Read Microcontroller PIC16F777 Heximal out from its flash memory and copy the firmware to blank MCU PIC16F777 which will provide the same functions, the status of Microcontroller will be changed after MCU breaking;
The CCPR1H register and a 2-bit internal latch are used to double buffer the PWM duty cycle. This double buffering is essential for glitchless PWM operation. The 8-bit timer TMR2 register is concatenated with either the 2-bit internal system clock (FOSC), or 2 bits of the prescaler, to create the 10-bit time base.
The system clock is used if the Timer2 prescaler is set to 1:1. The resolution determines the number of available duty cycles for a given period. For example, a 10-bit resolution will result in 1024 discrete duty cycles, whereas an 8-bit resolution will result in 256 discrete duty cycles if microcontroller atmega164a code extraction.
The maximum PWM resolution is 10 bits when PR2 is The resolution is a function of the PR2 register value as shown by Equation 11-In Sleep mode, the TMR2 register will not increment and the state of the module will not change. If the CCP1 pin is driving a value, it will continue to drive that value.
When the device wakes up, TMR2 will continue from its previous state. The PWM frequency is derived from the system clock frequency. Any changes in the system clock frequency will result in changes to the PWM frequency. See
Section 3.0 “Oscillator Module (With Fail-Safe Clock Monitor)” for additional details. Any Reset will force all ports to Input mode and the CCP registers to their Reset states after IC ATmega164V code extraction.
The following steps should be taken when configuring the CCP module for PWM operation:
Disable the PWM pin (CCP1) output driver by setting the associated TRIS bit.
Set the PWM period by loading the PR2 register.
Configure the CCP module for the PWM mode by loading the CCP1CON register with the appropriate values.
Set the PWM duty cycle by loading the CCPR1L register and DC1B<1:0> bits of the CCP1CON register when read microcontroller atmega324 code extraction.
Configure and start Timer2:
- Clear the TMR2IF interrupt flag bit of the PIR1 register.
- Set the Timer2 prescale value by loading the T2CKPS bits of the T2CON register.
- Enable Timer2 by setting the TMR2ON bit of the T2CON register.
Enable PWM output after a new PWM cycle has started:
- Wait until Timer2 overflows (TMR2IF bit of the PIR1 register is set).
- Enable the CCP1 pin output driver by clearing the associated TRIS bit.