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Difference between revisions of "nec/μcom-43/μpd557l"
< nec‎ | μcom-43

(Created page with "{{nec title|μPD557L (μCOM-43SL)}} {{mcu | image = <!-- foobar.png --> | caption = <!-- description of foobar.png --> | name = NEC...")
 
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| first launched  = 1981
 
| first launched  = 1981
 
| family          = μCOM-43
 
| family          = μCOM-43
−
| clock min      = 150 kHz
+
| clock min      = 100 kHz
−
| clock max      = 440 kHz
+
| clock max      = 180 kHz
 
| microarch      = μCOM-4
 
| microarch      = μCOM-4
 
| process        =  
 
| process        =  
Line 18: Line 18:
 
| temp max        = 70 °C
 
| temp max        = 70 °C
 
| temp min        = -10 °C
 
| temp min        = -10 °C
−
| vdd            = -10 V
+
| vdd            = -8.0 V
 
| vss            = 0 V
 
| vss            = 0 V
 
| memory          = yes
 
| memory          = yes
Line 27: Line 27:
 
| stack levels    = 3
 
| stack levels    = 3
 
| pins            = yes
 
| pins            = yes
−
| pin count      = 42
+
| pin count      = 28
−
| irq lines      = 2
+
| irq lines      = 1
−
| io lines        = 35
+
| io lines        = 21
 
| packaging      = yes
 
| packaging      = yes
−
| package        = DIP42
+
| package        = DIP28
 
| package type    = DIP
 
| package type    = DIP
 
}}
 
}}
−
The '''μPD557L''' or '''μCOM-43SL''' is a general-purpose {{arch|4}} [[microcontroller]] introduced in 1981 by [[NEC]]. This MCU is part of the {{nec|μCOM-43|μCOM-43 family}}. This model is capable of being pulled to -35V, allowing direct driving of [[Vacuum Fluorescent Display]]s.
+
The '''μPD557L''' or '''μCOM-43SL''' is a general-purpose {{arch|4}} [[microcontroller]] introduced in 1980 by [[NEC]]. This MCU is a 28-pin, low-power part of the {{nec|μCOM-43|μCOM-43 family}}, working with a reduced supply voltage of -8.0 V<sub>GG</sub>. This model has open-drain outputs capable of being pulled to -35V, allowing direct driving of [[Vacuum Fluorescent Display]]s.
  
 
== Design ==
 
== Design ==
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== Instruction Set ==
 
== Instruction Set ==
 
{{main|nec/μcom-4/isa|l1=μCOM-4 ISA}}
 
{{main|nec/μcom-4/isa|l1=μCOM-4 ISA}}
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{{empty section}}
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This model executes the full 80-instructions set of the μCOM-43 family.
  
 
== Documents ==
 
== Documents ==
 
{{empty section}}
 
{{empty section}}
 +
 +
== References ==
 +
*NEC Microcomputers, Inc., 1980 Catalog, "μCOM-4: 4-Bit Single Chip Microcomputer Family, μCOM-43SL CPU μPD557L", 104, 125-126 pp.
 +
*NEC Microcomputers, Inc., 1981 Catalog, "μCOM-4: 4-Bit Single Chip Microcomputer Family, μPD557L μCOM-43SL", 155, 177-178 pp.
 +
*NEC Electronics (Europe) GmbH, 1982 Catalog, "μCOM-4: 4-Bit Single Chip Microcomputer Family, μPD557L μCOM-43SL", 12, 159-160 pp.
  
 
== See also ==
 
== See also ==

Latest revision as of 05:13, 1 August 2018

NEC μCOM-43SL
no photo (ic).svg
Manufacturer NEC
Model Number μCOM-43SL
Part Number μPD557L
Introduction 1981 (launch)
General information
Family μCOM-43
Clock 100 kHz-180 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 -8.0 V
Supply VSS 0 V
Memory
RAM 48 B
4.8e-5 MB
0.048 kB
384 b
4.8e-8 GB
(96x4 bit)
ROM 2 kB
0.002 MB
2,000 B
16,000 b
2.0e-6 GB
(2000x8 bit)
Stack 3 levels
Pins
Pins 28
IRQ lines 1
I/O ports 21
Packaging
Package DIP28 (DIP)

The μPD557L or μCOM-43SL is a general-purpose 4-bit microcontroller introduced in 1980 by NEC. This MCU is a 28-pin, low-power part of the μCOM-43 family, working with a reduced supply voltage of -8.0 VGG. This model has open-drain outputs capable of being pulled to -35V, allowing direct driving of Vacuum Fluorescent Displays.

Design[edit]

New text document.svg This section is empty; you can help add the missing info by editing this page.

Instruction Set[edit]

Main article: μCOM-4 ISA

This model executes the full 80-instructions set of the μCOM-43 family.

Documents[edit]

New text document.svg This section is empty; you can help add the missing info by editing this page.

References[edit]

  • NEC Microcomputers, Inc., 1980 Catalog, "μCOM-4: 4-Bit Single Chip Microcomputer Family, μCOM-43SL CPU μPD557L", 104, 125-126 pp.
  • NEC Microcomputers, Inc., 1981 Catalog, "μCOM-4: 4-Bit Single Chip Microcomputer Family, μPD557L μCOM-43SL", 155, 177-178 pp.
  • NEC Electronics (Europe) GmbH, 1982 Catalog, "μCOM-4: 4-Bit Single Chip Microcomputer Family, μPD557L μCOM-43SL", 12, 159-160 pp.

See also[edit]


Text document with shapes.svg 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.
Retrieved from "https://en.wikichip.org/w/index.php?title=nec/μcom-43/μpd557l&oldid=80955"
Facts about "μPD557L (μCOM-43SL) - NEC"
RDF feed
familyμCOM-43 +
first launched1981 +
full page namenec/μcom-43/μpd557l +
instance ofmicrocontroller +
manufacturerNEC +
max operating temperature70 °C +
microarchitectureμCOM-4 +
min operating temperature-10 °C +
model numberμCOM-43SL +
nameNEC μCOM-43SL +
packageDIP28 +
part numberμPD557L +
pin count28 +
ram4.8e-5 MB (0.048 kB, 48 B, 384 b, 4.8e-8 GB) +
ram breakdown96x4 bit +
rom0.002 MB (2 kB, 2,000 B, 16,000 b, 2.0e-6 GB) +
rom breakdown2000x8 bit +
technologypMOS +
word size4 bit (0.5 octets, 1 nibbles) +