Determining voltage level validity for a power-on reset...

Details Determining voltage level validity for a power-on reset... Determining voltage level validity for a power-on reset...

2008-07-22

2008-07-22

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S076000, C327S077000, C327S142000, C327S198000

Reexamination Certificate

active

11340389

ABSTRACT:
Determining voltage level validity for a power-on reset condition is described. A supply voltage is applied to an integrated circuit. An oscillating signal is generated responsive to the supply voltage applied. A counting occurs responsive to oscillations of the oscillating signal. A triggering occurs responsive to reaching a first voltage level of the supply voltage for the power-on reset condition. A first count of the counting occurs responsive to the triggering. A second count is selected responsive to the first count. A second level is accepted as having at least met a threshold for the supply voltage responsive to the counting reaching the second count for the power-on reset condition.

REFERENCES:
patent: 5739708 (1998-04-01), LeWalter
patent: 6085327 (2000-07-01), Seng et al.
patent: 6956414 (2005-10-01), Sweet
patent: 7057427 (2006-06-01), Wadhwa et al.
patent: 2005/0189970 (2005-09-01), Nakatake et al.
patent: 2006/0119384 (2006-06-01), Camarota et al.

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