Chip for operating in multi power conditions and system...

Details Chip for operating in multi power conditions and system... Chip for operating in multi power conditions and system...

2007-11-27

2007-11-27

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S143000, C327S333000

Reexamination Certificate

active

11319562

ABSTRACT:
An apparatus for controlling an I/O interface of a chip operated in multi-power conditions includes an enable signal generator for generating an enable signal based on a chip power down signal; a reference voltage generator for generating a predetermined reference voltage in response to the enable signal; a comparator for determining a voltage required for operating the chip by comparing an external power voltage with the reference voltage in response to the enable signal; and an input/output means for performing an I/O interface function based on the voltage determined according to the comparison result of the comparator.

REFERENCES:
patent: 5894423 (1999-04-01), Ling et al.
patent: 6759872 (2004-07-01), Lai et al.

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