MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -The PIC16F877A basically has three timer modules. These timer module terminals are also multiplexed with other functions for handling alternate functions. These three-timer modules as named as TIMER 0, TIMER 1 and TIMER 2. These modules help to perform various timer, Counter or PWM Generation.

Detailed explanation-2: -PIC16F877A WATCHDOG TIMER PROGRAM IN C The WDT is similar to the Master Clear External Reset as it will hold a PIC® MCU in reset when activated and place the Program Counter back to the beginning of the program software (org 0). The WDT is activated when its time-out period is exceeded.

Detailed explanation-3: -Simply put, the watchdog timer is a hardware timer in the PIC that, if not constantly reset by the software, will cause the PIC to reset. This feature can be incredibly useful if the PIC should hang due to a hardware or software issue and guarantees that the PIC will restart from the beginning.

Detailed explanation-4: -The PIC16F877A PIC MCU has three Timer Modules. They are names as Timer0, Timer1 and Timer2. The Timer 0 and Timer 2 are 8-bit Timers and Timer 1 is a 16-bit Timer.