LPS35HW Datasheet, PDF (28/48 Pages) STMicroelectronics – Embedded temperature compensation

Digital interfaces
6.7
SPI read in 3-wire mode
LPS35HW
A 3-wire mode is entered by setting bit SIM to ‘1’ (SPI serial interface mode selection) in
CTRL_REG1.
Figure 19: SPI read protocol in 3-wire mode
CS
SPC
SDI/O
RW
DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0
MADS6 AD5 AD4 AD3 AD2 AD1 AD0
The SPI read command is performed with 16 clock pulses:
bit0: READ bit. The value is 1.
bit1-7: address AD(6:0). This is the address field of the indexed register.
bit8-15: data DO(7:0) (read mode). This is the data that is read from the device (MSb first).
A multiple read command is also available in 3-wire mode.
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