Patent ID: 6140837
Filing Date: 2000-10-31
Classification: H01L

Abstract:
A programmable device, comprising:a plurality of digital logic elements;a programmable interconnect structure comprising antifuses, the antifuses being programmable to connect selected ones of the digital logic elements together;a plurality of programming drivers, each of the programming drivers comprising a charge pump;a first power input terminal coupled to supply the digital logic elements with a first supply voltage on the first power input terminal during normal circuit operation;an oscillator outputting a first oscillating signal to the charge pumps of the programming drivers, the first oscillating signal switching between a ground potential and a second supply voltage during antifuse programming; anda second power input terminal coupled to supply the oscillator with the second supply voltage during antifuse programming, the second supply voltage being on the second power input terminal during antifuse programming, the second power input terminal being electrically isolated from the first power input terminal.