Microelectromechanical sensor device with improved power consumption

An electronic apparatus, comprising:

• a battery configured to generate an external power supply voltage;
• a microelectromechanical sensor device including:
• a detection structure;
• and
• electronic circuitry coupled to the detection structure, the electronic circuitry configured to receive, in a case where the microelectromechanical sensor device is powered, the external power supply voltage, the electronic circuitry including:
• a voltage regulator configured to generate a regulated voltage having a different value from the external power supply voltage;
• at least one voltage domain configured to be powered by the regulated voltage;
• and
• a power supply management core configured to be always powered by the external power supply voltage in the case where the microelectromechanical sensor device is powered, and configured to control the voltage regulator so as to interrupt power supply to the at least one voltage domain and implement a first power-down condition of the microelectromechanical sensor device;
• and
• a control unit configured to generate power supply management instructions for the power supply management core.

A power supply management method, comprising:

• receiving, by electronic circuitry of a microelectromechanical sensor device, an external power supply voltage in a case where the microelectromechanical sensor device is powered, the microelectromechanical sensor device including a detection structure coupled to the electronic circuitry, the electronic circuitry including a voltage regulator, at least one voltage domain, and a power supply management core;
• generating, by the voltage regulator, a regulated voltage having a different value from the external power supply voltage;
• powering, by the voltage regulator, the at least one voltage domain with the regulated voltage;
• and
• controlling, by the power supply management core, the voltage regulator to interrupt power supply to the at least one voltage domain and implement a first power-down condition of the microelectromechanical sensor device.