Data Sheet

Final Datasheet
BME280 Environmental sensor
Page 32
BST-BME280-DS001-10 | Revision 1.1 | May 2015 Bosch Sensortec
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Note: Specifications within this document are subject to change without notice.
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 10: I²C multiple byte read
6.3 SPI interface

. The automatic selection between  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 3w_en. The pad SDI is used as a data pad
in 3-wire mode.