From WikiChip
μPD556 (μCOM-43 EVACHIP) - NEC
< nec‎ | μcom-43
Revision as of 06:29, 20 January 2016 by Inject (talk | contribs) (Created page with "{{nec title|μPD556 (μCOM-43 EVACHIP)}} {{mcu | image = <!-- foobar.png --> | caption = <!-- description of foobar.png --> | name...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

NEC μCOM-43 EVACHIP
no photo (ic).svg
Manufacturer NEC
Model Number μCOM-43 EVACHIP
Part Number μPD556
Introduction 1977 (launch)
General information
Family μCOM-43
Clock 150 kHz-440 kHz
Microarchitecture
Microarchitecture μCOM-43
Technology pMOS
Word size 4 bit
0.5 octets
1 nibbles
Electrical
Op. Temp -10 °C – 70 °C
Supply VDD -10 V
Supply VSS 0 V
Memory
RAM 48 B
4.8e-5 MB
0.048 kB
384 b
4.8e-8 GB
(96x4 bit)
Max Addressable Memory 2 kB
Stack 3 levels
Pins
Pins 64
IRQ lines 2
I/O ports 35
Packaging
Package DIP64 (DIP), CerDIP64 (CerDIP)

The μPD556 or μCOM-43 EVACHIP is a 4-bit evaluation/development microcontroller used for both software and hardware debugging of the μPD546 microcontroller. Since the μCOM-43 is a strict superset of the μCOM-44 and μCOM-45, this evaluation chip was also used for debugging those two those chip families as well.

The 556 is functionally identical to the μPD546 without the internal memory, which instead is needed to be supplied externally and connected via the additional pins. This chip also has a HOLD operation that allows step-by-step inspection of operations.

Design

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

Instruction Set

Main article: μCOM-4 ISA
New text document.svg This section is empty; you can help add the missing info by editing this page.

Documents

See also

familyμCOM-43 +
first launched1977 +
full page namenec/μcom-43/μpd556 +
instance ofmicrocontroller +
manufacturerNEC +
max operating temperature70 °C +
microarchitectureμCOM-43 +
min operating temperature-10 °C +
model numberμCOM-43 EVACHIP +
nameNEC μCOM-43 EVACHIP +
packageDIP64 + and CerDIP64 +
part numberμPD556 +
pin count64 +
ram4.8e-5 MB (0.048 kB, 48 B, 384 b, 4.8e-8 GB) +
ram breakdown96x4 bit +
technologypMOS +
word size4 bit (0.5 octets, 1 nibbles) +