Sensors中的主题 Re: MMA8451Q interrupt read mode

MMA8451Q interrupt read mode

maurogatti — Tue, 03 Feb 2026 22:36:26 GMT

Hello.

I configured the MMA8451Q with ODR = 800Hz, so I can read the acceleration's components with a 1,25 ms sample period.

The polling mode is ok, I can do a read with 800Hz sample frequency.

But I can do it in "interrupt mode" (I configured MMA8551 as described in AN4076) because I see the interrupt pulse every 24 ms (about 40 Hz).

Why?

Thanks

david_diaz — Fri, 25 Nov 2016 16:55:37 GMT

Hello Mauro,

Thank you very much for writing.

In this case, I highly recommend to use the sample project from the link below as a reference for your application:

Please note that in the project, the interrupt mode is used.

Please let me know if you have any further question and I will be glad to help you.

Best Regards,

David