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PDF HP206C Data sheet ( Hoja de datos )
| Número de pieza | HP206C | |
| Descripción | I2C PRECISION BAROMETER AND ALTIMETER | |
| Fabricantes | HOPERF | |
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◎ HP206C
I2C PRECISION BAROMETER AND ALTIMETER
Features
1.8V to 3.6V Supply Voltage
Full Data Compensation
Command-based Reading, Compensated (Optional)
- Pressure: 20-bit Measurement (Pascals)
- Altitude: 20-bit Measurement (Meters)
- Temperature: 20-bit Measurement (°Celsius)
Configurable ADC Decimation Rate via Commands
Programmable Events and Interrupt Controls
Altitude Resolution down to 0.01 meter
High-speed I2C Digital Output Interface (Up to 10 MHz)
Application Examples
High Precision Mobile Altimeter / Barometer
Industrial Pressure and Temperature Sensor System
Automotive Systems
Personal Electronics Altimetry
Adventure and Sports watches
Medical Gas Control System
Weather Station Equipment
Indoor Navigation and Map Assist
Heating, Ventilation, Air Conditioning
Descriptions
The HP206C employs a MEMS pressure sensor with an I2C
interface to provide accurate Temperature, Pressure or Altitude
data. The sensor Pressure and Temperature outputs are digitized
by a high resolution 24-bit ADC. The Altitude value is calculated
by a specific patented algorithm according to the pressure and
temperature data. Data compensation is integrated internally to
save the effort of the external host MCU system. Easy
command-based data acquisition interface and programmable
interrupt control is available. Typical active supply current is 5.3
uA per measurement-second while the ADC output is filtered and
decimated by 256. Pressure output can be resolved with output in
fractions of a Pascal, and Altitude can be resolved in 0.01 meter.
The HP206C is offered in a 6.8 mm x 6.2 mm x 0.635(+0.2) mm
package and specified for operation from -40°C to 85°C.
Primary version. Do not guarantee all parameters.
Top view
Free Datasheet http://www.datasheet4u.com/
1 page  
2. Function Descriptions
GENERAL
The HP206C is a high precision barometer and altimeter
that measures the pressure and the temperature by an
internal 24‐bit ADC and compensates them by a
patented algorithm. The fully‐compensated values can
be read out via the I2C interface by external MCU. The
uncompensated values can also be read out in case the
user wants to perform their own data compensation. The
devices can also compute the value
of altitude according to the measured pressure and
temperature.
Furthermore, the device allows the user to setup the
temperature, pressure and altitude threshold values for
various events. Once the device detects that a certain
event has happened, a corresponding interrupt will be
generated and sent to the external MCU. Also, multiple
useful interrupt options are available to be used by the
user.
FACTORY CALIBRATION
Every device is individually factory calibrated for
sensitivity and offset for both of the temperature and
pressure measurements. The trim values are stored in
the on‐chip 128‐Byte Non‐Volatile Memory (NVM). In
normal situation, further calibrations are not necessary
to be done by the user. However, in order to realize the
highest possible accuracy, the device allows the users to
burn their own trim values into the empty bank of the
NVM using the provided CMOSTEK NVM PROGRAMMER.
Once a new bank of the NVM is programmed, the
original factory calibrated trim values will be replaced by
the newly programmed trim values.
Please refer to the document of AN301 for the details of
NVM programming and the AN302 for the details of
computing the correct trim values for each different
device.
AUTOMATIC POWER-UP
Once the device detects a valid VDD is externally
supplied, an internal Power‐On‐Reset (POR) is generated
and the device will automatically enter the power‐up
initialization sequence. After that the device will enter
the sleep state. Normally the entire power‐up sequence
consumes about 400 us.
HP206C
The user can scan a DEV_RDY bit in the INT_SRC register
in order to know whether the device has finished its
power‐up sequence. This bit appears to 1 when the
sequence is done. The device stays in the sleep state
unless it receives a proper command from the external
MCU. This will help to achieve minimum power
consumptions.
SENSOR OUTPUT CONVERSION
For each pressure measurement, the temperature is
always being measured prior to pressure measurement
automatically, while the temperature measurement can
be done individually. The conversion results are stored
into the embedded memories that retain their contents
when the device is in the sleep state.
The conversion time depends on the value of the DSR
parameter sent to the device within the ADC_CVT
command. Six options of the DSR can be chosen, range
from 128, 256 … to 4096. The below table shows the
conversion time according to the different values of
DSR:
Table 6: Conversion Time VS DSR
Conversion Time (ms)
DSR
Temperature Only
Temperature and
Pressure (or Altitude)
128 2.1
4.1
256 4.1
8.2
512 8.2
16.4
1024
16.4
32.8
2048
32.8
65.6
4096
65.6
131.1
The higher DSR will normally achieve higher measuring
precision, but consume more time and power.
The conversion results can be compensated or
uncompensated. The user can enable/disable the
compensation by setting the PARA register before
performing the conversions.
ALTITUDE COMPUTATION
The device can compute the altitude according to the
measured pressure and temperature. The altitude value
is updated and available to read as soon as the
temperature and pressure measurement is done.
3
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5 Page 
6. PACKAGE INFORMATION
HP206C
Mechanical Dimension (unit: mm)
9
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| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet HP206C.PDF ] | |
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