Patent ID: 6222765
Filing Date: 2001-04-24
Classification: G11C

Abstract:
A non-volatile flip-flop circuit comprising:a volatile flip-flop having a bit signal and an inverse bit signal;a first and a second non-volatile cell, each having a first terminal and a second terminal with a channel therebetween, a floating gate over a first portion of said channel, and a portion of said second terminal and a control gate over a second portion of said channel;a first switch for supplying said bit signal to said first terminal of said first cell and said inverse bit signal to said first terminal of said second cell;a second switch for supplying said bit signal to said first terminal of said second cell and said inverse bit signal to said first terminal of said first cell;first means for supplying a first voltage to said second terminal of said first and second cells; andsecond means for supplying a second voltage to said control gate of said first and second cells.