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ISM330BX датащи(PDF) 28 Page - STMicroelectronics

номер детали ISM330BX
подробное описание детали  6-axis IMU (inertial measurement unit) with wide bandwidth, low-noise accelerometer, embedded AI and sensor fusion for industrial applications
PDF  150 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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ISM330BX датащи(HTML) 28 Page - STMicroelectronics

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5.1.3.2
SPI write
Figure 14. SPI write protocol (in mode 3)
CS
SPC
SDI
RW
DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0
AD5 AD4 AD3 AD2 AD1 AD0
AD6
The SPI write command is performed with 16 clock pulses. A multiple byte write command is performed by adding
blocks of 8 clock pulses to the previous one.
bit 0: WRITE bit. The value is 0.
bit 1-7: address AD(6:0). This is the address field of the indexed register.
bit 8-15: data DI(7:0) (write mode). This is the data that is written inside the device (MSb first).
bit 16-... : data DI(...-8). Further data in multiple byte writes.
Figure 15. Multiple byte SPI write protocol (2-byte example) (in mode 3)
CS
SPC
SDI
RW
AD5 AD4 AD3 AD2 AD1 AD0
DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0 DI15 DI14 DI13 DI12 DI11 DI10 DI9 DI8
AD6
5.1.3.3
SPI read in 3-wire mode
3-wire mode is entered by setting the IF_CFG (03h) (SIM) bit equal to 1 (SPI serial interface mode selection).
Figure 16. SPI read protocol in 3-wire mode (in mode 3)
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.
ISM330BX
Digital interfaces
DS14588 - Rev 2
page 28/150



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