Rutronik Bosch SMP290

It is the SMP290, made by Bosch.

“Measurement data or updates can be encrypted [AES-128] for transmission with the customer-specific application software,” said the component distributor. “As Bluetooth Low Energy is already used in infotainment or radio keys, the sensor module fits perfectly into the vehicle’s radio landscape.”

Cyber Security is to ISO21434, with software development to ASPICE Level 2.

The processor is a 32bit ARC EM6 with FPU, DMA and cache, and is paired with 256kbyt eif flash and 64kbyte of ram.

Also in the device are a dc-dc converter, a bandgap reference, a low-drop-out regulator and an RC oscillator.

Depending on variant, radio output is 0, 4 or 6dBm, pressure can vary from 90kPa to either 920kPa or 1.5MPa, acceleration spans ±330g in the x-axis and ±960g in z, and the temperature sensor works across -40 to +125°C. Including lifetime drift, pressure is reported to 5kPa or batter.

The package has wettable flanks for automatic optical inspection.

Find the SMP290 on this Rutronik web page

*While Rutronik said that the radio is Bluetooth LE 5.4, according to Bosch it is LE 5.3. Electronics Weekly has requested clarification.

In April, Bosch signed with Arrow to distribute components including its tyre sensors.