Identify an IC Found in a Garage Door Opener

Looking through the Microchip KeeLoq "code hopping encoder designed for secure Remote Keyless Entry (RKE) systems" datasheets, I'm 99% sure that this is one of them, either rebranded for a customer, or a close custom version.

Look for the HCS3xx series. The Packaging Information for those chips show the top code use. 33192c would be the end user custom code.

That is a microchip logo. They bought a Israeli rolling code generator company for garage openers in the mid -90's. So that might help you. Called KeeLoq (I think)