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HP203B Datasheet(PDF) 8 Page - List of Unclassifed Manufacturers

Part No. HP203B
Description  PRECISION BAROMETER AND ALTIMETER SENSOR
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Maker  ETC2 [List of Unclassifed Manufacturers]
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HP203B Datasheet(HTML) 8 Page - List of Unclassifed Manufacturers

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HP203B
HP203B_DataSheet_EN_V2.0
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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
Table6: The Command Set
Name
Hex Code
Binary Code
Descriptions
SOFT_RST
0x06
0000 0110
Soft reset the device
ADC_CVT
NA
010_OSR_chnl
Perform ADC conversion
READ_PT
0x10
0001 0000
Read the temperature and pressure values
READ_AT
0x11
0001 0001
Read the temperature and altitude values
READ_P
0x30
0011 0000
Read the pressure value only
READ_A
0x31
0011 0001
Read the altitude value only
READ_T
0x32
0011 0010
Read the temperature value only
ANA_CAL
0x28
0010 1000
Re-calibrate the internal analog blocks
READ_REG
NA
10_addr
Read out the control registers
WRITE_REG
NA
11_addr
Write in the control registers
5. I²C Interface
The I²C interface is fully compatible to the official I²C protocol specification. All the data are sent
starting from the MSB. Successful communication between the host and the device via the I²C bus
can be done using the four types of protocol introduced below.
5.1 I²C Specification
Table7: I²C Slave Timing Values
Parameter
Symbol
I²C
Unit
Condition
Min
Typ.
Max
SCL Clock Frequency
FSCL
Pull-up = 10 kΩ
0
100
400
kHz
Bus free time between STOP and START
condition
tBUF
1.5
µs
Repeated START Hold Time
tHD.STA
0.6
µs
Repeated START Setup Time
tSU.STA
0.6
µs
STOP Condition Setup Time
tSU.STO
0.6
µs
SDA Data Hold Time
tHD.DAT
100
ns
SDA Setup Time
tSU.DAT
100
ns
SCL Clock Low Time
tLOW
1.5
µs
SCL Clock High Time
tHIGH
0.6
µs
SDA and SCL Rise Time
tR
30
500
ns
SDA and SCL Fall Time
tF
30
500
ns


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