Hello!I have a board with the AT89c51ED2 processor. It's work, I see Clock oscillator with my oscilloscope , but doesn't work serial comunication. Somebody Have burnout those ports, and the chip MAX202 connected is burned too (replaced with a new one)
I think some wrong connection with ISP connector. Now I need to replace the microcontroller, but I cant read the firmware.
I Try to use flip , But it give me timeout error . I set the ic to activte the bootloader with the right procedure ( reset during power on, holding PSEN to ground and release reset ).That could confirm serial port damaged (have try with 3 pc)
The question is, could I read the code trought the SPI port?I see on AT89s51 is possible with AVRDUDE, but I don't see any document on AT89C51 , and I cant found in the conf file of the AVRDUDE of my microcontroller.
Thank you for help