A semiconductor integrated circuit chip has an identification circuit connected between a power voltage supply terminal and one of the input terminals of the chip. The identification circuity includes a voltage limiter to limit the input potential difference between the power voltage supply terminal...http://www.google.fr/patents/US5103166?utm_source=gb-gplus-shareBrevet US5103166 - Semiconductor integrated circuit chip having an identification circuit therein
Semiconductor integrated circuit chip having an identification circuit therein
