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LIS25BATR Datasheet(PDF) 20 Page - STMicroelectronics

Part # LIS25BATR
Description  MEMS digital output motion sensor: low-noise, high-bandwidth 3-axis accelerometer with TDM interface
PDF  32 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LIS25BATR Datasheet(HTML) 20 Page - STMicroelectronics

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TDM interface specifications
LIS25BA
20/32
DocID031510 Rev 4
4.6
TDM clocks and MCLK requirements
The relationship between TDM clocks and MCLK should be:
Both BCLK and WCLK must be obtained from MCLK by integer division. This
requirement is mandatory since ADC is clocked by MCLK, so the TDM data rate must
be perfectly synchronous in frequency and phase with the decimated ADC data rate.
The BCLK/WCLK ratio must be an integer value.
4.7
I²C axis disable
In TDM mode, a host processor can power down each axis of the LIS25BA accelerometer
independently, overriding the I²C registers (AXISX_EN, AXISY_EN, AXISZ_EN in
AXES_CTRL_REG (2Fh)) interface to reduce power consumption during operation.
When an axis is powered down, the corresponding TDM slot will be put in HiZ.



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