Felix wrote: > It seems you cannot rely on power saving features on weird screen > controllers.
Since the 114 uA I measured are close to the typical "operating current" of 180 uA (whatever operation that may mean), I still have some hopes that I simply didn't get the switch to sleep mode right. Those things need experimenting. Sometimes, the lowest power state of a chip is when it's held in reset, sometimes not. Sometimes, you get the lowest leakage if a pin is driven high/low, sometimes if it's floating. These things don't always follow clear rules. > If you're only testing it with a workbench supply, don't forget to test it > with a real coin battery. It would be a pity to produce next prototype and > discover that it would need bigger capacitor ;) Or a bigger battery ;-) Yes, a battery test is of course necessary. The lab supply is very quick to stop excessive current but emulating the battery's (undocumented) internal resistance would be more difficult. - Werner _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
