A digikey search for SO-8 package (or similar) reveals one or two * Ti - MSP430 - MSP430G2230IDR * Zilog - ENCORE XP - Z8F042ASB020EG On Mon, Dec 7, 2015 at 4:56 AM, embedded systems wrote= : > There are many 8 pin microcontrollers: > > https://octopart.com/parts/category--microcontrollers/number-of-pins--8/s= earch?q=3Dpins&p=3D60&c=3D4300 > > one which may match the power supply pins is a Freescale one: > > http://datasheet.octopart.com/MCHC908QT2VDWE-Freescale-Semiconductor-data= sheet-10568.pdf > > You have to do a very deep analysis. Asking if its worth to...? > Vasile > > On Mon, Dec 7, 2015 at 3:55 AM, Bob Blick wrote: > > > I'm reverse engineering this candy dispenser in order to improve it: > > > > > > > http://www.bedbathandbeyond.com/store/product/sharper-image-reg-motion-ac= tivated-candy-dispenser/204589 > > > > I'm using it as an indoor cat feeder, filled with kibble. It actually > > works pretty well out of the box. It only took a couple of days to teac= h > > the target cat to use it. > > > > It's got a small PC board with discrete phototransistor and IR LED(set > > up as a reflective sensor), micropower 3.3V regulator, LM393 dual > > comparator, three transistors, assorted R's and C's, and an 8 pin SOIC > > with no markings. > > > > The mystery chiip has ground on pin 8 and +3.3 on pin 1. So my first > > guess is a PIC12F508 or some other 8 pin PIC. But are there any other 8 > > pin chips with power and ground in that configuration? > > > > Thanks, Bob > > > > -- > > http://www.fastmail.com - Same, same, but different... > > > > > > -- > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > View/change your membership options at > > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 Jason White --=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 .