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LIS331DL Datasheet(PDF) 26 Page - STMicroelectronics |
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LIS331DL Datasheet(HTML) 26 Page - STMicroelectronics |
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26 / 42 page  Register description LIS331DL 26/42 7 Register description The device contains a set of registers which are used to control its behavior and to retrieve acceleration data. The registers address, made of 7 bits, is used to identify them and to write the data through serial interface. 7.1 WHO_AM_I (0Fh) Device identification register. This register contains the device identifier that for LIS331DL is set to 3Bh. 7.2 CTRL_REG1 (20h) DR bit allows to select the data rate at which acceleration samples are produced. The default value is 0 which corresponds to a data-rate of 100 Hz. By changing the content of DR to “1” the selected data-rate will be set equal to 400 Hz. PD bit allows to turn the device out of power-down mode. The device is in power-down mode when PD= ‘0’ (default value after boot). The device is in normal mode when PD is set to ‘1’. STP, STM bits are used to activate the self test function. When the bit is set to one, an output change will occur to the device outputs (refer to Table 3 and 4 for specifications) thus allowing to check the functionality of the whole measurement chain. Table 16. WHO_AM_I register 0 011 10 11 Table 17. CTRL_REG1 register DR PD FS STP STM Zen Yen Xen Table 18. CTRL_REG1 description DR Data rate selection. Default value: 0 (0: 100 Hz output data rate; 1: 400 Hz output data rate) PD Power Down Control. Default value: 0 (0: power down mode; 1: active mode) FS Full Scale selection. Default value: 0 (refer to Table 3 for typical full scale values) STP, STM Self Test Enable. Default value: 0 (0: normal mode; 1: self test P, M enabled) Zen Z axis enable. Default value: 1 (0: Z axis disabled; 1: Z axis enabled) Yen Y axis enable. Default value: 1 (0: Y axis disabled; 1: Y axis enabled) Xen X axis enable. Default value: 1 (0: X axis disabled; 1: X axis enabled) |
Similar Part No. - LIS331DL_08 |
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Similar Description - LIS331DL_08 |
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