topic Re: MMA8451Q Embedded Transient Detection & Motion Detection in Sensors https://community.nxp.com/t5/Sensors/MMA8451Q-Embedded-Transient-Detection-Motion-Detection/m-p/227882#M229 <HTML><HEAD></HEAD><BODY><P>Pavel,</P><P></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">The threshold resolution for both motion and transient detection functions is 0.0625g/LSB regardless of the selected dynamic range, there is no way to increase it.</SPAN></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;"> </SPAN></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">The motion detection function does not use the high-pass filter, e</SPAN><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">ither motion/ tilt or freefall can be detected using this embedded function. The transient detection function has the option of behaving in the same manner as the motion detection function when the HPF_BYP bit in the Transient_CFG register (0x1D) is set. Otherwise the high-pass filter is enabled and only dynamic motions above the configured threshold are detected.</SPAN></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;"> </SPAN></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">I hope it helps.</SPAN></P><P> </P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">Regards,</SPAN></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">Tomas</SPAN></P></BODY></HTML> Thu, 12 Sep 2013 12:01:44 GMT TomasVaverka 2013-09-12T12:01:44Z MMA8451Q Embedded Transient Detection & Motion Detection https://community.nxp.com/t5/Sensors/MMA8451Q-Embedded-Transient-Detection-Motion-Detection/m-p/227881#M228 <HTML><HEAD></HEAD><BODY><P>MMA8451Q Embedded Transient Detection &amp; Motion Detection</P><P>Hello, Friends!</P><P>In the AN4071 and AN4070 Example configuration 0.063g</P><P>Per count.&nbsp; How to increase of sensitivity for embedded functions? </P><P>Another question: How to eliminate static (gravity) acceleration for embedded Motion Detection?</P><P>Thanks!</P></BODY></HTML> Tue, 03 Feb 2026 21:25:40 GMT https://community.nxp.com/t5/Sensors/MMA8451Q-Embedded-Transient-Detection-Motion-Detection/m-p/227881#M228 pavelblisnets 2026-02-03T21:25:40Z Re: MMA8451Q Embedded Transient Detection & Motion Detection https://community.nxp.com/t5/Sensors/MMA8451Q-Embedded-Transient-Detection-Motion-Detection/m-p/227882#M229 <HTML><HEAD></HEAD><BODY><P>Pavel,</P><P></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">The threshold resolution for both motion and transient detection functions is 0.0625g/LSB regardless of the selected dynamic range, there is no way to increase it.</SPAN></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;"> </SPAN></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">The motion detection function does not use the high-pass filter, e</SPAN><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">ither motion/ tilt or freefall can be detected using this embedded function. The transient detection function has the option of behaving in the same manner as the motion detection function when the HPF_BYP bit in the Transient_CFG register (0x1D) is set. Otherwise the high-pass filter is enabled and only dynamic motions above the configured threshold are detected.</SPAN></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;"> </SPAN></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">I hope it helps.</SPAN></P><P> </P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">Regards,</SPAN></P><P><SPAN style="font-family: 'Arial','sans-serif'; font-size: 10pt;">Tomas</SPAN></P></BODY></HTML> Thu, 12 Sep 2013 12:01:44 GMT https://community.nxp.com/t5/Sensors/MMA8451Q-Embedded-Transient-Detection-Motion-Detection/m-p/227882#M229 TomasVaverka 2013-09-12T12:01:44Z