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LPS27HHTW Arkusz danych(PDF) 26 Page - STMicroelectronics

Numer części LPS27HHTW
Szczegółowy opis  MEMS pressure sensor: 260-1260 hPa absolute digital output barometer with embedded temperature sensor in water-resistant package
PDF  55 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
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LPS27HHTW Arkusz danych(HTML) 26 Page - STMicroelectronics

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7.3.3
SPI read in 3-wire mode
A 3-wire mode is entered by setting bit SIM to ‘1’ (SPI serial interface mode selection) in CTRL_REG1 (10h).
Figure 22. 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
MS
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.
LPS27HHTW
SPI bus interface (CS = low)
DS13489 - Rev 1
page 26/55



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