Introduction Parallel and Serial (USB) Downloader

To flash the program into the AVR uC requires an equipment downloader. There are two types parallel downloader and serial downloader. Parallel downloader requires a computer that has a parallel port as DB25. Serial downloader can be used on any computer that has a serial port like a usb port.

Because now it no longer produced a computer that has a parallel port then we should make a serial downloader (usb downloader), advantages of the usb downloader is that it can be used on all computers because all computers have USB ports (portable), fast data delivery due to a computer now has a clock is high (> 1GHz). So do not worry about the delivery will be longer because the computer now has a high speed.

Example USB downloader for AVR

This downloader uses ATmega8, before ATmega8 programmed to change the serial to parallel resulting in MISO, MOSI, SCK, RESET to be connected to its target microcontroller. To program the ATmega8 also requires a minimum system, after a series of programmed and then transferred to the usb downloader circuit.

But before it has a serial downloader, you can also program ATmega8 using parallel downloader, downloader parallel circuit is found the internet for free and does not require a programmable IC.

Posted in: AVR, Downloader, MicroController