Data sheet
BMP183
Digital pressure sensor
Bosch Sensortec
BMP183 Data sheet
Document revision
1.0
Document release date
June 13 , 2012
Document number
BST-BMP183-DS000-00
Technical reference code(s)
0 273 300 357
Notes
Data in this document are subject to change without notice. Product
photos and pictures are for illustration purposes only and may differ from
the real product‟s appearance.
th
Data sheet
BMP183
Page 2
BMP183
DIGITAL PRESSURE SENSOR
Key features
Pressure range:
Supply voltage:
300 ... 1100hPa (+9000m ... -500m relating to sea level)
1.8 ... 3.6V (VDD)
1.62V ... 3.6V (VDDIO)
Package:
LGA package with metal lid
Small footprint:
3.6mm x 3.8mm
Super-flat:
0.93mm height
Low power:
5µA at 1 sample / sec. in standard mode
Low noise:
0.06hPa (0.5m) in ultra low power mode
0.02hPa (0.17m) ultra high resolution mode
- Temperature measurement included
- SPI interface
- Fully calibrated
- Pb-free, halogen-free and RoHS compliant,
- MSL 1
Typical applications
Enhancement of GPS navigation (dead-reckoning, slope detection, etc.)
In- and out-door navigation
Leisure and sports
Weather forecast
Vertical velocity indication (rise/sink speed)
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 3
BMP183 general description
The BMP183 is the function compatible successor of the BMP085, a new generation of high
precision digital pressure sensors for consumer applications.
The ultra-low power, low voltage electronics of the BMP183 is optimized for use in mobile phones,
PDAs, GPS navigation devices and outdoor equipment. With a low altitude noise of merely 0.25m at
fast conversion time, the BMP183 offers superior performance. The SPI interface allows for easy
system integration with a microcontroller.
The BMP183 is based on piezo-resistive technology for EMC robustness, high accuracy and linearity as
well as long term stability.
Robert Bosch is the world market leader for pressure sensors in automotive applications. Based on
the experience of over 400 million pressure sensors in the field, the BMP183 continues a new
generation of micro-machined pressure sensors.
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 4
Index of Contents
1. ELECTRICAL CHARACTERISTICS ................................................................................................. 6
2. ABSOLUTE MAXIMUM RATINGS.................................................................................................... 8
3. OPERATION ...................................................................................................................................... 9
3.1 POWER SUPPLY AND POWER ON SEQUENCE ................................................................................. 9
3.2 GENERAL DESCRIPTION .............................................................................................................. 9
3.3 GENERAL FUNCTION AND APPLICATION SCHEMATICS ..................................................................... 9
3.4 MEASUREMENT OF PRESSURE AND TEMPERATURE ..................................................................... 11
3.4.1 Hardware pressure sampling accuracy modes ................................................................ 12
3.4.2 Software pressure sampling accuracy modes .................................................................. 13
3.5 CALIBRATION COEFFICIENTS...................................................................................................... 13
3.6 CALCULATING PRESSURE AND TEMPERATURE ............................................................................ 14
3.7 CALCULATING ABSOLUTE ALTITUDE............................................................................................ 16
3.8 CALCULATING PRESSURE AT SEA LEVEL ..................................................................................... 17
4. GLOBAL MEMORY MAP ................................................................................................................ 18
5. SPI INTERFACE .............................................................................................................................. 19
5.1 SPI SPECIFICATION ................................................................................................................... 19
5.2 SPI PROTOCOL......................................................................................................................... 20
5.3 START TEMPERATURE AND PRESSURE MEASUREMENT ................................................................ 21
5.4 READ A/D CONVERSION RESULT OR NMV DATA ......................................................................... 22
6. PACKAGE ........................................................................................................................................ 23
6.1 PIN CONFIGURATION ................................................................................................................. 23
6.2 OUTLINE DIMENSIONS ............................................................................................................... 24
6.2.1 Bottom view ..................................................................................................................... 24
6.2.2 Top view .......................................................................................................................... 25
6.2.3 Side view ......................................................................................................................... 25
6.3 MOISTURE SENSITIVITY LEVEL AND SOLDERING........................................................................... 26
6.4 ROHS COMPLIANCY .................................................................................................................. 26
6.5 MOUNTING AND ASSEMBLY RECOMMENDATIONS ......................................................................... 26
7. LEGAL DISCLAIMER ...................................................................................................................... 27
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 5
7.1 ENGINEERING SAMPLES ............................................................................................................ 27
7.2 PRODUCT USE .......................................................................................................................... 27
7.3 APPLICATION EXAMPLES AND HINTS ........................................................................................... 27
8. DOCUMENT HISTORY AND MODIFICATION ............................................................................... 28
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 6
1. Electrical characteristics
If not stated otherwise, the given values are ±3-Sigma values over temperature/voltage range in the
given operation mode. All values represent the new parts specification; additional solder drift is
shown separately.
