LSM303AGR Datasheet, PDF (46/68 Pages) STMicroelectronics – ultra-low-power 3D accelerometer and 3D magnetometer

Register description
8.6
CTRL_REG1_A (20h)
ODR3
ODR2
Table 32. CTRL_REG1 register
ODR1
ODR0
LPen
Zen
LSM303AGR
Yen
Xen
8.7
ODR[3:0]
LPen
Zen
Yen
Xen
Table 33. CTRL_REG1 description
Data rate selection. Default value: 0000
(0000: power-down mode; others: refer to Table 34)
Low-power mode enable. Default value: 0
(0: normal mode, 1: low-power mode)
(Refer to Section 4.2.1: Accelerometer power modes)
Z-axis enable. Default value: 1
(0: Z-axis disabled; 1: Z-axis enabled)
Y-axis enable. Default value: 1
(0: Y-axis disabled; 1: Y-axis enabled)
X-axis enable. Default value: 1
(0: X-axis disabled; 1: X-axis enabled)
ODR[3:0] is used to set the power mode and ODR selection. The following table indicates
the frequency of each combination of ODR[3:0].
ODR3
0
0
0
0
0
0
0
0
1
1
ODR2
0
0
0
0
1
1
1
1
0
0
Table 34. Data rate configuration
ODR1
ODR0
Power mode selection
0
0
Power-down mode
0
1
HR / Normal / Low-power mode (1 Hz)
1
0
HR / Normal / Low-power mode (10 Hz)
1
1
HR / Normal / Low-power mode (25 Hz)
0
0
HR / Normal / Low-power mode (50 Hz)
0
1
HR / Normal / Low-power mode (100 Hz)
1
0
HR / Normal / Low-power mode (200 Hz)
1
1
HR/ Normal / Low-power mode (400 Hz)
0
0
Low-power mode (1.620 kHz)
0
1
HR/ Normal (1.344 kHz);
Low-power mode (5.376 kHz)
CTRL_REG2_A (21h)
HPM1
HPM0
Table 35. CTRL_REG2 register
HPCF2 HPCF1
FDS HPCLICK
HPIS2
HPIS1
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