USB 8051/AVR programmer

Here’s the free circuit which can program 89S series microcontroller through USB. It just needs an programmed AVR Atmeg8 microcontroller.

Even though the Atmega8 does not have an USB interface an software USB is created.

The software is created by Fischl, its available at :http://www.fischl.de/usbasp/

But this programmer supports only AVR chips and now the Atmega8 microcontroller program is changed to support the AT89S series micros.

You can program the following 89 series chips by using this programmer

AT89S51, AT89S52, AT89S53, AT89S8252, AT89S8253, AT89S2051, AT89S4051 and AVR chips

Programmer Circuit

Basic 8051 ISP circuit

Procedure:

1. Download the Hex file into the Atmega8
2. Connect the ISP lines to the AT89S series chip
3. Don’t forget to connect the crystal & power supply to the AT89S chip
4. Connect the hardware to the PC USB

Downloads
PC Software: progisp172.zip
AVR Code: usb51.zip

If you want to program 89S52 with AVR dude then
Add this text into your avrdude.conf(\winavr\bin\)
my_conf.txt

If you got any doubts to make this programmer just post it here.