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Programm ISP p89LPC935

Dídac Hernández

I have problems when i program my device. I only can program once, the next intent the devices don't respond. The signal of RST is correct, and i don't understand where is the problem.

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    The first time is easy, the chip arrives from the factory in ISP mode.

    All times thereafter you need to "kick the chip into ISP". The Keil board MCB900 has the needed HARDWARE circuitry, I would ignore that and install NoTouch at the first load.

    NoTouch can NOT 'save' a chip, it MUST be included in the first losd.

    For development you should install NoTouch in 'backdoor mode' as well.

    For NoTouch read NoTouch for the P89C51Rx2 for the text and use, of course, the MoTouch for LPC93x for your chip.

    All can be found at the FlashMagic forum.

    Erik

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  • 0

    The first time is easy, the chip arrives from the factory in ISP mode.

    All times thereafter you need to "kick the chip into ISP". The Keil board MCB900 has the needed HARDWARE circuitry, I would ignore that and install NoTouch at the first load.

    NoTouch can NOT 'save' a chip, it MUST be included in the first losd.

    For development you should install NoTouch in 'backdoor mode' as well.

    For NoTouch read NoTouch for the P89C51Rx2 for the text and use, of course, the MoTouch for LPC93x for your chip.

    All can be found at the FlashMagic forum.

    Erik

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