Programming 89v51Rd2 problem

Started by dani, August 13, 2011, 05:00:22 AM

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Dear all,
i want to change the bootloader of 89v51rd2 so i had gone to isp->update bootloader and then
given updated file name and press update.
i could able to update one microcontroller but when i tried with other microcontroller(89v51rd2)
it stopped in erasing part and not able to come out of it.
now i couldn't put microcontroller in isp mode nor i could able to put it into execution mode.
even after resetting it's not getting programmed

Andy Ayre

Sounds like perhaps the power supply had a glitch during programming. It's hard to tell without probing the board and your best chance now might be a parallel programmer.

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