A semiconductor device which may be used as an ID chip and data may be rewritten only one time. In addition, a semiconductor device may be used as an ID chip and data may be written except when manufacturing the chip. The invention has a modulating circuit, a demodulating circuit, a logic circuit, a...http://www.google.fr/patents/US7699232?utm_source=gb-gplus-shareBrevet US7699232 - Semiconductor device
