LIS3DSH 查看數據表（PDF） - STMicroelectronics

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LIS3DSH

MEMS digital output motion sensor ultra low-power high performance three-axis “nano” accelerometer

STMicroelectronics 

Digital interfaces

LIS3DSH

6.2.1

SPI read

Figure 7. SPI read protocol

CS

SPC

SDI

RW

MS AD5 AD4 AD3 AD2 AD1 AD0

SDO

DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0

AM10130V1

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 1-7: 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 is 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-byte example)

CS

SP C

SDI

SD O

RW

M S A D5 A D4 AD 3 A D2 A D1 A D0

DO 7 DO 6 DO 5 DO 4 DO 3 DO 2 DO 1 DO 0 DO 15 DO 14 DO 13 DO 12 DO 11 DO 10 D O9 D O8

AM10131V1

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Doc ID 022405 Rev 1

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