The sensor integrates MEMS sensors and ASIC and provides smart tyre features that enable advanced tire pressure monitoring systems. It features a powerful 32-bit Arm M0+ core, a large flash memory and RAM, Low Power Monitoring (LPM), and optimised fast acceleration sensing.
The SP49 is suited for intelligent tyre functions such as on-tyre auto-position sensing, tyre inflation assistance, tyre blowout detection, and load detection.
The SP49 is a pin-to-pin replacement for Infineon's last generation SP40 TPMS products. With its hardware master/slave I²C interface and software simulated UART, SPI and PWM interfaces, the SP49 is suitable for sub-1GHz and scalable for BLE TPMS.
Available at ASIL-A, the sensor offers a high level of integration and is optimised 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 and is intended for battery-powered applications.
In addition to the ability to generate a wake-up from the integrated interval timer, the 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.
