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Philips 8031 chip keeps reseting

My company is using Philips 8031 chip. The
new batch of chips we received, every one of
them keeps reseting itself when when
it come accross the PRINTF statement !!!
The c-code works fine with the old 8031 chip !!

Does anybody in this forum experience such
problem? The PRINTF statement we are using
is to send out a stream of characters to
the RS232 port. It is a SOFTWARE routine, we
are not used the built-in UART, could this
be the problem? however, I was very confused why the old chip works !!!

Thanks in advance, any helps or suggestions are veru
appreciated.

Parents
  • Which chip are you using? Does it have a watchdog timer? Was it disabled by default in the original chip but now enabled?

    If you have software that works AND if you have not changed it AND if you use the same EPROM or HEX file that worked with the old chip AND if it doesn't work with the new chip...

    ...then, there is something different with the new chip.

    Have you checked with Philips to see if there are any differences between these parts?

    Jon

Reply
  • Which chip are you using? Does it have a watchdog timer? Was it disabled by default in the original chip but now enabled?

    If you have software that works AND if you have not changed it AND if you use the same EPROM or HEX file that worked with the old chip AND if it doesn't work with the new chip...

    ...then, there is something different with the new chip.

    Have you checked with Philips to see if there are any differences between these parts?

    Jon

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