Method and apparatus for a voltage responsive reset for EEPROM
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 9, 2002
Grant Date -
N/A
app pub date -
May 2, 2000
filing date -
Jun 2, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An under voltage lockout RESET circuit is connected to the RESET terminal of a EEPROM. The EEPROM is used in a system which may include a computer or processor and which may be used in space. The under voltage lockout RESET circuit maybe an under voltage lockout circuit used on a LinFinity SG1526/B or a Unitrode UC1526 regulating pulse width modulator which maintain the RESET voltage low at all values of power supply voltage source voltage less than a predetermined level. In one embodiment the under voltage lockout RESET circuit output voltage does not have a 'floating voltage' which rises to a level higher than its value when a comparator initially senses that a power supply voltage source voltage is less than the predetermined amount. This is a flat RESET characteristic under voltage lockout. The RESET circuit in combination with the EEPROM and computer has particular utility in space applications when a 'floating voltage' may be undesirable and may cause failure in a satellite.
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