LSM303AGR Datasheet, PDF (63/68 Pages) STMicroelectronics – ultra-low-power 3D accelerometer and 3D magnetometer

LSM303AGR
Register description
8.43
INT_SOURCE_REG_M (64h)
When interrupt latched is selected, reading this register resets all the bits in this register.
Table 101. INT_SOURCE_REG_M register
P_TH_S_ P_TH_S_ P_TH_S_ N_TH_S_ N_TH_S_ N_TH_S_
X
Y
Z
X
Y
Z
MROI
INT
P_TH_S_X
P_TH_S_Y
P_TH_S_Z
N_TH_S_X
N_TH_S_Y
N_TH_S_Z
MROI
INT
Table 102. INT_SOURCE_REG_M register description
X-axis value exceeds the threshold positive side
Y-axis value exceeds the threshold positive side
Z-axis value exceeds the threshold positive side
X-axis value exceeds the threshold negative side
Y-axis value exceeds the threshold negative side
Z-axis value exceeds the threshold negative side
MROI flag generation is alway enabled.This flag is reset by reading
INT_SOURCE_REG_M (64h).
This bit signals when the interrupt event occurs.
8.44
INT_THS_L_REG_M (65h)
This register contains the least significant bits of the threshold value chosen for the interrupt.
Table 103. INT_THS_L_REG_M register
TH7
THS6
TH5
TH4
TH3
TH2
TH1
TH0
TH[7:0]
Table 104. INT_THS_L_REG_M register description
Threshold value for the interrupt.
8.45
INT_THS_H_REG_M (66h)
This register contains the most significant bits of the threshold value chosen for the
interrupt.
Table 105. INT_THS_H_REG_M register
TH7
THS6
TH5
TH4
TH3
TH2
TH1
TH0
TH[7:0]
Table 106. INT_THS_H_REG_M register description
Threshold value for the interrupt.
These registers set the threshold value for the output to generate the interrupt (INT bit in
INT_SOURCE_REG_M (64h)). This threshold is common to all three (axes) output values
and is unsigned unipolar. The threshold value is correlated to the current gain and it is
unsigned because the threshold is considered as an absolute value, but crossing the
threshold is detected for both positive and negative sides.
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