Data sheet
BMP280
Digital Pressure Sensor
Bosch Sensortec
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Document revision
Document release date
Document number
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0.4
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BMP280: Data sheet
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May 23 , 2013
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Notes
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Data in this document are preliminary and subject to change without
notice. Product photos and pictures are for illustration purposes only and
may differ from the real product’s appearance.
This document is confidential and under NDA.
Advance information - Subject to change without notice
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Technical reference code(s)
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0 273 300 354
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BST-BMP280-DS001-03
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Preliminary Datasheet
BMP280 Digital Pressure Sensor
D
IGITAL
P
RESSURE
S
ENSOR
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Key parameters
Pressure range
Package
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Current consumption
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Typical applications
Enhancement of GPS navigation
(e.g. time-to-first-fix improvement, dead-reckoning, slope detection)
Indoor navigation (floor detection, elevator detection)
Outdoor navigation, leisure and sports applications
Weather forecast
Health care applications (e.g. spirometry)
Vertical velocity indication (e.g. rise/sink speed)
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Target devices
Handsets such as mobile phones, tablet PCs, GPS devices
Navigation systems
Portable health care devices
Home weather stations
Flying toys
Watches
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BST-BMP280-DS001-03 | Revision 0.4 | May 2013
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MSL 1
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RoHS compliant, halogen-free
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Temperature range
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Digital interfaces
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Temperature coefficient offset 1.5 Pa/K, equiv. to 12.6 cm/K
(25 ... 40°C @900hPa)
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Absolute accuracy
(950 ...1050 hPa, 0 ...+40 °C)
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Relative accuracy
(950 … 1050hPa @25°C)
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8-pin LGA metal-lid
Footprint : 2.0 × 2.5 mm², height: 0.95 mm
±0.12 hPa, equiv. to ±1 m
typ. ±1 hPa after soldering
I²C (up to 3.4 MHz)
SPI (3 and 4 wire, up to 10 MHz)
2.7µA @ 1 Hz sampling rate
-40 … +85 °C
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300 … 1100 hPa
(equiv. to +9000…-500 m above/below sea level)
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© 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.
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Page 2
Confidential
BMP280
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Bosch Sensortec
Preliminary Datasheet
BMP280 Digital Pressure Sensor
General Description
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Robert Bosch is the world market leader for pressure sensors in automotive and consumer
applications. Bosch’s proprietary APSM (Advanced Porous Silicon Membrane) MEMS
manufacturing process is fully CMOS compatible and allows a hermetic sealing of the cavity in
an all silicon process. The BMP280 is based on Bosch’s proven Piezo-resistive pressure sensor
technology featuring high EMC robustness, high accuracy and linearity and long term stability.
The BMP280 is an absolute barometric pressure sensor especially designed for mobile
applications. The sensor module is housed in an extremely compact 8-pin metal-lid LGA
package with a footprint of only 2.0 × 2.5 mm
2
and 0.95 mm package height. Its small
dimensions and its low power consumption of 2.7 µA @1Hz allow the implementation in battery
driven devices such as mobile phones, GPS modules or watches.
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Parameter
Footprint
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Table 1: Comparison between BMP180 and BMP280
BMP180
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The emerging applications of in-door navigation, health care as well as GPS refinement require
a high relative accuracy and a low TCO at the same time. BMP180 and BMP280 are perfectly
suitable for applications like floor detection since both sensors feature excellent relative
accuracy is ±0.12 hPa, which is equivalent to ±1 m difference in altitude. The very low offset
temperature coefficient (TCO) of 1.5 Pa/K translates to a temperature drift of only 12.6 cm/K.
Please contact your regional Bosch Sensortec partner for more information about software
packages enhancing the calculation of the altitude given by the BMP280 pressure reading.
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As the successor to the widely adopted BMP180, the BMP280 delivers high performance in all
applications that require precise pressure measurement. The BMP280 operates at lower noise,
supports new filter modes and an SPI interface within a footprint 63% smaller than the BMP180.
