LSM330DLC Datasheet, PDF (37/66 Pages) STMicroelectronics – iNEMO inertial module: 3D accelerometer and 3D gyroscope

LSM330DLC
6.2.2
SPI write
Figure 17. SPI write protocol
Digital interfaces
CS
SPC
SDI
RW
D I7 D I6 D I5 D I4 DI3 DI2 DI1 DI0
MS AD5 AD 4 AD 3 AD2 AD 1 AD0
AM10132V1
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, do not increment address; when 1, increment address in multiple
writing.
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 will be written to the device (MSb
first).
bit 16-... : data DI(...-8). Further data in multiple-byte writing.
Figure 18. Multiple bytes SPI write protocol (2 bytes example)
6.2.3
CS
SPC
SDI
RW
DI7 D I6 DI5 D I4 DI3 DI2 DI1 DI0 DI15 D I1 4DI13 D I1 2DI11 DI10 DI9 DI8
MS _{AD5 AD4 AD3 AD2 AD1 AD 0}
AM10133V1
SPI read in 3-wire mode
3-wire mode is entered by setting the SIM bit to ‘1’ (SPI serial interface mode selection) in
the CTRL_REG4_G register.
Doc ID 022162 Rev 2
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