ULTRA LOW POWER PROGRAMMABLE SUPERVISORY CIRCUIT
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United States of America Patent
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Issued Date -
Feb 25, 2016
app pub date -
Aug 22, 2014
filing date -
Aug 22, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An ultra-low-power supervisory circuits can employ floating gate transistors. In an example, a supervisory circuit can include a reset output circuit, a voltage comparator circuit configured to reset the reset output circuit when a first input voltage falls below a reference voltage, and a watchdog circuit configured to receive a watchdog signal and to reset the reset output circuit if the watchdog signal does not transition within a predetermined watchdog interval. The voltage comparator circuit can include a first floating gate transistor circuit configured to establish a reference current for generating the reference voltage, and the watchdog circuit can include a second floating gate transistor circuit for selecting the predetermined watchdog interval.
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