Microcontrollers 8 bit

Discussion in 'Embedded Systems and Microcontrollers' started by Nathan Hale, Aug 9, 2016.

  1. Nathan Hale

    Thread Starter Active Member

    Oct 28, 2011
    125
    2
    Hi folks, what does the "8 bit" in a 8 bit microcontroller mean? thanks
     
  2. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    2,909
    2,170
    Robin Mitchell and joeyd999 like this.
  3. cmartinez

    AAC Fanatic!

    Jan 17, 2007
    3,573
    2,542
    It means that its instructions, an its I/O arrangements are performed in groups of 8 bits, like 8 zeroes and ones, which are normally called a byte.
    One of the most popular 8-bit MCU's out there is the 8051, of which there are many brands.
    Have a look at its instruction set, and standard architecture.
     
  4. dannyf

    Well-Known Member

    Sep 13, 2015
    1,819
    362
    The databus is 8bit wide. It's instructions can be longer (typically).
     
    ci139 likes this.
  5. vead

    Active Member

    Nov 24, 2011
    621
    8
    You can deal with 8 bit data. Example you can add, subtract 8 bit data
    xxxxxxxx+xxxxxxxx=xxxxxxxx
    8 bit data+8 bit data= 8 bit data (output)
     
  6. NorthGuy

    Active Member

    Jun 28, 2014
    604
    121
    Nothing if you program in C.

    If you program in assembler, you wouldn't ask.
     
    Robin Mitchell likes this.
Loading...