Semiconductor device

Details Semiconductor device Semiconductor device

2008-12-15

2010-11-09

Mai, Son L (Department: 2827)

Static information storage and retrieval

Systems using particular element

Amorphous

C365S148000

Reexamination Certificate

active

07830706

ABSTRACT:
A phase change memory capable of highly reliable operations is provided. A semiconductor device has a memory array having a structure in which memory cells are stacked including memory layers using a chalcogenide material and diodes, and initialization conditions and write conditions are changed according to the layer in which a selected memory cell is positioned. The initialization conditions and write conditions (herein, reset conditions) are changed according to the operation by selecting a current mirror circuit according to the operation and by a control mechanism of a reset current in a voltage select circuit and the current mirror circuit.

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Kwang-Jin Lee et al., “A 90nm 1.8V 512Mb Diode-Switch PRAM with 266MB/s Read Throughput”, IEEE International Solid-State Circuits Conference, Digest of Technical Papers, USA, 2007, pp. 472-473 and 616.

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