A semiconductor integrated circuit receives and transmits signals at more than one set of VH/VL voltage levels. The integrated circuit includes a core region, an input pad, an output pad, peripheral circuitry, and a plurality of power supply lines each at power supply voltage levels V1, V2, V3 . . ....http://www.google.fr/patents/US5646548?utm_source=gb-gplus-shareBrevet US5646548 - Efficient method and resulting structure for integrated circuits with flexible I/O interface and power supply voltages
Efficient method and resulting structure for integrated circuits with ...