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RMS Noise
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Current consumption @3 Pa RMS noise
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Minimum V
DDIO
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Temperature resolution
Interfaces
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Pressure resolution
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BST-BMP280-DS001-03 | Revision 0.4 | May 2013
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absolute accuracy after soldering
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Filter options
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Measurement rate
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Measurement modes
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© 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.
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Page 3
Confidential
BMP280
3.6 × 3.8 mm
1.80 V
2.0 × 2.5 mm
1.71 V
1.62 V
12 µA
3 Pa
1 Pa
1.20 V
2.7 µA
1.3 Pa
0.18 Pa
0.01°C
0.1°C
I²C
I²C & SPI (3 and 4 wire,
mode ‘00’ and ‘11’)
P&T, forced or periodic
up to 157 Hz
Only P or T, forced
up to 120 Hz
None
Five bandwidths
-3… +3 hPa
significantly better
Bosch Sensortec
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Preliminary Datasheet
BMP280 Digital Pressure Sensor
Index of Contents
2. ABSOLUTE MAXIMUM RATINGS ............................................................................................ 9
3. FUNCTIONAL DESCRIPTION ................................................................................................. 10
3.1 B
LOCK DIAGRAM
............................................................................................................... 11
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3.2 P
OWER MANAGEMENT
....................................................................................................... 11
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3.3 M
EASUREMENT FLOW
....................................................................................................... 11
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3.6 P
OWER MODES
................................................................................................................. 15
3.6.1 S
LEEP MODE
................................................................................................................................ 16
3.6.2 F
ORCED MODE
............................................................................................................................. 16
3.6.3 N
ORMAL MODE
............................................................................................................................. 16
3.6.4 M
ODE TRANSITION DIAGRAM
......................................................................................................... 17
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3.5 N
OISE
.............................................................................................................................. 15
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3.4 F
ILTER SELECTION
............................................................................................................ 14
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3.7 C
URRENT CONSUMPTION
................................................................................................... 18
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3.8 M
EASUREMENT TIMINGS
.................................................................................................... 18
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3.11 O
UTPUT COMPENSATION
................................................................................................. 20
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4. GLOBAL MEMORY MAP AND REGISTER DESCRIPTION .................................................. 24
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4.1 G
ENERAL REMARKS
.......................................................................................................... 24
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3.12 C
ALCULATING PRESSURE AND TEMPERATURE
................................................................... 22
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BST-BMP280-DS001-03 | Revision 0.4 | May 2013
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4.3.1 R
EGISTER
0
X
D0
“
ID
”
.................................................................................................................... 24
4.3.2 R
EGISTER
0
X
E0
“
RESET
”
.............................................................................................................. 24
4.3.3 R
EGISTER
0
X
F3
“
STATUS
”
............................................................................................................ 25
4.3.4 R
EGISTER
0
X
F4
“
CTRL
_
MEAS
”
...................................................................................................... 25
4.3.5 R
EGISTER
0
X
F5
“
CONFIG
”
............................................................................................................ 26
4.3.6 R
EGISTER
0
X
F7…0
X
F9
“
PRESS
” (_
MSB
, _
LSB
, _
XLSB
)
.................................................................. 26
4.3.7 R
EGISTER
0
X
FA…0
X
FC
“
TEMP
” (_
MSB
, _
LSB
, _
XLSB
)...................................................................
