Which timer is used in CCP module of PIC18F4550?
Timer 1 or Timer 3 can be chosen to source the CCP module.
How many timer is PIC18F4550?
four Timers
PIC18F4550 is equipped with four Timers namely, Timer0, Timer1, Timer2 and Timer3. Before going for the details of Timer configurations, it is important to learn how time delay is calculated by the timer since exact delay generation is the most common application of Timers.
What are the steps in using Timers of PIC18F4550?
Steps for Programming PIC18F4550 Timer using Interrupt
- Enable GIE, PEIE, TMR1IE.
- Configure the T1CON register.
- Clear TMR1IF Timer1 interrupt flag.
- Load the count in TMR1 16-bit or TMR1H (higher byte) and TMR1L (lower byte).
- Set TMR1ON to start the Timer1 operation.
Which timer is used in CCP module of PIC18F4550 Mcq?
In PIC18F4550, there are 8-bit and 16-bit timers. The timer takes the internal clock as a reference clock, while the counter counts external clocks or pulses applied through port pins.
What is timer CCP?
– CCP stands for Capture, Compare, and Pulse Width Modulation. – Each CCP module can be configured to perform capture, compare, or PWM function. – In capture operation, the CCP module copy the contents of a timer into a capture register on an signal edge.
How many CCP modules exist in PIC18F4550?
2
PIC18F4550 has 2 in-built CCP modules i.e. CCP1 and CCP2.
What is overflow interrupt?
Well, when the timer counter reaches its maximum value in bit – means that if the timer is a 8-bit timer, it can reaches maximum 255 – the timer go back to zero. At this specific moment, the timer overflow interrupt occur. This means that we can do something at the frequency that we want.
What is CCP in microcontroller?
The abbreviation CCP stands for Capture/Compare/PWM. The CCP module is a peripheral which allows the user to time and control different events. Capture Mode, allows timing for the duration of an event. This circuit gives insight into the current state of a register which constantly changes its value.
Which timer is used in PWM generation?
We will use the simplest timer, TIMER0 for PWM generation. So we have an 8 bit counter counting from 0 to 255 and then resetting to 0 and so on.
What are different interrupt sources in PIC18F?
PIC18F4550 has three external hardware interrupts – INT0, INT1, and INT2. They are on PORTB pins RB0, RB1, and RB2 shown in the below image. These interrupts are edge-triggered interrupts i.e. triggered by either a rising edge or by a falling edge.
Which timer can be used as a clock source for CCP module?
CCP Timer Selection For example, if the device has two CCP modules, CCP1 operating in Compare mode may select Timer1 as the clock source, whereas CCP2 operating in Compare mode may select Timer3 as the clock source.