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IIS2DH Arkusz danych(PDF) 29 Page - STMicroelectronics |
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IIS2DH Arkusz danych(HTML) 29 Page - STMicroelectronics |
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29 / 49 page ![]() DocID027668 Rev 2 29/49 IIS2DH Digital interfaces 49 5.2.3 SPI read in 3-wire mode 3-wire mode is entered by setting bit SIM (SPI serial interface mode selection) to ‘1’ in CTRL_REG4 (23h). Figure 11. SPI read protocol in 3-wire 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, does not increment the address, when 1, increments the address in multiple reads. 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). The multiple read command is also available in 3-wire mode. CS SPC SDI/O RW DO7 D O6 DO5 DO4 DO3 DO2 DO1 DO0 AD5 AD 4 AD 3 AD2 AD1 AD 0 MS AM10134V1 |
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