POWER MANAGEMENT CIRCUIT AND METHOD

• Main Authors: Trecarichi, CalogeroAndrea, Polisi, Vincenzo
• Format: Patent
• Language: English
• Published: 13.04.2023
• Subjects: BASIC ELECTRONIC CIRCUITRY; CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERATION OF NOISE BY SUCH CIRCUITS; GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER; INFORMATION STORAGE; PHYSICS; STATIC STORES; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

In an embodiment, an electronic circuit includes: a supply management circuit for receiving an input supply voltage and providing a first supply voltage; and a main circuit configured to: when the input supply voltage becomes higher than a first threshold, cause the electronic circuit to transition into an initialization state in which an oscillator is enabled and configuration data is copied from an NVM to configuration registers, and then to transition into a standby state in which the oscillator is disabled and content of the configuration registers is preserved by the first supply voltage, and, upon reception of a wakeup event, cause the configuration data from the configuration registers to be applied to the first circuit, and cause the electronic circuit to transition into an active state in which the first oscillator is enabled and the first circuit is configured to operate based on the configuration data.