LIS2HH12 - Meaning of RES pin

[s m]

Hello,

I have a board on my desk where the RES pin (#5) of LIS2HH12 is not connected.

The data sheet says, Connect to GND.

OK ... not good ...

As I do not get any response of the accelerometer via I2C, I would like to know if this pin is the reason. I can't easily connect it due to the package ...

Does RES stand for RESET or does anyone from ST can confirm that connecting RES not to ground results in having no I2C access?

Thanks.

[Miroslav BATEK]

I will check with the product specialist, but I doubt unconnected RES pin is the reason why your device doesn't work. I would keep looking for another reason.

The RES means RESERVED and is not needed for sensor operation, but should be polarized.

[Miroslav BATEK · Accepted solution]

I can confirm that LIS2HH12 can work even if the RES (5) pin is unconnected, bun in this case the noise of the accelerometer can increase.

[s m]

Thanks, I desoldered it and I figured out that it was not soldered correctly.