Dead DRO

[Steve RowbothamParticipant @steverowbotham77083]

Thanks for the offer of the data sheet Joseph but as you say not really of use without the CPU running. I too find it odd for the processor to die at this stage of the ‘bathtub’ curve, it has been in use almost daily for about 3 years so way beyond infant mortality but nowhere near end of life – my only residual doubt is the oscillator. Whilst you suggested the oscillator looked fine based on the AC coupled waveform I posted a few posts back, the fact is that both OSC pins have a bias of 1.6V, with a 0.22V pk-pk 8MHz on OSC OUT and 0.36V pk-pk 8MHz on OSC IN – is this OK to drive the CPU clock?

[Author]

Posts