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BMP280 数据表(PDF) 34 Page - Bosch Sensortec GmbH

部件名 BMP280
功能描述  Digital Pressure Sensor
PDF  49 Pages
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制造商  BOSCH [Bosch Sensortec GmbH]
网页  https://www.bosch-sensortec.com
标志 BOSCH - Bosch Sensortec GmbH

BMP280 数据表(HTML) 34 Page - Bosch Sensortec GmbH

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Bosch Sensortec | BMP280 Data sheet
34 |
49
Modifications reserved | Data subject to change without notice
Document number: BST-BMP280-DS001-26 Revision_1.26_102021
Table 28: SPI timings
Parameter
Symbol
Condition
Min
Typ
Max
Units
SPI clock input frequency F_spi
0
10
MHz
SCK low pulse
T_low_sck
20
ns
SCK high pulse
T_high_sck
20
ns
SDI setup time
T_setup_sdi
20
ns
SDI hold time
T_hold_sdi
20
ns
SDO output delay
T_delay_sdo 25pF load, VDDIO=1.6V min
30
ns
SDO output delay
T_delay_sdo 25pF load, VDDIO=1.2V min
40
ns
CSB setup time
T_setup_csb
20
ns
CSB hold time
T_hold_csb
20
ns
6. Pin-out and connection diagram
6.1
Pin-out
TOP VIEW
(pads not visible)
8
VDD
7
GND
6
VDDIO
5
SDO
1
GND
2
CSB
3
SDI
4
SCK
BOTTOM VIEW
(pads visible)
8
VDD
7
GND
6
VDDIO
5
SDO
1
GND
2
CSB
3
SDI
4
SCK
Vent hole
Pin 1
marker
Figure 14: Pin-out top and bottom view
Table 29: Pin description
Pin
Name
I/O Type
Description
Connect to
SPI 4W
SPI 3W
I²C
1
GND
Supply
Ground
GND
2
CSB
In
Chip select
CSB
CSB
VDDIO
3
SDI
In/Out
Serial data input
SDI
SDI/SDO
SDA
4
SCK
In
Serial clock input
SCK
SCK
SCL
5
SDO
In/Out
Serial data output
SDO
DNC
GND for
default
address
6
VDDIO
Supply
Digital interface supply
VDDIO
7
GND
Supply
Ground
GND
8
VDD
Supply
Analog supply
VDD



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