If so, it absorbs the program code from the computer and transfers it into the AVR chip, in a specific location so as not to overwrite the bootloader. If the computer isn’t trying to upload any code, ...

You can find the pinout diagrams for both interfaces in the AVR JTAGICE mkII user guide or online. You also need to provide power to your microcontroller and set the appropriate fuse bits and ...

ATmega microcontrollers are some of the most well known 8-bit microcontrollers due to their use on Arduino Uno and Arduino MEGA 2560 boards. The smaller and cheaper ATtiny devices, Figure 1, are also ...