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Difference between revisions of "hitachi/hd404720"
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| package 3        = QFP64
 
| package 3        = QFP64
 
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The '''HD404720 Series''' was a [[microprocessor family|family]] of {{arch|4}} [[microcontrollers]] developed by [[Hitachi]].
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The '''HD404720''' was a [[microprocessor family|family]] of {{arch|4}} [[microcontrollers]] developed by [[Hitachi]].
 +
:See also {{\\|HMCS400}} family.
  
 
== Members ==
 
== Members ==
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! colspan="6" | Family Members
 
! colspan="6" | Family Members
 
|-
 
|-
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! Part !! program ROM !! pattern ROM !! RAM !! I/O Ports !! Notes
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! Part !! Program ROM !! Pattern ROM !! RAM !! I/O Ports !! Notes
 
|-
 
|-
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| {{\|HD404720}} || 16,384x10-bit || 8,192x10-bit || 512x 4-bit + 64-digit VFD RAM || 56 ||
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| {{\|HD404720}} || 16,384x 10-bit || 8,192x 10-bit || 512x 4-bit + 64-digit VFD RAM || 56 ||
 
|-
 
|-
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| {{\|HD4074720}} || 16,384x10-bit || 8,192x10-bit || 512x 4-bit + 64-digit VFD RAM || 56 || ZTAT version
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| {{\|HD4074720}} || 16,384x 10-bit || 8,192x 10-bit || 512x 4-bit + 64-digit VFD RAM || 56 || ZTAT version
 
|-
 
|-
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| {{\|HD404728}} || 8,192x10-bit ||  || 512x 4-bit + 64-digit VFD RAM || 56 ||
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| {{\|HD404728}} || 8,192x 10-bit ||  || 512x 4-bit + 64-digit VFD RAM || 56 ||
 
|-
 
|-
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| {{\|HD404729}} || 16,384x10-bit || 8,192x10-bit || 512x 4-bit + 64-digit VFD RAM || 56 ||  
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| {{\|HD404729}} || 16,384x 10-bit || 8,192x 10-bit || 512x 4-bit + 64-digit VFD RAM || 56 ||  
 
|-
 
|-
−
| {{\|HD4074729}} || 16,384x10-bit || 8,192x10-bit || 512x 4-bit + 64-digit VFD RAM || 56 || ZTAT verson
+
| {{\|HD4074729}} || 16,384x 10-bit || 8,192x 10-bit || 512x 4-bit + 64-digit VFD RAM || 56 || ZTAT verson
 
|}
 
|}
  

Latest revision as of 11:56, 15 November 2025

Hitachi HD404720 Family
no photo (ic).svg
Developer Hitachi
Manufacturer Hitachi
Type microcontrollers
ISA HD404720
Word size 4 bit
0.5 octets
1 nibbles
Technology CMOS
Clock 100 kHz-1.12 MHz
Package DIP64, CerDIP64, QFP64

The HD404720 was a family of 4-bit microcontrollers developed by Hitachi.

See also HMCS400 family.

Members[edit]

Family Members
Part Program ROM Pattern ROM RAM I/O Ports Notes
HD404720 16,384x 10-bit 8,192x 10-bit 512x 4-bit + 64-digit VFD RAM 56
HD4074720 16,384x 10-bit 8,192x 10-bit 512x 4-bit + 64-digit VFD RAM 56 ZTAT version
HD404728 8,192x 10-bit 512x 4-bit + 64-digit VFD RAM 56
HD404729 16,384x 10-bit 8,192x 10-bit 512x 4-bit + 64-digit VFD RAM 56
HD4074729 16,384x 10-bit 8,192x 10-bit 512x 4-bit + 64-digit VFD RAM 56 ZTAT verson

Design[edit]

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ISA[edit]

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Documents[edit]


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Retrieved from "https://en.wikichip.org/w/index.php?title=hitachi/hd404720&oldid=103967"
Facts about "HD404720 - Hitachi"
RDF feed
designerHitachi +
full page namehitachi/hd404720 +
instance ofmicrocontroller family +
instruction set architectureHD404720 +
main designerHitachi +
manufacturerHitachi +
nameHitachi HD404720 Family +
packageDIP64 +, CerDIP64 + and QFP64 +
technologyCMOS +
word size4 bit (0.5 octets, 1 nibbles) +