If you find yourself in an exception handler, probably looping indefinetly because it is not really a "handler", then you are not latched up, yoou are executing code. Richard --- In lpc2000@yahoogroups.com, "moostieuk" <moostieuk@y...> wrote: > > 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 Richard
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