Advanced tire pressure monitoring system integrating MEMS sensors and ASICs
Functional safety ASIL-A compliant, all functions performed by the latest TPMS module

Infineon Technologies (hereafter Infineon) has launched a sensor that performs various functions, such as tire puncture detection and load detection.

Infineon announced today the launch of the XENSIV™ SP49 tire pressure monitoring sensor, which combines its automotive expertise with patented glass-silicon-glass MEMS sensors.

This sensor integrates a MEMS sensor and an ASIC and provides smart tire functionality that enables advanced tire pressure monitoring systems (TPMS).

It also features a powerful 32-bit Arm® M0+ core, large flash memory and RAM, low-power monitoring (LPM), and optimized high-speed acceleration sensing.

SP49 is well suited for smart tire functions such as automatic tire position detection, tire inflation assistance, tire puncture detection, and load detection.

The SP49 is designed as a pin-to-pin replacement for Infineon's previous generation SP40 TPMS product.

Providing hardware master/slave I2C interface and software simulation UART, SPI, PWM interface, SP49 is ideal for sub-1GHz and can be used for BLE TPMS.all.

The SP49 is a highly integrated and optimized device that meets functional safety ASIL-A and can perform all functions required to implement the latest TPMS modules.

Featuring an integrated microcontroller, sensors and convenient peripherals, the SP49 requires only a few passive components to form a complete TPMS sensor module, and the SP49 is designed for low power and is optimized for battery operation.

The SP49 product can generate wake-ups from a built-in interval timer, and is also suitable for standalone remote pressure sensing solutions that require low power consumption.

These applications enable on-demand measurements via a wake-up function and best-in-class sensitivity LF receiver.