公开(公告)号：US20230299438A1

公开(公告)日：2023-09-21

申请号：US17697143

申请日：2022-03-17

Applicant: Infineon Technologies AG

Inventor： Dan-Alexandru MOCANU ,  Bogdan BUMBACEA ,  Ilie-Ionut CRISTEA ,  Radu MIHAESCU

IPC: H01M50/578 ,  G01R31/396

CPC classification number: H01M50/578 ,  G01R31/396 ,  G06F13/4282

Abstract: A sensor device includes a pressure sensor configured to measure an internal air pressure and generate a sensor signal representative of the measured internal air pressure; a serial peripheral interface (SPI) configured to receive SPI commands; a wake-up terminal configured to output fault signals; and a processing circuit. The processing circuit is configurable between a normal running mode and a low power monitoring (LPM) mode. In LPM mode, the processing circuit is configured to alternate between a sampling phase during which the processing circuit evaluates the sensor signal and a powered-down phase during which the processing circuit is in a low power state. The processing circuit is configured to monitor for at least one SPI communication fault corresponding to information received on the SPI, generate a communication fault signal in response to detecting the at least one SPI communication fault, and output the communication fault signal from the wake-up terminal.