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BMP280 Datasheet(PDF) 30 Page - Bosch Sensortec GmbH |
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BMP280 Datasheet(HTML) 30 Page - Bosch Sensortec GmbH |
30 / 49 page ![]() Datasheet BMP280 Digital Pressure Sensor Page 30 BST-BMP280-DS001-19 | Revision 1.19 | January 2018 Bosch Sensortec © Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany. Note: Specifications within this document are subject to change without notice. Not intended for publication. Start RW ACKS ACKS 1 1 1 0 1 1 X 0 1 1 1 1 0 1 1 0 Start RW ACKS ACKM NOACKM Stop 1 1 1 0 1 1 X 1 bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 Control byte Data byte Data byte Register address (F6h) S Slave Address P S Slave Address Register data - address F7h Register data - address F6h Figure 8: I²C multiple byte read 5.3 SPI interface The SPI interface is compatible with SPI mode ‘00’ (CPOL = CPHA = ‘0’) and mode ‘11’ (CPOL = CPHA = ‘1’). The automatic selection between mode ‘00’ and ‘11’ is determined by the value of SCK after the CSB falling edge. The SPI interface has two modes: 4-wire and 3-wire. The protocol is the same for both. The 3- wire mode is selected by setting ‘1’ to the register spi3w_en. The pad SDI is used as a data pad in 3-wire mode. |
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