The programmer onboarded a brand new ATMega8A AU chip, which supports all ASP chips of the AT89S51/52 microcontroller AVR; The output port is an ATMEL standard port; There is a USB power supply and support for a target board voltage of 5V, which can be selected through a jumper cap connection; Automatic speed regulation firmware, the downloader will automatically track the chip frequency to be programmed, automatically change the speed, and achieve automatic speed regulation; Reserved programming Interface for Programming, Users can upgrade downloader firmware