Table 1: Operating conditions, output signal and mechanical characteristics
Parameter
Operating temperature
Supply voltage
TA
VDD
Condition
Min
operational
-40
+85
full accuracy
0
+65
ripple max. 50mVpp
1.8
2.5
3.6
V
1.62
2.5
3.6
V
VDDIO
Typ
Max
Units
°C
IDDLOW
ultra low power mode
3
µA
IDDSTD
standard mode
5
µA
IDDHR
high resolution mode
7
µA
IDDUHR
Ultra high res. mode
12
µA
IDDAR
Advanced res. mode
32
µA
Peak current
Ipeak
during conversion
650
Standby current
IDDSBM
@ 25°C
0.1
µA
950 . . . 1050 hPa
@ 25 °C
±0.12
hPa
±1.0
m
700 … 900hPa
25 . . . 40 °C
±0.12
hPa
±1.0
m
Supply current
@ 1 sample / sec.
25°C
Relative accuracy
pressure
VDD = 3.3V
Absolute accuracy
pressure
VDD = 3.3V
Resolution of
output data
Noise in pressure
(1)
Symbol
300 . . . 1100 hPa
0 . . . +65 °C
-4.0
-1.0
300 . . . 1100 hPa
-20 . . . 0 °C
-6.0
-1.0
1000
µA
(1)
+2.0
hPa
(1)
+4.5
hPa
pressure
0.01
hPa
temperature
0.1
°C
see table on page 12-13
The typical value is: -1±1
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Absolute accuracy
temperature
VDD = 3.3V
-1.5
±0.5
+1.5
°C
0 . . . +65 °C
-2.0
±1.0
+2.0
°C
ultra low power mode
3
4.5
ms
tc_p_std
standard mode
5
7.5
ms
tc_p_hr
high resolution mode
9
13.5
ms
tc_p_luhr
ultra high res. mode
17
25.5
ms
tc_p_ar
Advanced res. mode
51
76.5
ms
Conversion time
temperature
tC_temp
standard mode
3
4.5
ms
Serial data clock
fSCL
3.4
MHz
+2
hPa
Solder drifts
Minimum solder
height 50µm
2
Long term stability
3
@ 25 °C
tc_p_low
Conversion time
pressure
2
Page 7
3
12 months
-0.5
±1.0
hPa
verified with BST customer shuttle boards
Long term stability is specified in the full accuracy operating pressure range 0 … 65°C
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 8
2. Absolute maximum ratings
Table 2: Absolute maximum ratings
Parameter
Condition
Storage temperature
Supply voltage
ESD rating
all pins
Min
Max
Units
-40
+85
°C
-0.3
+4.25
V
±2
kV
10,000
hPa
HBM, R = 1.5kΩ,
C = 100pF
Overpressure
The BMP183 has to be handled as Electrostatic Sensitive Device (ESD).
Figure 1: ESD
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 9
3. Operation
3.1 Power supply and power on sequence
The BMP183 has two distinct power supply pins: VDD and VDDIO. VDD powers the internal digital
and analogue circuitry and should not suffer from large voltage spikes. VDDIO is the supply for the
digital interface and must match the voltages on the SPI interface. In case the voltage range allows it,
VDD and VDDIO can be fed from a single supply line which must be >1.8V.
The preferred power on sequence is VDD first. Even though VDDIO can be powered on before VDD,
there is a chance of excessive power consumption (a few mA) if this sequence is used, and the state
of the output pins is undefined so that the bus can be locked. Therefore, VDD must be powered
before VDDIO unless the limitations above are understood and not critical.
