HP203B Datasheet, PDF (8/18 Pages) List of Unclassifed Manufacturers – PRECISION BAROMETER AND ALTIMETER SENSOR

DataSheet
HP203B
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
SOFT_RST 0x06
0000 0110
ADC_CVT
NA
010_OSR_chnl
READ_PT
0x10
0001 0000
READ_AT
0x11
0001 0001
READ_P
0x30
0011 0000
READ_A
0x31
0011 0001
READ_T
0x32
0011 0010
ANA_CAL
0x28
0010 1000
READ_REG NA
10_addr
WRITE_REG NA
11_addr
Descriptions
Soft reset the device
Perform ADC conversion
Read the temperature and pressure values
Read the temperature and altitude values
Read the pressure value only
Read the altitude value only
Read the temperature value only
Re-calibrate the internal analog blocks
Read out the control registers
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
SCL Clock Frequency
Bus free time between STOP and START
condition
Repeated START Hold Time
Repeated START Setup Time
STOP Condition Setup Time
SDA Data Hold Time
SDA Setup Time
SCL Clock Low Time
SCL Clock High Time
SDA and SCL Rise Time
SDA and SCL Fall Time
Symbol
F_SCL
t_BUF
t_HD.STA
t_SU.STA
t_SU.STO
t_HD.DAT
t_SU.DAT
t_LOW
t_HIGH
t_R
t_F
I²C
Condition Min
Pull-up = 10 kΩ
0
1.5
0.6
0.6
0.6
100
100
1.5
0.6
30
30
Typ.
100
Max
400
500
500
Unit
kHz
µs
µs
µs
µs
ns
ns
µs
µs
ns
ns
HP203B_DataSheet_EN_V2.0
www.hoperf.com
8 / 18