PIC MICROCONTROLLER -16F877A

LITERATURE REVIEW

CONTENT:

The basic building block of PIC 16F877A is based on Harvard architecture.PIC 16F877 is one of the most advanced microcontroller from Microchip. This controller is widely used for experimental and modern applications because of its low price, wide range of applications, high quality, and ease of availability. It is ideal for applications such as machine control applications, measurement devices, study purpose, and so on.The PIC 16F877 features all the components which modern microcontrollers normally have. The PIC16FXX series has more advanced and developed features when compared to its previous series. It has a few important features such as 

• high performance
• only 35 simple word instructions
• fully static design
• wide operating voltage range (2.0-5.56)volts
• high sink or source current (25mA)
• commercial,industrial and extended temperature range
• low power consumption

PIC 16F877A PROGRAM MEMORY

In order to write a program, we need a memory to run some system before interface on the IC. Program memory contains the program that are written by the user. The program counter (PC) executes these store commands one by one. Usually PIC16F877A devices have a 13 bits wide program counter that is capable of addressing 8K*14 bit program memory space. This memory is primarily used for storing the program that are written (burned) to be used by the PIC. These device also have 8K*14 bits of flash memory that can be electrically erasable or reprogrammed. Each time we write a new program to the controller, we must delete the old one at that time. The figure above shows the program memory and stack.

OBJECTIVES:

• To become well-known  and get a lot of information about this PIC before used it as my brain of my system.
• To recognize about the function and determine which PIC is suitable for my project.