3.2 General description
The BMP183 is designed to be connected directly to a microcontroller of a mobile device via the SPI
bus. The pressure and temperature data has to be compensated by the calibration data of the
E2PROM of the BMP183.
3.3 General function and application schematics
The BMP183 consists of a piezo-resistive sensor, an analog to digital converter and a control unit
with E2PROM and a SPI interface. The BMP183 delivers the uncompensated value of pressure and
temperature. The E2PROM has stored 176 bit of individual calibration data. This is used to
compensate offset, temperature dependence and other parameters of the sensor.
UP = pressure data (16 to 19 bit)
UT = temperature data (16 bit)
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 10
Figure 2 depicts a typical circuit connecting BMP183 to the micro controller, power supply and GND.
VDD
VDDIO
CSB
GND
7
SDI
6
SDI
SCK
SDO
VDD
SCK
2
5
VDDIO
SDO
4
VDDIO
SPI interface
CSB
1
micro
controller
C1
3
BMP183
C2
Figure 2: Typical application circuit
Note: Support capacitors for SPI bus required: C1=C2=100nF.
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 11
3.4 Measurement of pressure and temperature
For all calculations presented here an ANSI C code is available from Bosch Sensortec (“BMP18x
_API”).
The microcontroller sends a start sequence to start a pressure or temperature measurement. After
converting time, the result value (UP or UT, respectively) can be read via the interface. For
calculating temperature in °C and pressure in hPa, the calibration data has to be used. These
constants can be read out from the BMP183 E2PROM via the interface at software initialization.
The sampling rate can be increased up to 128 samples per second (standard mode) for dynamic
measurement. In this case, it is sufficient to measure the temperature only once per second and to
use this value for all pressure measurements during the same period.
Start
Start temperature
measurement
wait 4.5 ms
Read UT
Start pressure
measurement
wait (depends on mode, see below)
Read UP
calculate pressure and
temperature in physical
units
Figure 3: Measurement flow BMP183
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 12
3.4.1 Hardware pressure sampling accuracy modes
By using different modes the optimum compromise between power consumption, speed and
resolution can be selected, see below table.
Table 3: Overview of BMP183 hardware accuracy modes, selected by driver software via the
variable oversampling_setting
Mode
ultra low power
RMS
RMS
noise
noise
typ.
typ.
[hPa]
[m]
3
0.06
0.5
Internal
Conversion time
Avg. current @
Parameter
number of
pressure max.
1 sample/s typ.
oversampling_setting
samples
[ms]
[µA]
1
4.5
0
standard
1
2
7.5
5
0.05
0.4
high resolution
2
4
13.5
7
0.04
0.3
ultra high resolution
3
8
25.5
12
0.03
0.25
For further information on noise characteristics see the relevant application note “Noise in pressure
sensor applications”.
All modes can be performed at higher speeds, e.g. up to 128 times per second for standard mode,
with the current consumption increasing proportionally to the sample rate.
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 13
3.4.2 Software pressure sampling accuracy modes
For applications where a low noise level is critical, averaging is recommended if the lower bandwidth
is acceptable. Oversampling can be enabled using the software API driver (with OSR = 3).
Table 4: Overview of BMP183 software accuracy mode,
selected by driver software via the variable software_oversampling_setting
software_
Mode
Parameter
oversampling_setting
Avg. current
oversampl
time
@1
RMS noise
RMS noise
ing_settin
pressure
sample/s
typ. [hPa]
typ. [m]
g
max. [ms]
typ. [µA]
1
76.5
32
0.02
0.17
Advanced
resolution
Conversion
3
3.5 Calibration coefficients
The 176 bit E2PROM is partitioned in 11 words of 16 bit each. These contain 11 calibration
coefficients. Every sensor module has individual coefficients. Before the first calculation of
temperature and pressure, the master reads out the E2PROM data.
The data communication can be checked by checking that none of the words has the value 0 or
0xFFFF.
