Allen Mulvey wrote: > Sent: Tuesday, 3 February 2015 1:06 PM > To: 'Microcontroller discussion list - Public.' > Subject: RE: [EE] ICs working with Vdd/Vcc disconnected? >=20 > This is a documented feature of the DS18B20 digital temperature sensor. > They call it "parasite power." Yeah, I knew about it from 1-wire devices - but didn't know that it was an "undocumented feature" of chips with separate power supply pins! Cheers, David --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .