What is the risk if the data update timing of the accelerometer and the data acquisition timing of the microcontroller overlap

[ggob]

The microcontroller acquires data via SPI communication with the accelerometer. What is the risk if the data update timing of the accelerometer and the data acquisition timing of the microcontroller overlap?

[Federica Bossi]

Hi @ggob ,

If the accelerometer updates its output registers at the same time the microcontroller is reading them over SPI, the main risk is that you get an inconsistent sample, not physical damage.

To mitigate this effect you could:

1. Enable BDU in the accelerometer configuration.
2. Use the data‑ready interrupt/flag to trigger the SPI read.
3. Always read all the data registers belonging to one sample in a single burst transfer.