Circuit for enabling dual mode safe power-on sequencing

Details Circuit for enabling dual mode safe power-on sequencing Circuit for enabling dual mode safe power-on sequencing

2005-10-27

2008-10-21

Perveen, Rehana (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

C713S310000, C713S320000, C713S330000, C713S340000

Reexamination Certificate

active

07441132

ABSTRACT:
A circuit that enables a safe power-on sequencing is described. The circuit enables a processor to be powered by an internal or external voltage source. The circuit detects for the presence of an external voltage regulator. If an external voltage generator is not providing a valid voltage source to the processor, the circuit enables an internal voltage regulator to provide a stable voltage source.

REFERENCES:
patent: 4843224 (1989-06-01), Ohta et al.
patent: 6424128 (2002-07-01), Hiraki et al.
IEEE 100: The Authoritative Dictionary of IEEE Standards Terms, 2000, IEEE, 7thEdition, p. 872.

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