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8051 Essay

  • Submitted by: anjuphss
  • on February 26, 2014
  • Category: History
  • Length: 1,515 words

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Below is an essay on "8051" from Anti Essays, your source for research papers, essays, and term paper examples.


8051
The Intel 8051 microcontroller is one of the most popular general purpose microcontrollers in use today. The success of the Intel 8051 spawned a number of clones which are collectively referred to as the MCS-51 family of microcontrollers, which includes chips from vendors such as Atmel, Philips, Infineon, and Texas Instruments.
The Intel 8051 is an 8-bit microcontroller which means that most available operations are limited to 8 bits. There are 3 basic "sizes" of the 8051: Short, Standard, and Extended. The Short and Standard chips are often available in DIP (dual in-line package) form, but the Extended 8051 models often have a different form factor, and are not "drop-in compatible". All these things are called 8051 because they can all be programmed using 8051 assembly language, and they all share certain features (although the different models all have their own special features).
Some of the features that have made the 8051 popular are:
  * 4 KB on chip program memory.
  * 128 bytes on chip data memory (RAM).
  * 4 reg banks.
  * 128 user defined software flags.
  * 8-bit data bus
  * 16-bit address bus
  * 32 general purpose registers each of 8 bits
  * 16 bit timers (usually 2, but may have more, or less).
  * 3 internal and 2 external interrupts.
  * Bit as well as byte addressable RAM area of 16 bytes.
  * Four 8-bit ports, (short models have two 8-bit ports).
  * 16-bit program counter and data pointer.
  * 1 Microsecond instruction cycle with 12 MHz Crystal.
The Intel 8051 is an 8-bit microcontroller which means that most available operations are limited to 8 bits. There are 3 basic "sizes" of the 8051: Short, Standard, and Extended. The Short and Standard chips are often available in DIP (dual in-line package) form, but the Extended 8051 models often have a different form factor, and are not "drop-in compatible". All these things are called 8051 because they can all be programmed using 8051 assembly language, and they all share certain...

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