Method and circuit for providing a system level reset...

Details Method and circuit for providing a system level reset... Method and circuit for providing a system level reset...

2006-08-08

2006-08-08

Bui, Bryan (Department: 2863)

Data processing: measuring, calibrating, or testing

Calibration or correction system

Zeroing

C327S143000, C713S340000, C713S500000, C714S022000, C702S085000

Reexamination Certificate

active

07089133

ABSTRACT:
A method and circuit provide a system level reset function for an electronic device. An initial reset function is provided under a low voltage condition of supply voltage, such as occur upon first energizing the electronic device. A tunable reset function is also provided, which can first be asserted at a voltage level setting less precise than that setting becomes upon tuning. Further, a boot-up reset function is provided, which provides its reset function at a voltage level setting that is set according to a calibration. Calibration can be based on data stored in a non-volatile memory, and can involve a checksum operation. The electronic device, a microcontroller for instance, is held in a reset state with any of the initial, tunable, and boot-up reset functions.

REFERENCES:
patent: 5564010 (1996-10-01), Henry et al.
patent: 5850156 (1998-12-01), Wittman
patent: 6141764 (2000-10-01), Ezell

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