We appear to have this problem on the LPC2114. Our prototype board appears to latch into a state sometimes on powerup. If you take the reset line down and back up when in this state the processor still doesn't come up. Interestingly, if you attach the debugger to the processor it's sitting in the "undefined instruction" handler, if you tell it to jump to the reset handler it does so and starts to execute but then finds it's way back into the undefined instruction handler.... This problem is most noticable when flicking the power on and off rapidly. Philips, I think we have a problem...... --- In lpc2000@yahoogroups.com, "g2100g" <g2100g@e...> wrote: > As described in the Errata Sheet, available on Philips web site: "The > last letter in the third line (field `R') will identify the device > revision." > > --- In lpc2000@yahoogroups.com, "jamesradix1969" > <jamesradix1969@y...> wrote: > > > > How can you tell which version of the chip you have? Is it part of > > the printed markings on the chip? Do other family members (2129) > > have this problem too? > > Thanks, > > James
Message
Re: Power Supply Sequencing - Latchup - FOLLOWUP
2005-01-19 by moostieuk
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