Circuit and method of limiting leakage current in a memory circu

Details Circuit and method of limiting leakage current in a memory circu Circuit and method of limiting leakage current in a memory circu

1997-05-21

1999-04-27

Nelms, David

Static information storage and retrieval

Powering

36518518, 36518533, G11C 800

Patent

active

058986332

ABSTRACT:
A current limiting circuit (70) controls the leakage current of a memory circuit (24) of a portable wireless device (10) while operating in a standby mode. A first semiconductor well (64) isolates the memory circuit (24) that is disposed in a second semiconductor well (66) from a substrate (62). In the standby mode the current limiting circuit (70) is switched to a non-conduction mode that limits the leakage currents of a diode formed by the first semiconductor well (66) with the second semiconductor well (64) and a diode formed by the second semiconductor well (64) with the substrate (62).

REFERENCES:
patent: 4903093 (1990-02-01), Ide et al.
patent: 5497023 (1996-03-01), Nakazato et al.
patent: 5557568 (1996-09-01), Miyamoto et al.
patent: 5640002 (1997-06-01), Ruppert et al.

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