Patent ID: 7609570
Filing Date: 2009-10-27
Classification: G11C

Abstract:
1. A charge sharing circuit for first and second pairs of complementary signal lines comprising: a capacitor coupled between first and second circuit nodes; a first input circuit having an output coupled to a first one of said first pair of complementary signal lines, said first input circuit being coupled between a supply voltage source and a second one of said first pairs of complementary signal lines; a second input circuit having an output coupled to said second one of said first pair of complementary signal lines, said first input circuit being coupled between said supply voltage source and said first circuit node; a first switching device for selectively coupling said first one of said first pair of complementary signal lines to said first circuit node; a third input circuit having an output coupled to a first one of said second pair of complementary signal lines, said third input circuit being coupled between a reference voltage level and a second one of said second pair of complementary signal lines; a fourth input circuit having an output coupled to said second one of said second pair of complementary signal lines, said fourth input circuit being coupled between said reference voltage level and said second circuit node; a first output circuit coupled to said first and second ones of said first pair of complementary signal lines and said second circuit node; a second output circuit coupled to said first and second ones of said second pair of complementary signal lines and said first circuit node; and a second switching device for selectively coupling said first one of said second pair of complementary signal lines to said second circuit node.