LIS331HHTR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

LIS331HHTR

MEMS digital output motion sensor ultra low-power high full-scale 3-axes “nano” accelerometer

STMicroelectronics 

LIS331HH

Digital interfaces

The SPI Read command is performed with 16 clock pulses. Multiple byte read command is

performed adding blocks of 8 clock pulses at the previous one.

bit 0: READ bit. The value is 1.

bit 1: MS bit. When 0 do not increment address, when 1 increment address in multiple

reading.

bit 2-7: address AD(5:0). 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).

bit 16-... : data DO(...-8). Further data in multiple byte reading.

Figure 8. Multiple bytes SPI read protocol (2 bytes example)

CS

SPC

SDI

SDO

RW

MS AD5 AD4 AD3 AD2 AD1 AD0

DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0 DO15DO14DO13DO12DO11DO10DO9 DO8

5.2.2

SPI write

Figure 9. SPI write protocol

CS

SPC

SDI

RW

DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0

MS AD5 AD4 AD3 AD2 AD1 AD0

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 will be written inside the device

(MSb first).

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

Doc ID 16366 Rev 1

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