Other

Spansion LLC.

Kurihara Kazuhiro

Tien-Chun Yang

Pau-Ling Chen

Ming-Huei Shieh

A system and method for column selection in a non-volatile memory cell array is disclosed. A group of memory cells is arranged in a rectangular array having rows (X-dimension) and columns (Y-dimension). Within a row, the sources and drains of the memory cells are connected to form a linear chain. A common word line is coupled to each gate in the row. A separate column line is coupled to each node between adjacent memory cells of the chain. A four column Y-decoder is used to select column lines for sense operations. A voltage source is applied to two of the four column lines during the sense operation. Current on one of the column lines may be sensed to provide a measurement for read or verification.

System and method for Y-decoding in a flash memory device

A path gate driver circuit of the present invention includes a shunt stage, a level shifter stage, a pull-up stage, and an output stage. The shunt stage has a control terminal coupled to a supply, and an input terminal coupled to a control signal path. The level shifter stage has a first control terminal coupled to the control signal path, a second control terminal coupled to an output terminal of the shunt stage, a first input terminal coupled to a boost-low supply, and a second input terminal coupled to a boost-high supply. The pull-up stage has a control terminal coupled to an output terminal of the level shifter stage, and an input terminal coupled to the boost-high supply. The output stage has a first control terminal coupled to the output terminal of the shunt stage and an output terminal of the pull-up stage, a second control terminal coupled to the control signal path a first input terminal coupled to the boost-low supply, and a second input terminal coupled to the boost-high supply. A boosted control signal is provided at the output terminal of the output stage in response to the control.

Growing community of inventors

Sunnyvale, CA, United States of America

Kurihara Kazuhiro