Infineon Technologies is combining its proven automotive expertise with its patented glass-silicon-glass MEMS sensor for the automotive tire pressure monitoring systems (TPMS) market to launch the XENSIV SP49 tire pressure monitoring sensor.
The sensor integrates MEMS and ASIC sensors and provides smart tire features that enable advanced tire pressure monitoring systems. It features a powerful 32-bit Arm M0+ core, large flash memory and RAM, low power monitoring (LPM), and optimized fast acceleration detection.
The SP49 is ideal for intelligent tire functions such as automatic tire position detection, tire inflation assistance, tire burst detection and load detection.
The SP49 is a pin-for-pin replacement for Infineon's high-end SP40 TPMS products. With its hardware master/slave I²C interface and software-simulated UART, SPI, and PWM interfaces, the SP49 is ideal for sub-1GHz and scalable to BLE TPMS.
Available from ASIL-A, the sensor offers a high level of integration and is optimized to perform all functions required to implement a modern TPMS module.
With its integrated microcontroller, sensors and convenient peripherals, the SP49 requires only a few passive components to form a complete TPMS sensor unit. The device is designed for low power consumption, making it ideal for battery-powered applications.
In addition to the ability to generate a wake-up call from the integrated interval timer, SP49 products are suitable for stand-alone remote pressure sensing solutions that require low power consumption. In these applications, the LF receiver with wake-up capability and best-in-class sensitivity enables on-demand measurements.