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4.3 R
EGISTER DESCRIPTION
.................................................................................................... 24
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4.2 M
EMORY MAP
................................................................................................................... 24
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3.11.1 C
OMPUTATIONAL REQUIREMENTS
............................................................................................... 20
3.11.2 T
RIMMING PARAMETER READOUT
................................................................................................ 21
3.11.3 C
OMPENSATION FORMULA
.......................................................................................................... 21
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3.10 D
ATA REGISTER SHADOWING
........................................................................................... 20
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3.9 D
ATA READOUT
................................................................................................................ 19
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3.8.1 M
EASUREMENT TIME
.................................................................................................................... 18
3.8.2 M
EASUREMENT RATE IN NORMAL MODE
......................................................................................... 19
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3.3.1 P
RESSURE MEASUREMENT
........................................................................................................... 12
3.3.2 T
EMPERATURE MEASUREMENT
..................................................................................................... 13
3.3.3 IIR
FILTER
.................................................................................................................................... 13
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1. SPECIFICATION ........................................................................................................................ 7
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© 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.
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Page 4
Confidential
Bosch Sensortec
Preliminary Datasheet
BMP280 Digital Pressure Sensor
5. DIGITAL INTERFACES ............................................................................................................ 28
5.1 I
NTERFACE SELECTION
...................................................................................................... 28
5.2.1 I²C
WRITE
.................................................................................................................................... 29
5.2.2 I²C
READ
..................................................................................................................................... 29
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5.4 I
NTERFACE PARAMETER SPECIFICATION
............................................................................. 31
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6.2 C
ONNECTION DIAGRAM
4-
WIRE
SPI ................................................................................... 35
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6.1 P
IN
-
OUT
........................................................................................................................... 34
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6. PIN-OUT AND CONNECTION DIAGRAM............................................................................... 34
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7.4 S
OLDERING GUIDELINES
.................................................................................................... 41
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7.5 T
APE AND REEL SPECIFICATION
......................................................................................... 42
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7.3.1 M
ASS PRODUCTION DEVICES
........................................................................................................ 40
7.3.2 E
NGINEERING SAMPLES
................................................................................................................ 40
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BST-BMP280-DS001-03 | Revision 0.4 | May 2013
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9.1 E
NGINEERING SAMPLES
.................................................................................................... 46
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9. LEGAL DISCLAIMER............................................................................................................... 46
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8.2 C
OMPENSATION FORMULA IN
32
BIT FIXED POINT
................................................................ 44
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8.1 C
OMPENSATION FORMULA IN FLOATING POINT
.................................................................... 43
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8. APPENDIX 1: COMPUTATION FORMULAE FOR 32 BIT SYSTEMS .................................. 43
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7.7.1 R
O
HS ......................................................................................................................................... 43
7.7.2 H
ALOGEN CONTENT
..................................................................................................................... 43
7.7.3 I
NTERNAL PACKAGE STRUCTURE
................................................................................................... 43
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7.7 E
NVIRONMENTAL SAFETY
.................................................................................................. 43
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7.6 M
OUNTING AND ASSEMBLY RECOMMENDATIONS
................................................................. 43
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7.5.1 D
IMENSIONS
................................................................................................................................ 42
7.5.2 O
RIENTATION WITHIN THE REEL
..................................................................................................... 42
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7.3 M
ARKING
.......................................................................................................................... 40
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7.2 L
ANDING PATTERN RECOMMENDATION
............................................................................... 39
D
7.1 O
UTLINE DIMENSIONS
....................................................................................................... 38
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7. PACKAGE, REEL AND ENVIRONMENT................................................................................ 38
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6.4 C
ONNECTION DIAGRAM
I
2
C ................................................................................................ 37
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6.3 C
ONNECTION DIAGRAM
3-
WIRE
SPI ................................................................................... 36
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5.4.1 G
ENERAL INTERFACE PARAMETERS
............................................................................................... 31
5.4.2 I²C
TIMINGS
................................................................................................................................. 31
5.4.3 SPI
TIMINGS
................................................................................................................................ 32
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5.3.1 SPI
WRITE
................................................................................................................................... 30
5.3.2 SPI
READ
.................................................................................................................................... 30
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5.3 SPI
INTERFACE
................................................................................................................. 29
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5.2 I²C I
NTERFACE
.................................................................................................................. 28
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© 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.
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Page 5
Confidential
Bosch Sensortec
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