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AIS2IH Datasheet(PDF) 30 Page - STMicroelectronics

Part # AIS2IH
Description  MEMS digital output motion sensor: high-performance 3-axis accelerometer for automobile applications
PDF  63 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AIS2IH Datasheet(HTML) 30 Page - STMicroelectronics

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6.2.3
SPI read in 3-wire mode
3-wire mode is entered by setting the CTRL2 (21h)(SIM) bit equal to ‘1’ (SPI serial interface mode selection).
Figure 17. SPI read protocol in 3-wire mode
CS
SPC
SDI/O
RW
DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0
AD5 AD4 AD3 AD2 AD1 AD0
AD6
The SPI read command is performed with 16 clock pulses:
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).
A multiple read command is also available in 3-wire mode.
AIS2IH
SPI bus interface
DS12421 - Rev 4
page 30/63



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