nadafsanaulla
Newbie level 4
I want to program SST89E516RD2 chip by using ATMEGA324PA so I want some help abt how to do it and how will be the connections
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The processor has the option to erase or rewrite the boot block. Maybe he knows that he did. I agree that there are other possible explanations.why does the OP assume that the "boot loader has been deleted". Perhaps the device is damaged electrically...
No JTAG available with the chip as far as I see.
There's a programming specification available from Microchip https://ww1.microchip.com/downloads/en/DeviceDoc/25094A.pdf
Any specific questions related to the document?
Personally I think, using an industry standard parallel programmer is the straightforward way to access the flash. But designing your own programmer is possibly of course.
Good luck.