T
Thanks, though i mean just a very simple test likeBut you'll get a NRE bill months before you see any
product.
But the boards and software are all the "same", and one of them works perfectly...so its surely unlikely to be a design fault?it looks more like some fundamental design fault.
Thanks, as you know, optical inspection is off the menu for us because its a 28QFN package...the pads are under the component body.Solder joint quality can be perfectly assessed by optical inspection or X-ray. In case of doubt make a microsection of a failed board.
optical inspection is off the menu for us because its a 28QFN package...the pads are under the component body.
Thanks yes, it is indeed through a loop of tracks that come back to the vias in the centre gnd pad....i am not sure why they didnt just link it from 16 to centre pad though.Pin 16 worries me.
Why isn't it connected to the middle ground area. It looks like the two VSS pins are not linked together unless it is through a loop of tracks somewhere off the image.
Thanks, the PGM issue we sorted out now, but still have the problems...we have defined it LVP OFF and have the pin declared as output....btu we still have the malfunction issue.As predicted, there is no pull-down on PGM,
Thansk, yes , we do the 4k7 pullup on vpp as a wired in external modification...as well as the 10n cap top ground from Vpp pin.(no) pull-up on VPP
Thanks, do you mean that there's no series resistors into the micro pins?static protection on the other pins
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