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The '''Hitachi HMCS40''' is a [[microprocessor family|family]] of {{arch|4}} [[microcontroller]]s developed by [[Hitachi]] and introduced in the late 1970s and continued well into the 90s. Two types of each component were manufactured, one using [[pMOS]] for low cost and another using [[CMOS]] where lower power was more desired. Hitachi later also introduce a replacement series called the {{hitachi|HMCS400}}.
 
The '''Hitachi HMCS40''' is a [[microprocessor family|family]] of {{arch|4}} [[microcontroller]]s developed by [[Hitachi]] and introduced in the late 1970s and continued well into the 90s. Two types of each component were manufactured, one using [[pMOS]] for low cost and another using [[CMOS]] where lower power was more desired. Hitachi later also introduce a replacement series called the {{hitachi|HMCS400}}.
  
−
The chips contained 4-bit [[ALU]] performing [[BCD]] arithmetic. 512 to 2,048 Words (10-bit ea) of program [[ROM]]. Additional 128 Words (10-bit ea) of pattern ROM. 32 to 160 digits (4-bit ea) of data [[RAM]]. Chips also contained Event/Timer-Counter and 22-44 I/O lines. Output was aimed for driving dot matrix Liquid Crystal displays. The HMCS40 was used in a very large array of games, toys, controllers, and office equipment, specifically many devices with VFDs.
+
The chips contained 4-bit [[ALU]] performing [[BCD]] arithmetic. 512 to 2,048 Words (10-bit ea) of program [[ROM]]. Additional 128 Words (10-bit ea) of pattern ROM. 32 to 160 digits (4-bit ea) of data [[RAM]]. Chips also contained Event/Timer-Counter and 22-44 I/O lines. Output was aimed for driving dot matrix [[LCD]] (Liquid Crystal displays). The HMCS40 was used in a very large array of games, toys, controllers, and office equipment, specifically many devices with [[VFD]]s.
  
 
== Devices ==
 
== Devices ==
  
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"
−
! Model !! ROM !! RAM !! Registers !! Stack Registers !! I/O Lines !! Part No.
+
! Part !! Model !! ROM !! RAM !! Registers !! Stack <br>Registers !! I/O Lines  
 
|-
 
|-
−
| {{\|HMCS42}} || 512x10-bit  || 32x4-bit  || 4 || 2 || 22 || HD38702
+
| HD38702 || {{\|HMCS42}} || 512x 10-bit  || 32x 4-bit  || 4 || 2 || 22  
 
|-
 
|-
−
| {{\|HMCS43}} || 1024x10-bit || 80x4-bit  || 6 || 3 || 32 || HD38750, HD38755
+
| HD38750, <br>HD38755 || {{\|HMCS43}} || 1024x 10-bit || 80x 4-bit  || 6 || 3 || 32  
 
|-
 
|-
−
| {{\|HMCS43C}} || 1024x10-bit || 80x4-bit  || 6 || 3 || 32 || HD38750
+
| HD38750 || HMCS43C || 1024x 10-bit || 80x 4-bit  || 6 || 3 || 32  
 
|-
 
|-
−
| {{\|HMCS43CL}} || 1024x10-bit || 80x4-bit  || 6 || 3 || 32 || HD38755
+
| HD38755 || HMCS43CL || 1024x 10-bit || 80x 4-bit  || 6 || 3 || 32  
 
|-
 
|-
−
| {{\|HMCS44}} || 2048x10-bit || 160x4-bit || 8 || 4 || 32 || HD38800, HD38805
+
| HD38800, <br>HD38805 || {{\|HMCS44}} || 2048x 10-bit || 160x 4-bit || 8 || 4 || 32  
 
|-
 
|-
−
| {{\|HMCS44C}} || 2048x10-bit || 160x4-bit || 8 || 4 || 32 || HD44801
+
| HD44801 || HMCS44C || 2048x 10-bit || 160x 4-bit || 8 || 4 || 32  
 
|-
 
|-
−
| {{\|HMCS44CL}} || 2048x10-bit || 160x4-bit || 8 || 4 || 32 || HD44808
+
| HD44808 || HMCS44CL || 2048x 10-bit || 160x 4-bit || 8 || 4 || 32  
 
|-
 
|-
−
| {{\|HMCS45}} || 2048x10-bit || 160x4-bit || 6 || 4 || 44 || HD44820, HD44828
+
| HD44820, <br>HD44828 || {{\|HMCS45}} || 2048x 10-bit || 160x 4-bit || 6 || 4 || 44  
 
|-
 
|-
−
| {{\|HMCS45C}} || 2048x10-bit || 160x4-bit || 6 || 4 || 44 || HD44820
+
| HD44820 || HMCS45C || 2048x 10-bit || 160x 4-bit || 6 || 4 || 44  
 
|-
 
|-
−
| {{\|HMCS45CL}} || 2048x10-bit || 160x4-bit || 6 || 4 || 44 || HD44828
+
| HD44828 || HMCS45CL || 2048x 10-bit || 160x 4-bit || 6 || 4 || 44  
 
|-
 
|-
−
| {{\|HMCS46}} || 4096x10-bit || 256x4-bit || 8 || 4 || 32 || HD44840, HD44848
+
| HD44840, <br>HD44848 || {{\|HMCS46}} || 4096x 10-bit || 256x 4-bit || 8 || 4 || 32  
 
|-
 
|-
−
| {{\|HMCS46C}} || 4096x10-bit || 256x4-bit || 8 || 4 || 32 || HD44840
+
| HD44840 || HMCS46C || 4096x 10-bit || 256x 4-bit || 8 || 4 || 32  
 
