LSM303AGR datasheet(60/68 Pages) STMICROELECTRONICS

60 / 68 page

LSM303AGR

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DocID027765 Rev 5

8.35

OFFSET_X_REG_L_M (45h) and OFFSET_X_REG_H_M (46h)

These registers comprise a 16-bit register and represent X hard-iron offset in order to

compensate environmental effects (data in two’s complement). These values act on the

magnetic output data value in order to delete the environmental offset.

8.36

OFFSET_Y_REG_L_M (47h) and OFFSET_Y_REG_H_M (48h)

These registers comprise a 16-bit register and represent Y hard-iron offset in order to

compensate environmental effects (data in two’s complement). These values act on the

magnetic output data value in order to delete the environmental offset.

8.37

OFFSET_Z_REG_L_M (49h) and OFFSET_Z_REG_H_M (4Ah)

These registers comprise a 16-bit register and represent Z hard-iron offset in order to

compensate environmental effects (data in two’s complement). These values act on the

magnetic output data value in order to delete the environmental offset.

8.38

WHO_AM_I_M (4Fh)

The identification register is used to identify the device (read-only register).

8.39

CFG_REG_A_M (60h)

The configuration register is used to configure the output data rate and the measurement

configuration.

Table 90. CFG_REG_A_M register

Table 91. CFG_REG_A_M register description

01000000

SOFT_RST

ODR1

ODR0

MD1

MD0

SOFT_RST

When this bit is set, the configuration registers and user registers are reset. Flash

registers keep their values.

Low-power mode enable. Default: 0

0: high-resolution mode 1: low-power mode enabled

ODR[1:0]

Output data rate configuration (see Table 92: Output data rate configuration)

MD[1:0]

Mode select bit. These bits select the mode of operation of the device (see

Table 93: System mode)

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