Power supplying circuit and phase-change random access...

Details Power supplying circuit and phase-change random access... Power supplying circuit and phase-change random access...

2008-10-15

2010-10-19

Elms, Richard (Department: 2824)

Static information storage and retrieval

Powering

C365S227000

Reexamination Certificate

active

07817489

ABSTRACT:
A power supplying circuit (PSC) and a phase-change random access memory (PRAM) including the PSC. According to an aspect of the invention, the PSC includes: a first voltage generator configured to output a first voltage to a first terminal; and a second voltage generator configured to output a second voltage to a second terminal, the second voltage generator including: a voltage pump unit configured to output the second voltage based on a clock signal and a pump control signal; a pump output detector coupled to the voltage pump unit, the pump output detector configured to output a pump output detection signal; and a discharging unit coupled to the voltage pump unit, the discharging unit configured to discharge a level of the second voltage to a predetermined level in response to a discharge signal. Embodiments of the invention may prevent write and/or read malfunctions that can occur due to changes in the level of a voltage supplied to PRAM cell blocks.

REFERENCES:
patent: 6873538 (2005-03-01), Hush
patent: 2008/0253215 (2008-10-01), Akiba et al.
patent: 2009/0039840 (2009-02-01), Lee
patent: 10020070008216 (2007-01-01), None
patent: 100699872 (2007-03-01), None

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