NXP P89LPC series, TI MSP430G22 series,  ST ST7LITEU series, Zilog=20
Z8F0xxA series all match your VDD, Gnd pin config in addition to Microchip.

Bill

On 12/6/2015 8:55 PM, 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 teach
> 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
>
>
>

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