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BMP280 Datasheet(PDF) 30 Page - Bosch Sensortec GmbH

Part # BMP280
Description  Digital Pressure Sensor
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Manufacturer  BOSCH [Bosch Sensortec GmbH]
Direct Link  https://www.bosch-sensortec.com
Logo BOSCH - Bosch Sensortec GmbH

BMP280 Datasheet(HTML) 30 Page - Bosch Sensortec GmbH

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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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