Device and method for varying bit line precharge voltage in semi

Details Device and method for varying bit line precharge voltage in semi Device and method for varying bit line precharge voltage in semi

1999-04-22

2000-07-04

Elms, Richard

Static information storage and retrieval

Read/write circuit

Data refresh

365203, G11C 700

Patent

active

06084812&

ABSTRACT:
Device and method for varying a bit line precharge voltage in a semiconductor memory, in which the bit line precharge voltage is varied with a chip temperature for improving a refresh characteristic, reducing a power consumption, the device including a temperature detector for detecting a change of a chip temperature of the semiconductor memory, a bit line precharge voltage generator for varying and forwarding the bit line precharge voltage in response to a temperature detection signal provided from the precharge voltage generator, and a sensing unit for receiving the bit line precharge voltage provided from the precharge voltage generator and sensing a data from the memory cell, the method including the steps of detecting a change of a chip temperature of the semiconductor memory, and dropping the bit line precharge voltage before forwarding the bit line precharge voltage if the chip temperature of the semiconductor memory is higher than a preset temperature.

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patent: 5375093 (1994-12-01), Hirano
patent: 5532968 (1996-07-01), Lee
patent: 5903506 (1999-05-01), Blodgett

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