Contents
How the PIC16F877A generates a PWM signal?
PWM using PIC16F877A: PWM signals can be generated in our PIC Microcontroller by using the CCP (Compare Capture PWM) module. The resolution of our PWM signal is 10-bit, that is for a value of 0 there will be a duty cycle of 0% and for a value of 1024 (2^10) there be a duty cycle of 100%.
What is PWM in PIC16F877A?
Pulse-width modulation (PWM) is a modulation process or technique used in most communication systems. The PWM signal we can use to control the speed of DC motor or to control the intensity. The duty cycle of a square wave is modulated to encode a specific analog signal level. …
For what purpose the UART module is used for a 16f877a?
asynchronous serial communication
A universal asynchronous receiver-transmitter is a hardware module for asynchronous serial communication in which the data format and transmission speeds are configurable.
What is the minimum value which can be set using software PWM on the GPIO pins of the bolt module?
The minimum value which can be set using software pwm on the gpio pins of the bolt module 3.3V.
What are the three timers on the pic16f877a?
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.
Can a PWM generation act as a timer?
All Timers can act as a timer or counter or PWM Generation. now we will see each one by one. To start using a timer we should understand some of the fancy terms like 8-bit/16-bit timer, Prescaler, Timer interrupts, and Focs. Now, let us see what each one really means.
What does the prescaler do on the pic16f877a?
Prescaler: Prescaler is a block that presents inside the timer module and it is used to divide the clock frequency by a constant. It allows the timer to be clocked at the rate a user desires. The PIC16F877A basically has three timer modules.
Where are the PWM bits stored in pic16f877a?
PIC16F877A has two PWM module with a resolution of 10-bits. The 8-MSB bits are stored in CCPRxL and the remaining 2-bits in the CCPxCON register. The below tables shows the PWM module of PIC.