Duplicate AVR ATMEGA16U2 Microcontroller Firmware from its flash and eeprom memory, the fuse bit of mcu atmega16u2 mcu will be broken and embedded heximal will be extracted from original microprocessor atmega16u2;
Timer/Counter0 is a general purpose, single channel, 8-bit Timer/Counter module. A simplified block diagram of the 8-bit Timer/Counter is shown in Figure 15-1. For the actual placement of I/O pins, refer to “Pin Configurations”on page 9. CPU accessible I/O Registers, including I/O bits and I/O pins, are shown in bold.
The Timer/Counter (TCNT0) is an 8-bit register. Interrupt request (abbreviated to Int. Req. in the figure) signals are all visible in the Timer Interrupt Flag Register (TIFR) when copy atmega162pa microcontroller code. All interrupts are individually masked with the Timer Interrupt Mask Register (TIMSK).
TIFR and TIMSK are not shown in the figure since these registers are shared by other timer units. The Timer/Counter can be clocked internally or via the prescaler, or by an external clock source on the T0 pin.
The Clock Select logic block controls which clock source and edge the Timer/Counter uses to increment its value. The Timer/Counter is inactive when no clock source is selected in the process of cracking atmega16 mcu flash memory. The output from the clock select logic is referred to as the timer clock (clkT0).