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{{fujitsu title|MB8850}}
 
{{fujitsu title|MB8850}}
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The '''Fujitsu MB8850 series''' is a [[microprocessor family|family]] of [[4-bit architecture|4-bit]] [[CMOS]] [[microcontroller]]s developed by [[Fujitsu]] and introduced in 1977{{date off}}. The {{fujitsu|MB88500}} series is a high-speed version of this series.
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{{ic family
 +
| title            = MB8850/MB8850H Family
 +
| image            = MB8855.JPG
 +
| caption          = Fujitsu MB8855 datecode 1986 week 13
 +
| developer        = Fujitsu
 +
| manufacturer      = Fujitsu
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| type              = microcontrollers
 +
| production start  = 1977
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| production end    = 1992
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| arch              =
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| isa              = MB8850
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| word              = 4 bit
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| proc              =
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| tech              = CMOS
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| clock min        = 1.0 MHz
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| clock max        = 6.0 MHz
 +
| package          = DIP42
 +
| package 2        = DIP28
 +
| package 3        = QFP48
 +
}}
 +
The '''MB8850/MB8850H series''' is a [[microprocessor family|family]] of {{arch|4}} [[CMOS]] [[microcontroller]]s developed by [[Fujitsu]] and introduced in [[1977]]{{date off}}. This series is architecturally identical to the {{fujitsu|MB8840|MB8840 family}} (An [[nMOS]] version). The {{fujitsu|MB88500}} series is a high-speed version of this series.
  
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{| class="wikitable" style="float: right;"
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== Members ==
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! colspan="2" | Family Members
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{| class="wikitable"
 +
! colspan="6" | Family Members
 
|-
 
|-
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! Part !! Description
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! Part !! ROM !! RAM !! I/O Ports !! Instructions !! Notes
 
|-
 
|-
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| {{fujitsu|MB8851}} || 2k x 8-bit ROM, 128x4-bit RAM, 37 I/O
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| {{\|MB8851}} || 2K x 8 bit || 128 x 4-bit || 37 || 70 ||
 
|-
 
|-
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| {{fujitsu|MB8852}} || 2k x 8-bit ROM, 128x4-bit RAM, 25 I/O
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| {{\|MB8852}} || 2K x 8 bit || 128 x 4 bit || 25 || 69 ||
 
|-
 
|-
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| {{fujitsu|MB8854}} || 1k x 8-bit ROM, 64x4-bit RAM, 25 I/O
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| {{\|MB8853}} || 1K x 8 bit || 64 x 4 bit || 37 || 70 ||
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|-
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| {{\|MB8854}} || 1K x 8 bit || 64 x 4 bit || 25 || 69 ||
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|-
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| {{\|MB8855}} || 2K x 8 bit || 128 x 4-bit || 37 || 70 ||
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|-
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| {{\|MB8856}} || 2K x 8 bit || 128 x 4-bit || 25 || 69 ||
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|-
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| {{\|MB8857}} || 1K x 8 bit || 64 x 4 bit || 37 || 70 ||
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|-
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| {{\|MB8858}} || 1K x 8 bit || 64 x 4 bit || 25 || 69 ||
 
|}
 
|}
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 +
== ISA ==
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{{main|fujitsu/mb8850/isa|l1=MB8850 ISA}}
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The {{fujitsu|MB8840}} family and this have an identical ISA consisting for 60-70 instructions.
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 +
== Documents ==
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* [[:File:MB8850 family.pdf|MB8850 Datasheet]]
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==See also==
 
==See also==
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* {{fujitsu|MB88500}}
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* {{fujitsu|MB8840}}, a [[nMOS]] version
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* {{fujitsu|MB8840}}, a [[NMOS]] version
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* {{fujitsu|MB88500}}, a higher frequency version
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<!--
 
{{stub}}
 
{{stub}}
 
{{DEFAULTSORT:MB8850}}
 
{{DEFAULTSORT:MB8850}}
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[[Category:Fujitsu MB8850]] -->
 
[[Category:Fujitsu]]
 
[[Category:Fujitsu]]
 
[[Category:4-bit microprocessors]]
 
[[Category:4-bit microprocessors]]
 
[[Category:1977 microprocessors]]
 
[[Category:1977 microprocessors]]
 
[[Category:microprocessor families]]
 
[[Category:microprocessor families]]
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[[Category:Fujitsu MB8850]]
 

Latest revision as of 06:32, 4 October 2025

MB8850/MB8850H Family
MB8855.JPG
Fujitsu MB8855 datecode 1986 week 13
Developer Fujitsu
Manufacturer Fujitsu
Type microcontrollers
Production 1977-1992
ISA MB8850
Word size 4 bit
0.5 octets
1 nibbles
Technology CMOS
Clock 1.0 MHz-6.0 MHz
Package DIP42, DIP28, QFP48

The MB8850/MB8850H series is a family of 4-bit CMOS microcontrollers developed by Fujitsu and introduced in 1977[off?]. This series is architecturally identical to the MB8840 family (An nMOS version). The MB88500 series is a high-speed version of this series.

Members[edit]

Family Members
Part ROM RAM I/O Ports Instructions Notes
MB8851 2K x 8 bit 128 x 4-bit 37 70
MB8852 2K x 8 bit 128 x 4 bit 25 69
MB8853 1K x 8 bit 64 x 4 bit 37 70
MB8854 1K x 8 bit 64 x 4 bit 25 69
MB8855 2K x 8 bit 128 x 4-bit 37 70
MB8856 2K x 8 bit 128 x 4-bit 25 69
MB8857 1K x 8 bit 64 x 4 bit 37 70
MB8858 1K x 8 bit 64 x 4 bit 25 69

ISA[edit]

Main article: MB8850 ISA

The MB8840 family and this have an identical ISA consisting for 60-70 instructions.

Documents[edit]

See also[edit]

Retrieved from "https://en.wikichip.org/w/index.php?title=fujitsu/mb8850&oldid=103762"
Facts about "MB8850 - Fujitsu"
RDF feed
designerFujitsu +
full page namefujitsu/mb8850 +
instance ofmicrocontroller family +
instruction set architectureMB8850 +
main designerFujitsu +
manufacturerFujitsu +
nameMB8850/MB8850H Family +
packageDIP42 +, DIP28 + and QFP48 +
technologyCMOS +
word size4 bit (0.5 octets, 1 nibbles) +