Datasheet

DocID17530 Rev 2 37/54

LIS3DH Registers description

8.11 CTRL_REG4 (23h)

Table 37. CTRL_REG4 register

BDU BLE

(1)

1. The BLE function can be activated only in high-resolution mode.

FS1 FS0 HR ST1 ST0 SIM

Table 38. CTRL_REG4 description

BDU Block data update. Default value: 0

(0: continuous update;

1: output registers not updated until MSB and LSB reading)

BLE Big/little endian data selection. Default value 0.

(0: Data LSB @ lower address; 1: Data MSB @ lower address)

FS[1:0] Full-scale selection. default value: 00

(00: ±2 g; 01: ±4 g; 10: ±8 g; 11: ±16 g)

HR High-resolution output mode: Default value: 0

(0: high-resolution disabled; 1: high-resolution enabled)

ST[1:0] Self-test enable. Default value: 00

(00: self-test disabled; other: See Table 39)

SIM SPI serial interface mode selection. Default value: 0

(0: 4-wire interface; 1: 3-wire interface)

Table 39. Self-test mode configuration

ST1 ST0 Self test mode

0 0 Normal mode

0 1 Self-test 0

1 0 Self-test 1

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