MICROELECTROMECHANICAL SENSOR DEVICE WITH IMPROVED MANAGEMENT OF A POWER-DOWN CONDITION
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United States of America Patent
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Issued Date -
Jun 20, 2024
app pub date -
Nov 17, 2023
filing date -
Nov 17, 2023
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Abstract
A microelectromechanical sensor device has a detection structure and an associated electronic circuitry, configured to receive, when the device is powered, an external power supply voltage and provided with a voltage regulator generating a regulated voltage and with at least one voltage domain powered by the regulated voltage. The electronic circuitry has a power supply management core, always powered by the external power supply voltage and which controls the voltage regulator to selectively interrupt the power supply of the voltage domain to implement: a first power-down condition wherein the voltage regulator is disabled; and a second power-down condition wherein the voltage regulator is enabled to power the aforementioned voltage domain through the regulated voltage, the first and the second power-down conditions being associated with absence of data acquisition and/or processing by the sensor device. The power supply management core automatically enables the first or second power-down condition upon a first power-on of the sensor device, as a function of a configuration signal, programmable, for example, during a factory calibration step.
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