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On LPC 2138 boards -SECTORS ERASING PROBLEM

brahma reddy

Hi

I am downloading my application using LPC2000 v2.2.1 on to lpc2138 board with flash 512k.And insted of deleting entire device(flash) i am selecting particular sectors to be deleted(for example 0-14)but it is not allowing me to do and it is throwing an error "cannot communicate with test board" and at the down it is displaying "lpc2000 flash erase failed".

Please suggest me how to solve this problem

Thanks
Reddy

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  • 0 in reply to brahma reddy

    I expect the difference is that the JTAG interface will use IAP to erase sectors, while the serial interface uses the ISP monitor.

    Remember that your application can read sectors even if you have read protection. The protection is there to stop the ISP interface from dumping information.

    To get even higher protection levels, you must also kill the JTAG interface.

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  • 0 in reply to brahma reddy

    I expect the difference is that the JTAG interface will use IAP to erase sectors, while the serial interface uses the ISP monitor.

    Remember that your application can read sectors even if you have read protection. The protection is there to stop the ISP interface from dumping information.

    To get even higher protection levels, you must also kill the JTAG interface.

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