Battery monitor with software trim

Details Battery monitor with software trim Battery monitor with software trim

1998-07-06

2000-09-12

Wu, Daniel J.

Communications: electrical

Condition responsive indicating system

Specific condition

340660, 340661, 324426, 324427, 455127, 455343, G08B 2100

Patent

active

061183849

ABSTRACT:
A battery monitor with programmable voltage references. The battery monitor includes a comparator circuit connected to a battery for receiving a voltage level thereof and to a voltage reference circuit for receiving a at least one reference voltage generated thereby. A trim circuit is connected to the voltage reference circuit for adjusting the reference voltage(s) and generated by the voltage reference circuit. The comparator circuit compares the voltage level of the battery with the reference voltage(s) generates an output based on the relative value of the battery voltage compared to the reference voltage(s). The trim circuit is programmable and includes a microprocessor connected to a programmable register and a memory. The microprocessor obtains trim data from the memory and writes the trim data to the programmable register.

REFERENCES:
patent: 5432741 (1995-07-01), Devore et al.
patent: 5563549 (1996-10-01), Shieh
patent: 5631537 (1997-05-01), Armstrong
patent: 5652721 (1997-07-01), McIntyre
patent: 5761206 (1998-06-01), Kackman
patent: 5880996 (1999-03-01), Roohparvar
Graf, Encyclopedia of Electronic Circuits, vol. 1, p. 157, 1985.

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