Table 5: Calibration coefficients
BMP183 reg adr
Parameter
MSB
LSB
AC1
0xAA
0xAB
AC2
0xAC
0xAD
AC3
0xAE
0xAF
AC4
0xB0
0xB1
AC5
0xB2
0xB3
AC6
0xB4
0xB5
B1
0xB6
0xB7
B2
0xB8
0xB9
MB
0xBA
0xBB
MC
0xBC
0xBD
MD
0xBE
0xBF
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 14
3.6 Calculating pressure and temperature
The mode (ultra low power, standard, high, ultra high resolution) can be selected by the variable
oversampling_setting (0, 1, 2, 3) in the C code.
Calculation of true temperature and pressure in steps of 1Pa (= 0.01hPa = 0.01mbar) and
temperature in steps of 0.1°C.
The following figure shows the detailed algorithm for pressure and temperature measurement.
This algorithm is available to customers as reference C source code (“BMP18x_API”) from Bosch
Sensortec and via its sales and distribution partners. Please contact your Bosch Sensortec
representative for details.
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 15
Calculation of pressure and temperature for BMP183
type:
short
short
short
unsigned short
unsigned short
unsigned short
short
short
short
short
short
bmp180_get_ut
27898
long
short (0 .. 3)
BMP180_get_up
23843
long
long
long
long
long
long
long
long
long
long
long
long
long
unsigned long
long
long
long
long
long
long
long
Figure 4: Algorithm for pressure and temperature measurement
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 16
3.7 Calculating absolute altitude
With the measured pressure p and the pressure at sea level p0 e.g. 1013.25hPa, the altitude in
meters can be calculated with the international barometric formula:
p
altitude 44330 * 1 -
p0
1
5.255
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
-1000
11
00
10
00
90
0
80
0
70
0
60
0
50
0
Altitude in standard
atmosphere
40
0
30
0
Altitude above sea level [m]
Thus, a pressure change of ∆p = 1hPa corresponds to 8.43m at sea level.
Barometric pressure [hPa]
Figure 5: Transfer function: Altitude over sea level – Barometric pressure
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 17
3.8 Calculating pressure at sea level
With the measured pressure p and the absolute altitude the pressure at sea level can be calculated:
p0
p
altitude
1
44330
5.255
Thus, a difference in altitude of ∆altitude = 10m corresponds to 1.2hPa pressure change at sea level.
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 18
4. Global Memory Map
The memory map below shows all externally accessible data registers which are needed to operate
BMP183. The left columns show the memory addresses. The columns in the middle depict the
content of each register bit. The colors of the bits indicate whether they are read-only, write-only or
read- and writable. The memory is volatile so that the writable content has to be re-written after each
power-on.
Not all register addresses are shown. These registers are reserved for further Bosch factory testing
and trimming.
Register Name
out_xlsb
out_lsb
out_msb
ctrl_meas
soft reset
id
calib21 downto calib0
Register Adress
F8h
F7h
F6h
F4h
E0h
D0h
BFh down to AAh
Registers:
bit7
bit6
bit5
bit4
adc_out_xlsb
oss
Control
registers
Type: read / write
Calibration
registers
read only
bit3
bit2
bit1
bit0
Reset state
0
0
0
00h
00h
80h
00h
00h
55h
n/a
adc_out_lsb
adc_out_msb
sco
measurement control
reset
id
calib21 down to calib0
Data
registers
read only
Fixed
read only
Figure 6: Memory map
Measurement control (register F4h ): Controls measurements. Refer to Figure 6 for usage
details.
Sco (register F4h ): Start of conversion. The value of this bit stays “1” during conversion and is
reset to “0” after conversion is complete (data registers are filled).
Oss (register F4h ): controls the oversampling ratio of the pressure measurement (00b: single,
01b: 2 times, 10b: 4 times, 11b: 8 times).
Soft reset (register E0h): Write only register. If set to 0xB6, will perform the same sequence as
power on reset.
Chip-id (register D0h): This value is fixed to 0x55 and can be used to check whether
communication is functioning.
After conversion, data registers can be read out in any sequence (i.e. MSB first or LSB first). Using a
burst read is not mandatory.
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 19
5. SPI Interface
The BMP183 features a four wire SPI interface with clock speeds of up to 10 MHz. The interface is
four wire SPI with CPOL = 1, CPHA = 1 (SPI mode 3).
