You can try to search in any search engine like www.google.com , just type any name i.e. T89C51 or even only 2051( which stands for AT89C2051 ), and
you find the desired information easily saving much of your time.
More interesting and useful will be to put into database information about new products (like the last one about Cygnal new 3mmx3mm package mcu) from any popular manufacturer.With history.
Maybe the manufacturers will be interested in it and will even sponsor it partly.