Data processing system having an auto-ranging low voltage detect

Details Data processing system having an auto-ranging low voltage detect Data processing system having an auto-ranging low voltage detect

1996-12-26

1999-04-13

Wachsman, Hal Dodge

Boots, shoes, and leggings

36452827, 36452833, 702 57, 702 60, 702 64, 702193, 327 77, 327 78, 326 80, G01R 19165

Patent

active

058944230

ABSTRACT:
A Voltage Range Detection Circuit (VRDC) (8) determines the supply voltage range of the integrated circuit. In general, voltage detector (10) determines the voltage level of supply voltage V.sub.DD and stores the result of this determination in storage (12). Resistor network (14), which receives the stored result, configures itself in the proper resistor configuration for the determined supplied voltage such that a compare signal is generated that represents a Variable Low Voltage Detection (VLVD) switch point. Resistor network (14) outputs this generated VLVD switch point signal to a first input of comparator (18) to be compared with the constant level reference voltage output by voltage reference (16) at a second input of comparator (18). When the output of resistor network (14) drops below the reference voltage provided by voltage reference (16), comparator (18) outputs a reset signal to disable the chip because a low voltage condition has occurred. As will be appreciated, this single circuit implementation eliminates the need to provide multiple low voltage detection circuits to sense each of the possible voltage operating ranges.

REFERENCES:
patent: 5382839 (1995-01-01), Shinohara
patent: 5420798 (1995-05-01), Lin et al.
patent: 5444663 (1995-08-01), Furuno et al.
patent: 5497112 (1996-03-01), Hoang
patent: 5675272 (1997-10-01), Chu
patent: 5781043 (1998-07-01), Slemmer
Dallas Semiconductor Corporation 1995, DS1232 MicroMonitor Chip (DS 1232S) (1 pg.). (No date with month).
Dallas Semiconductor Corporation 1995, DS1832 3.3 Volt MicroMonitor Chip (DS1832) (1 pg). (No date with month).
Dallas Semiconductor Corporation 1995, DS1836A/B/C/D/ 3.3V/5V MicroManager 1). (DS 1836 A/B/C/D (pg. 1). (No date with month).

Affiliated with

Also associated with

Rating

Data processing system having an auto-ranging low voltage detect does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data processing system having an auto-ranging low voltage detect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data processing system having an auto-ranging low voltage detect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-226032