LIS2DH datasheet(28/50 Pages) STMICROELECTRONICS

No. de pieza	LIS2DH

Descripción Electrónicos	ultra low-power high performance 3-axis ?쐄emto??accelerometer

PDF	50 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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Digital interfaces

LIS2DH

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Doc ID 022516 Rev 1

5.2.2

SPI write

Figure 9.

SPI write protocol

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

performed adding blocks of 8 clock pulses at 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 is written inside the device (MSb

first).

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

Figure 10.

Multiple bytes SPI write protocol (2 bytes example)

5.2.3

SPI read in 3-wires mode

3-wires mode is entered by setting to ‘1’ bit SIM (SPI serial interface mode selection) in

CTRL_REG4.

SPC

SDI

DI7

D I6 DI5

D I4 DI3

DI2

DI1 DI0

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 DI12DI11 DI10 DI9 DI8

AM10133V1

LIS2DH Datasheet(PDF) 28 Page - STMicroelectronics