Extract Microchip MCU PIC16F1458 Eeprom Code can be realized through the non-invasive attack method, since the Timer1 can be configured for 16-bit reads and writes, as a result of that, first of all RTCisr (show in below picture) of application code routine will demonstrates a simple method to increment a counter at one-second intervals using an Interrupt Service Routine.

Incrementing the TMR1 register pair to overflow triggers the interrupt and calls the routine, which increments the seconds counter by one by MCU Cracking. Additional counters for minutes and hours are incremented as the previous counter overflow when Extract Microchip MCU PIC16F1458 Eeprom Code.

Since the register pair is 16 bits wide, counting up to overflow the register directly from a 32.768 kHz clock would take 2 seconds which is the shortest time length for Copy Microcontroller PIC16C711 Flash. To force the overflow at the required one-second intervals, it is necessary to preload it. The simplest method is to set the MSb of TMR1H with a BSF instruction.

Note that the TMR1L register is never preloaded or altered; doing so may introduce cumulative error over many cycles. For this method to be accurate, Timer1 must operate in Asynchronous mode and the Timer1 overflow interrupt must be enabled (PIE1<0> = 1), as shown in the routine, RTCinit for the purpose of Read MCU PIC16C717 Eeprom. The Timer1 oscillator must also be enabled and running at all times.