|-
 
|-
−
| {{\|HMCS46CL}} || 4096x10-bit || 256x4-bit || 8 || 4 || 32 || HD44848
+
| HD44848 || HMCS46CL || 4096x 10-bit || 256x 4-bit || 8 || 4 || 32  
 
|-
 
|-
−
| {{\|HMCS47}} || 4096x10-bit || 256x4-bit || 6 || 4 || 44 || HD44860, HD44868
+
| HD44860, <br>HD44868 || {{\|HMCS47}} || 4096x 10-bit || 256x 4-bit || 6 || 4 || 44  
 
|-
 
|-
−
| {{\|HMCS47C}} || 4096x10-bit || 256x4-bit || 6 || 4 || 44 || HD44860
+
| HD44860 || HMCS47C || 4096x 10-bit || 256x 4-bit || 6 || 4 || 44  
 
|-
 
|-
−
| {{\|HMCS47CL}} || 4096x10-bit || 256x4-bit || 6 || 4 || 44 || HD44868
+
| HD44868 || HMCS47CL || 4096x 10-bit || 256x 4-bit || 6 || 4 || 44  
 
|-
 
|-
−
| {{\|LCD-III}} || 2048x10-bit || 160x4-bit || 6 || 4 || 32 || HD44795, HD44790
+
| HD44795, <br>HD44790 || {{\|LCD-III}} || 2048x 10-bit || 160x 4-bit || 6 || 4 || 32  
 
|-
 
|-
−
| {{\|LCD-IV}} || 4096x10-bit || 256x4-bit || 6 || 4 || 32 || HD613901
+
| HD613901 || {{\|LCD-IV}} || 4096x 10-bit || 256x 4-bit || 6 || 4 || 32  
 
|}
 
|}
  
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{{stub}}
 
{{stub}}
−
{{DEFAULTSORT:HMCS40}}
 
 
[[Category:Hitachi microprocessors]]
 
[[Category:Hitachi microprocessors]]
 
[[Category:4-bit microprocessors]]
 
[[Category:4-bit microprocessors]]
 
[[Category:microprocessor families]]
 
[[Category:microprocessor families]]
 
[[Category:Hitachi HMCS40 family]]
 
[[Category:Hitachi HMCS40 family]]

Latest revision as of 11:45, 15 November 2025

Hitachi HMCS40
no photo (ic).svg
Developer Hitachi
Manufacturer Hitachi
Type microcontrollers
Production 1978-1995
ISA HMCS40
Word size 4 bit
0.5 octets
1 nibbles
Technology pMOS, CMOS
Clock 400 kHz-4.5 MHz
Package DIP28, DIP42, QFP64

The Hitachi HMCS40 is a family of 4-bit microcontrollers developed by Hitachi and introduced in the late 1970s and continued well into the 90s. Two types of each component were manufactured, one using pMOS for low cost and another using CMOS where lower power was more desired. Hitachi later also introduce a replacement series called the HMCS400.

The chips contained 4-bit ALU performing BCD arithmetic. 512 to 2,048 Words (10-bit ea) of program ROM. Additional 128 Words (10-bit ea) of pattern ROM. 32 to 160 digits (4-bit ea) of data RAM. Chips also contained Event/Timer-Counter and 22-44 I/O lines. Output was aimed for driving dot matrix LCD (Liquid Crystal displays). The HMCS40 was used in a very large array of games, toys, controllers, and office equipment, specifically many devices with VFDs.

Devices[edit]

Part Model ROM RAM Registers Stack
Registers 		I/O Lines
HD38702 HMCS42 512x 10-bit 32x 4-bit 4 2 22
HD38750,
HD38755 		HMCS43 1024x 10-bit 80x 4-bit 6 3 32
HD38750 HMCS43C 1024x 10-bit 80x 4-bit 6 3 32
HD38755 HMCS43CL 1024x 10-bit 80x 4-bit 6 3 32
HD38800,
HD38805 		HMCS44 2048x 10-bit 160x 4-bit 8 4 32
HD44801 HMCS44C 2048x 10-bit 160x 4-bit 8 4 32
HD44808 HMCS44CL 2048x 10-bit 160x 4-bit 8 4 32
HD44820,
HD44828 		HMCS45 2048x 10-bit 160x 4-bit 6 4 44
HD44820 HMCS45C 2048x 10-bit 160x 4-bit 6 4 44
HD44828 HMCS45CL 2048x 10-bit 160x 4-bit 6 4 44
HD44840,
HD44848 		HMCS46 4096x 10-bit 256x 4-bit 8 4 32
HD44840 HMCS46C 4096x 10-bit 256x 4-bit 8 4 32
HD44848 HMCS46CL 4096x 10-bit 256x 4-bit 8 4 32
HD44860,
HD44868 		HMCS47 4096x 10-bit 256x 4-bit 6 4 44
HD44860 HMCS47C 4096x 10-bit 256x 4-bit 6 4 44
HD44868 HMCS47CL 4096x 10-bit 256x 4-bit 6 4 44
HD44795,
HD44790 		LCD-III 2048x 10-bit 160x 4-bit 6 4 32
HD613901 LCD-IV 4096x 10-bit 256x 4-bit 6 4 32

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/hmcs40&oldid=103966"
Facts about "HMCS40 - Hitachi"
RDF feed
designerHitachi +
full page namehitachi/hmcs40 +
instance ofmicrocontroller family +
instruction set architectureHMCS40 +
main designerHitachi +
manufacturerHitachi +
nameHitachi HMCS40 +
packageDIP28 +, DIP42 + and QFP64 +
technologypMOS + and CMOS +
word size4 bit (0.5 octets, 1 nibbles) +