They absorbed Temic, a.k.a. Telefunken's IC operation. They did at least a half a dozen "single chip radio" parts.
Atmel's website is where I ended up when I was looking for the IC datasheet to repair an '80s vintage GE under the shelf digital clock radio.
Mark Zenier snipped-for-privacy@eskimo.com Googleproofaddress(account:mzenier provider:eskimo domain:com)