Data Sheet

16
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HTE501
6.6 Fetch Periodic RH&T Measurement Results (0xE000)
Readout of calculation results in periodic measurement mode can be performed using the fetch command.
This is similar to the readout of measurement results in single-shot mode, except that clock stretching is
always disabled. The slave will answer with NACK if no measurement results are available.
Command CMD Hex Code
Fetch data 0xE000
I²C
Datenstruktur
7654321 76543210 76543210 7654321
S
W
0
A
0
A
0
A
0
S
R
1
A
0
76543210 76543210 76543210
A
0
A
0
A
0
76543210 76543210 76543210
A
0
A
0
N
1
P
R / W
!
R / W
I2C ADDRESS
CMD MSB
NEXT2
I2C ADDRESS
TEMPERATURE MSB
2
TEMPERATURE LSB CRC8
NEXT3
HUMIDITY MSB
3
HUMIDITY LSB CRC8
16 BIT COMMAND
CMD LSB
ASTRID_I2C_Befehle_version2 - Kopie / 0xE000 20.09.2021 \ Haider A.
Figure 15: Fetch command
This command is also suitable for reading out the measured data generated by the power-up procedure.
6.7 Fetch Td Measurement Results (0xE016)
Readout of latest Td results for can be performed using this command. The slave will answer with NACK in
case no measurement results are available.
Command CMD Hex Code
Fetch data 0xE016
I²C
Datenstruktur
Befehl: 0xE016
7654321 76543210 76543210 7654321
S
W
0
A
0
A
0
A
0
S
R
1
A
0
76543210 76543210 76543210
A
0
A
0
A
0
76543210 76543210 76543210
A
0
A
0
N
1
P
!
R / W R / W
I2C-ADDRESS
CMD MSB
NEXT2
I2C-ADDRESS
Dew point MSB
2
Dew point LSB CRC8
NEXT3
reserved MSB
3
reservedLSB
CRC8
16 BIT COMMAND
CMD LSB
ASTRID_I2C_Befehle_version2 - Kopie / 0xE016 15.10.2021 \ Haider A.
Figure 16: Fetch command