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LIS3DHH

Communication interface characteristics

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4.2.1

SPI read

Figure 5. SPI read protocol

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

is performed by adding blocks of 8 clock pulses to 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 will be read from the device (MSb

first).

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

Figure 6. Multiple byte SPI read protocol (2-byte example)