Abstract
The PIC microcontroller family is one of the most popular microcontrollers used in many commercial and industrial applications. It is manufactured by Microchip Technology Inc. The PIC microcontroller architecture is essentially based on a modified Harvard RISC (Reduced Instruction Set Computer) instruction set with dual-bus architecture, thus, providing fast and flexible design with an easy migration path from only 6 pins to 80 pins, and from 384 bytes to 128 kbytes of program memory. The PIC microcontrollers are available with many different specifications depending on memory type, input-output (I/O) pin count, memory size, and special features. There are many models of PIC microcontrollers available, all of these are upward compatible with each other and a program developed for one model can very easily, with no modifications, be run on other models of the family. The basic assembler instruction set of PIC microcontrollers consists of only 33 instructions and most of the family members use the same instruction set.
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