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How To Understand µ-controller

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usmanfaisal

New Member
hi
i want to understand the number of microcontrollers.
for example "89c51"
what does 'c' stands for?
what is '89'?
what is '51'?
can anyone tell me details about it?
i'll be grateful.
regards
USMAN
 

Papabravo

Well-Known Member
All of the early 8 bit Intel processors began with two digits in the range 80-89. The "c" is for CMOS in contrast to the earlier version which were NMOS. The 51 is an architecture variant, but the set of variants does not fill up the entire range of 00-99. The 8-bit variants I am aware of include
8008, 8041, 8048, 8051, 8080, 8085, 8086, 8088
There may be others, but I'm not aware of them.
 
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Sceadwian

Banned
The numbers are vendor dependent, and don't always make sense.
 
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