The SPI bus is used to control the sensor, to read calibration data from the E2PROM and to read the
measurement data when A/D conversion is finished.
5.1 SPI specification
Table 6: Electrical parameters for the SPI interface
Parameter
Symbol
Min.
Clock input frequency
fSCL
Input-low level
Typ
Max.
Units
0.0
10.0
MHz
VIL
0
0.2 * VDDIO
V
Input-high level
VIH
0.8 * VDDIO
VDDIO
V
SCK low pulse
Tlow_sck4
20
ns
SCK high pulse
Thigh_sck_4
20
ns
SDI setup time
Tsetup_sdi_4
20
ns
SDI hold time
Thold_sdi_4
20
ns
SDO output delay
Tdelay_sdo_4
CSB setup time
Tsetup_csb_4
20
ns
CSB hold time
Thold_csb_4
20
ns
Start-up time after power-up,
before first communication
tStart
10
ms
30
ns
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 20
5.2 SPI protocol
CSB is active low with pull-up resistor integrated. Data on SDI is latched by BMP183 at SCK
rising edge and SDO is changed at SCK falling edge. Communication starts when CSB goes to low
and stops when CSB goes to high; during these transitions on CSB, SCK must be high.
In the SPI protocol, the MSB of the register address remains is not used. For example, register 0xF7
is addressed by 0x77 in SPI mode. Bit 7 is replaced by an R/W bit (read: „1‟, write: „0‟).
Figure 7: SPI protocol
When write is required, sequences of two bytes are required: one control byte to define the address
to be written to and one data byte which is written:
Figure 8: SPI write of two bytes
When read is required, the sequence consists in one control byte to define the first address to be read followed
by data bytes. Addresses are automatically incremented.
Figure 9: SPI read of two bytes
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 21
5.3 Start temperature and pressure measurement
Pressure and temperature measurement are always initiated by the bus master. A write command
into register 0xF4 will start temperature or pressure measurement. The result can be read out after
respecting the conversion time delay.
In Table 7, the write values for the different commands are listed.
Measurement
Control register value
(register address 0xF4)
Max. conversion time
[ms]
Temperature
0x2E
4.5
Pressure
(oss = 0)
0x34
4.5
Pressure
(oss = 1)
0x74
7.5
Pressure
(oss = 2)
0xB4
13.5
Pressure
(oss = 3)
0xF4
25.5
Table 7: Control registers values for different internal oversampling_setting (oss)
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 22
5.4 Read A/D conversion result or NVM data
To read out the temperature data word UT (16 bit), the pressure data word UP (16 to 19 bit) and
the NVM data proceed as follows:
After lowering CSB, the master send the read command with the register start address.
NVM data registers:
0xAA (to read 0xAA – 0xBF)
ADC results UT or UP: 0xF6 (to read 0xF6 – 0xF7, optionally 0xF8)
After writing the read command + register address, the master sends further clock cycles in order to
allow for the BMP183 to output the data to the SDO pin.
For ultra high resolution, the XLSB register with address 0xF8 can be read to extend the 16 bit word
to up to 19 bits.
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 23
6. Package
6.1 Pin configuration
Picture shows the device in top view. Device pins are shown here transparently only for orientation
purposes.
1
7
6
2
5
3
4
Figure 10: Layout pin configuration BMP183
Table 8: Pin configuration BMP183
in No
Name
Function
1
CSB
Chip select
2
VDD
Digital and analog power supply
3
VDDIO
Interface power supply
4
SDO
SPI data output
5
SCK
SPI clock input
6
SDI
SPI data input
7
GND
Ground; connected to lid
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 24
6.2 Outline dimensions
The sensor housing is a 7Pin LGA package with metal lid. Its dimensions are 3.60mm (±0.1 mm) x
3.80mm (±0.1 mm) x 0.93mm (±0.07 mm).
Note: All dimensions are in mm.
6.2.1 Bottom view
0,50
0,60
Figure 11: Bottom view BMP183
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 25
6.2.2 Top view
Figure 12: Top view BMP183
6.2.3 Side view
Figure 13: Side view BMP183
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 26
6.3 Moisture sensitivity level and soldering
The BMP183 is classified MSL 1 (moisture sensitivity level) according to IPC/JEDEC standards JSTD-020D and J-STD-033A.
