Substrate bias generator in semiconductor memory device

Details Substrate bias generator in semiconductor memory device Substrate bias generator in semiconductor memory device

2005-04-19

2005-04-19

Cunningham, Terry D. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S537000, C365S226000

Reexamination Certificate

active

06882215

ABSTRACT:
A substrate bias generator which makes device characteristics stable by supplying a predetermined negative voltage to a substrate and minimally reduces current consumption during a self refresh mode. The substrate bias generator comprises a substrate voltage level detector for inputting a substrate voltage and outputting a signal which drives an oscillator in response to the input level, and a controller for inputting a chip active enable signal, a self refresh mode enable signal and an output signal of the substrate voltage level detector and controlling a switching operation of the substrate voltage level detector in response to the input level.

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Full English Translation of Korean Application No. 13276 (23 pages text, 8 pages drawing)(Jul. 1993).

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