The programmer's onboard new original imported ATMega8A-AU chip supports all ASP chips of AT89S51/52 MCU AVR. The output port is an ATMEL standard port. There is USB power supply and support target board voltage 5V, which can be selected by jumper cap connection. AUTOSPEED can automatically adjust the firmware, the downloader will automatically track the chip frequency to be programmed, and automatically change the speed to achieve automatic speed regulation. The PROGRAMMING programming interface is reserved and the user can upgrade the downloader firmware. Suitable for WIN8.1/8/7/XP 32/64 bit systems.

AT89S51 and S52 series pin and download line corresponding connection definition

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On Dec 10, 2023 at 19:51:30 PST, seller added the following information: