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LSM303CTR 数据表(PDF) 28 Page - STMicroelectronics

部件名 LSM303CTR
功能描述  Ultra-compact high-performance eCompass module: 3D accelerometer and 3D magnetometer
PDF  53 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LSM303CTR 数据表(HTML) 28 Page - STMicroelectronics

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Digital interfaces
LSM303C
28/53
DocID024975 Rev 2
bit 8-15: data DO(7:0) (read mode). This is the data that is read from the device (MSb first).
The multiple read command is available in 3-wire mode.
6.2.3
Magnetometer SPI write
Figure 12. Magnetometer SPI write protocol
The SPI Write command is performed with 16 clock pulses. The 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: MS bit. When 0 does not increment the address; when 1, increments the address in
multiple writes.
bit 2 -7: address AD(5:0). 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 13. Multiple byte SPI write protocol (2-byte example)
CS
SPC
SDI
RW
D I7D I6 D I5D I4 DI3DI2
DI1DI0
AD5 AD 4 AD 3 AD2 AD 1 AD0
MS
AM10132V1
CS
SPC
SDI
RW
AD5 AD4 AD3 AD2 AD1 AD 0
DI7 D I6 DI5 D I4 DI3 DI2 DI1 DI0 DI15 D I1 4DI13 D I1 2DI11 DI10 DI9 DI8
MS
AM10133V1
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