LSM320HAY30 STMicroelectronics, LSM320HAY30 Datasheet - Page 25

• Manufacturer Part Number: LSM320HAY30
• Description: Mems Motion Sensor Module 3d Digital Accelerometer And 2d Pitch And Yaw Analog Gyroscope
• Manufacturer: STMicroelectronics

LSM320HAY30
6.2.3
Figure 9.
SPI read in 3-wires mode
3-wires mode is entered by setting to ‘1’ bit SIM (SPI serial interface mode selection) in
LA_CTRL_REG4.
Figure 10. SPI read protocol in 3-wires mode
The SPI Read command is performed with 16 clock pulses:
bit 0: READ bit. The value is 1.
bit 1: MS bit. When 0, do not increment the address. When 1, increment the 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 is read from the device (MSb first).
Multiple read command is also available in 3-wires mode.
SPC
SDI
CS
SDI/O
SPC
CS
RW
Multiple byte SPI write protocol (2 byte example)
MS
AD5 AD4 AD3 AD2 AD1 AD0
RW
MS
AD5 AD4 AD3 AD2 AD1 AD0
Doc ID 16917 Rev 1
DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0 DI15 DI14 DI13 DI12 DI11 DI10 DI9 DI8
DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0
Digital interfaces
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