Editing Intel MCS-51 (section)

=== Derivative vendors ===
More than 20 independent manufacturers produce MCS-51 compatible processors. {{citation needed|date=July 2017}}

<gallery mode="packed" heights="150px" caption="Intel MCS-51 derived microcontrollers">
File:Atmel 89c2051 gfdl.jpg|[[Atmel]] [[Atmel AT89 series|AT89C2051]]
File:SAB-C515-LN.jpg|[[Infineon]] SAB-C515
File:EPROM-Microcontroller Philips 87C654.jpg|[[Philips]] S87C654
File:Ic-photo-Siemens--SAB-C501G-1RP-(MCU).png|[[Siemens]] SAB-C501
File:STC89C52.jpg|STC Micro STC89C52
</gallery>

Other ICs or IPs compatible with the MCS-51 have been developed by [[Analog Devices]],<ref>{{cite web|url=http://www.analog.com/static/imported-files/data_sheets/ADUC832.pdf|access-date=30 April 2023|website=analog.com|title=MicroConverter, 12-Bit ADCs and DACs with Embedded 62 kB Flash MCU|archive-date=28 May 2014|archive-url=https://web.archive.org/web/20140528075220/http://www.analog.com/static/imported-files/data_sheets/ADUC832.pdf|url-status=dead}}</ref> Integral [[Minsk]],<ref name=integral>{{cite web
| title=Микроконтроллеры и супервизоры питания Серии 1880; 1881; 1842; 588; 1345; 5518АП1ТБМ
| trans-title=Microcontrollers and Power Supervisors Series 1880; 1881; 1842; 588; 1345; 5518AP1TBM
| publisher=OAO "Integral"
| place=Minsk
| url=http://integral.by/ru/products/mikrokontrollery-i-supervizory-pitaniya-serii-1880-1881-1842-588-1345-5518ap1tbm
| language=ru
| access-date=6 January 2017
| archive-date=1 January 2017
| archive-url=https://web.archive.org/web/20170101125139/http://integral.by/ru/products/mikrokontrollery-i-supervizory-pitaniya-serii-1880-1881-1842-588-1345-5518ap1tbm
| url-status=dead
}}</ref>
Kristall [[Kyiv]],<ref name=kristall5701>{{cite web
 |title=Однокристальные микро-эвм 
 |trans-title=Single-chip microcomputers 
 |publisher=Kristall 
 |place=Kyiv 
 |url=http://krystall.net.ua/ru/products/53.html 
 |archive-url=https://web.archive.org/web/20120530003614/http://krystall.net.ua/ru/products/53.html 
 |archive-date=30 May 2012 
 |language=ru 
 |access-date=5 January 2017 
 |url-status=dead 
}}</ref> and
NIIET [[Voronezh]].<ref name=niiet>{{cite web
| title=Микроконтроллеры
| trans-title=Microcontrollers
| publisher=OAO "NIIET"
| place=Voronezh
| url=http://niiet.ru/goods/chips/microcont
| language=ru
| access-date=22 August 2017
| archive-url=https://web.archive.org/web/20170822175635/http://niiet.ru/goods/chips/microcont
| archive-date=22 August 2017
| url-status=dead
}}</ref>