A programmable system-on-a-chip integrated circuit device includes a programmable logic block, at least one user non-volatile memory block, and voltage-measuring and control analog and digital circuits on a single semiconductor integrated circuit chip or a flip chip, face-to-face, or other multiple die...http://www.google.com.tw/patents/US7421605?utm_source=gb-gplus-share專利 US7421605 - Programmable system on a chip for power-supply voltage and current monitoring and control
