LIS3L02DQ データシートの表示（PDF） - STMicroelectronics

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LIS3L02DQ

INERTIAL SENSOR: 3Axis - 2g DIGITAL OUTPUT LINEAR ACCELEROMETER

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LIS3L02DQ

4.2.4 SPI Read in 3-wires mode

3-wires mode is entered by setting to 1 bit SIM (SPI Serial Interface Mode selection) in A_IF_CTRL2.

Figure 8. SPI Read protocol in 3-wires model

CS

SPC

SPDI/O

RW

DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0

AD6 AD5 AD4 AD3 AD2 AD1 AD0

The SPI Read command consists is performed with 16 clocks pulses:

– bit 0: READ bit. The value is 1.

– bit 1-7: address AD(6:0). This is the address field of the indexed register.

– bit 8-15: data DO(7:0) (read mode). This is the data that will be read from the device (MSb first).

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