If you know that it is a Microchip product and it is in a keyfob, it=20
very well may be one the Keeloq products.
On 2/3/2014 12:38 PM, Luis Moreira wrote:
> Hi Guys,
> Looking for some info on a microchip device, the part number on it is
> HCS4121. I not even know what it is, I presume it is a microcontroller or=
 a
> dedicated frequency generating chip. A datasheet would be nice.
> This is from a car remote fob.
> Thank you.
> Best Regards
>                          Luis

--=20
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