The device can be soldered Pb-free with a peak temperature of 260°C for 20 to 40 sec. The
minimum height of the solder after reflow shall be at least 50µm. This is required for good
mechanical decoupling between the sensor device and the printed circuit board (PCB).
To ensure good solder-ability, the devices shall be stored at room temperature (20°C).
The soldering process can lead to an offset shift.
6.4 RoHS compliancy
The BMP183 sensor meets the requirements of the EC directive "Restriction of hazardous
substances (RoHS)", please refer also to:
"Directive 2002/95/EC of the European Parliament and of the Council of 27 January 2003 on the
restriction of the use of certain hazardous substances in electrical and electronic equipment".
The BMP183 sensor is also halogen-free.
6.5 Mounting and assembly recommendations
In order to achieve the specified performance for you design, the following recommendations and the
“Handling, soldering & mounting instructions BMP183” should be taken into consideration when
mounting a pressure sensor on a printed-circuit board (PCB):
The clearance above the metal lid shall be 0.1mm at minimum.
For the device housing appropriate venting needs to be provided in case the ambient
pressure shall be measured.
Liquids shall not come into direct contact with the device.
During operation the sensor is sensitive to light, which can influence the accuracy of the
measurement (photo-current of silicon).
The BMP183 shall not the placed close the fast heating parts. In case of gradients > 3°C/sec.
it is recommended to follow Bosch Sensortec application note ANP015, "Correction of errors
induced by fast temperature changes". Please contact your Bosch Sensortec representative
for details.
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 27
7. Legal disclaimer
7.1 Engineering samples
Engineering Samples are marked with an asterisk (*) or (e). Samples may vary from the valid
technical specifications of the product series contained in this data sheet. They are therefore not
intended or fit for resale to third parties or for use in end products. Their sole purpose is internal
client testing. The testing of an engineering sample may in no way replace the testing of a product
series. Bosch Sensortec assumes no liability for the use of engineering samples. The Purchaser
shall indemnify Bosch Sensortec from all claims arising from the use of engineering samples.
7.2 Product use
Bosch Sensortec products are developed for the consumer goods industry. They may only be used
within the parameters of this product data sheet. They are not fit for use in life-sustaining or security
sensitive systems. Security sensitive systems are those for which a malfunction is expected to lead
to bodily harm or significant property damage. In addition, they are not fit for use in products which
interact with motor vehicle systems.
The resale and/or use of products are at the purchaser‟s own risk and his own responsibility. The
examination of fitness for the intended use is the sole responsibility of the Purchaser.
The purchaser shall indemnify Bosch Sensortec from all third party claims arising from any product
use not covered by the parameters of this product data sheet or not approved by Bosch Sensortec
and reimburse Bosch Sensortec for all costs in connection with such claims.
The purchaser must monitor the market for the purchased products, particularly with regard to
product safety, and inform Bosch Sensortec without delay of all security relevant incidents.
7.3 Application examples and hints
With respect to any examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Bosch Sensortec hereby disclaims any and all
warranties and liabilities of any kind, including without limitation warranties of non-infringement of
intellectual property rights or copyrights of any third party. The information given in this document
shall in no event be regarded as a guarantee of conditions or characteristics. They are provided for
illustrative purposes only and no evaluation regarding infringement of intellectual property rights or
copyrights or regarding functionality, performance or error has been made.
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
Data sheet
BMP183
Page 28
8. Document history and modification
Rev. No Chapter Description of modifications/changes
1.0
All
Document creation
Date
13-06-2012
Bosch Sensortec GmbH
Gerhard-Kindler-Strasse 8
72770 Reutlingen / Germany
contact@bosch-sensortec.com
www.bosch-sensortec.com
Modifications reserved | Printed in Germany
Specifications are subject to change without notice
Revision_1.0_062012
Document number: BST-BMP183-DS000-00
BST-BMP183-DS000-00 | Revision 1.0 | June 2012
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.
工商网监
湘ICP备2023018690号
