What is the difference between AT89C51CC03UA and AT89C51CC03CA processors with CAN controller on board? Both of them seems to share datasheet but I suspect that there is some crucial distinction between them. Any help greatly appreciated.
Thanks for your pointer. I understand now, that those microcontrollers differ with standard bootloader, either CAN bootloader or UART. Could You please help me with comprehension of that concept? As far as I understand it, after reset, if some hardware prerequirements are met, microprocessor starts execution at some special position in memory. And there is code to activate serial port in UA case and CAN controller in CA case by means of main program can be fetched. Is that correct or need some amendments? If the former, is there a possibility to reprogram boot area of CA controller to fetch program via serial port?