On 2012-06-07, at 15:41, Gábor Lénárt wrote: > while I switched off the power itself (Vcc). The odd > thing: the circuit still worked (!!) [..] In forums people say it's > called "parasite power" that it can > work even without Vcc connected, > However this clearly shows, that not every IC will "keep in quiet") > without > the Vcc pin either ... > > but if someone knows what is this "parasite power thing" I would > be happy to get to know I think this is not so uncommon. We had similar situation at work when developing an automotive remote controller and wanted to save some microamps in order to get longer standby time. Cutting off the power in standby mode didn't help a bit. The chip was still draining current through functional lines and pretending that nothing happened. I don't think this would apply to the old ROMs we talk about but as Ruud and Gerrit mentioned, this can't be excluded. -- SD! Message was sent through the cbm-hackers mailing listReceived on 2012-06-07 20:00:48
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