HP206C Datasheet, PDF (7/17 Pages) List of Unclassifed Manufacturers – PRECISION BAROMETER AND ALTIMETER SENSOR

DataSheet
HP206C
For Example : (Altitude)
Hex v alue
0x001388
0xFFEC78
OUT_A_MSB
0x00
0xFF
OUT_A_CSB
0x13
0xEC
OUT_A_LSB
0x88
0x78
Dec v alue
50.00
-50.00
4. 2.5 Read the Pressure Value
.READ_P (0x30)
The pressure data is arranged as 20-bit 2’s complement format and the unit is in Pascal. Pressure
value is stored in all 24 bits of OUT_T_MSB, OUT_T_CSB and OUT_T_LSB. The 4 most
significant bits of the 24-bit data is useless, while the 20 least significant bits represent the
pressure value. The user shall convert this 20-bit unsigned binary value into an integer, and then
divide the integer by 100 to obtain the final result.
4. 2.6 Read the Altitude Value
.READ_A (0x31)
The altitude data is arranged as 20-bit 2’s complement format and the unit is in meters. Altitude
value is stored in all 24 bits of OUT_T_MSB, OUT_T_CSB and OUT_T_LSB. The 4 most
significant bits of the 24-bit data is useless, while the 20 least significant bits represent the altitude
value. The user shall convert this 20-bit unsigned binary value into an integer, and then divide the
integer by 100 to obtain the final result.
4. 2.7 Read the Temperature Value
.READ_T (0x32)
The temperature data is arranged as 20-bit 2’s complement format and the unit is in degrees
C.Temperature value is stored in all 24 bits of OUT_T_MSB, OUT_T_CSB and OUT_T_LSB. The 4
most significant bits of the 24-bit data is useless, while the 20 least significant bits represent the
temperature value. The user shall convert this 20-bit 2’s complement binary value into an integer, and
then divide the integer by 100 to obtain the final result.
4. 2.8 Re-calibrate the Internal analog Blocks
.ANA_CAL (0x28)
This command allows the user to re-calibrate the internal circuitries in a shorter time compare to soft
resetting the device. It is designed for the applications where the device needs to work in a rapidly changed
environment. In those environments, since the temperature and supply voltage may have changed
significantly since the first power-up sequence during which the calibrations have been performed, the
circuitries may not adept to the world as better as they were just calibrated. Therefore, in this case,
re-calibrating the circuitries before performing any sensor conversions can give a more accurate result.
Once the device received this command, it calibrates all the circuitries and enters the sleep state when it
finishes. The user can simply send this command to the device before sending the ADC_CVT command.
However, it is not necessary to use this command when the environment is stable.
4. 2.9 Read the Control Registers
.READ_REG (0x80+ register address)
This command allows the user to read out the control registers.
4. 2.10 Write the Control Registers
.WRITE_REG (0xc0 + register address)
This command allows the user to write in the control register
HP206C_DataSheet_EN_V2.0
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