I have also seen lots of errata sheets on the Philips web.

Today its typical, that new devices are delivered as green bananas.
So I would never trust a manufacturer, which has no errata sheets on the web. I use never products of such manufacturers.


I use the following Atmels over years for mass production without any problems:

AT89C2051
AT89C4051
AT89S8252
T89C51CC01
ATTINY26 (no 8051)


Peter