LIS3MDL datasheet(21/33 Pages) STMICROELECTRONICS

No de pièce	LIS3MDL

Description	Digital output magnetic sensor: ultra-low-power, high-performance 3-axis magnetometer

PDF	33 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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DocID024204 Rev 4

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LIS3MDL

Digital interfaces

5.2.2

SPI write

Figure 9. SPI write protocol

The SPI Write command is performed with 16 clock pulses. A multiple byte write command

is performed by adding blocks of 8 clock pulses to the previous one.

bit 0: WRITE bit. The value is 0.

bit 1: MS bit. When 0, does not increment the address; when 1, increments the address in

multiple writes.

bit 2 -7: address AD(5:0). This is the address field of the indexed register.

bit 8-15: data DI(7:0) (write mode). This is the data that is written inside the device (MSb

first).

bit 16-... : data DI(...-8). Further data in multiple byte writes.

Figure 10. Multiple byte SPI write protocol (2-byte example)

SPC

SDI

D I7D I6 D I5D I4 DI3DI2

DI1DI0

AD5 AD 4 AD 3 AD2 AD 1 AD0

AM10132V1

SPC

SDI

AD5 AD4 AD3 AD2 AD1 AD 0

DI7 D I6 DI5 D I4 DI3 DI2 DI1 DI0 DI15 D I1 4DI13 D I1 2DI11 DI10 DI9 DI8

AM10133V1

LIS3MDL Fiches technique(PDF) 21 Page - STMicroelectronics