what are the function of DEN_A/G and DRDY_M pins of LSM9DS1?

Hi, the datasheet does not provide enought info about when to use or the benefits of use this pins, does anybody has used it?

thanks

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ST Employee

Hi @jg_spitfire ,

the DEN_A/G pin can be used as data ready output for the accelerometer/gyro part of the module: its purpose is to synchronize the measurement with external signal, and if you don't need this functionality you can keep i unconnected. To enable this functionality you have to configure it in the proper registers, but you can use as well the INT1 and INT2 pins.
the DRDY_M is the magnetometer subchip data ready output (that goes up when the magnetometer data is available, if properly configured), and has the same functionality as the DEN_A/G of the accelerometer/gyro but for the magnetic sensor.

These pins can appear quite not useful, but are used for debug and test mode purposes.

Regards

ST Employee

Hi @jg_spitfire ,

the DEN_A/G pin can be used as data ready output for the accelerometer/gyro part of the module: its purpose is to synchronize the measurement with external signal, and if you don't need this functionality you can keep i unconnected. To enable this functionality you have to configure it in the proper registers, but you can use as well the INT1 and INT2 pins.
the DRDY_M is the magnetometer subchip data ready output (that goes up when the magnetometer data is available, if properly configured), and has the same functionality as the DEN_A/G of the accelerometer/gyro but for the magnetic sensor.

These pins can appear quite not useful, but are used for debug and test mode purposes.

Regards

Senior

thanks!

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