Write driver circuit for phase-change memory, memory...

Details Write driver circuit for phase-change memory, memory... Write driver circuit for phase-change memory, memory...

2011-01-04

2011-01-04

Mai, Son L (Department: 2827)

Static information storage and retrieval

Addressing

Particular decoder or driver circuit

C365S163000, C365S189090

Reexamination Certificate

active

07864619

ABSTRACT:
A write driver circuit for a memory that includes phase-change memory cells changeable between a RESET state resistance and a SET state resistance in response to an applied current pulse, the write driver circuit including a write current level adjusting unit configured to determine first to n-th SET state current levels in response to a SET state current level signal, where n is an integer greater than 1, and configured to determine a RESET state current level in response to a RESET state current level signal, and a write current output unit configured to generate one of a SET state current pulse and a RESET state current pulse corresponding to a SET state current level or a RESET state current level determined by the write current level adjusting unit.

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