| first launched | 1981 + |
| full page name | nec/μcom-45/μpd554l + |
| instance of | microcontroller + |
| manufacturer | NEC + |
| max operating temperature | 70 °C + |
| microarchitecture | μCOM-4 + |
| min operating temperature | -10 °C + |
| model number | μCOM-45L + |
| name | NEC μCOM-45L + |
| package | DIP28 + |
| part number | μPD554L + |
| pin count | 28 + |
| ram | 1.6e-5 MB (0.016 kB, 16 B, 128 b, 1.6e-8 GB) + |
| ram breakdown | 32x4 bit + |
| rom | 0.001 MB (1 kB, 1,000 B, 8,000 b, 1.0e-6 GB) + |
| rom breakdown | 1000x8 bit + |
| technology | pMOS + |
| word size | 4 bit (0.5 octets, 1 nibbles) + |