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Command

Hex code

Fetch Data

0x E0 00

Table 12. Fetch Data command (Clear blocks are controlled by the microcontroller, grey blocks by the

sensor).

4.7 ART Command

The ART (accelerated response time) feature can be activated by issuing the command in Table

13. After issuing the ART command the sensor will start acquiring data with a frequency of 4 Hz.

The ART command is structurally similar to any other command in Table 11. Hence section 4.5

applies for starting a measurement, section 4.6 for reading out data and section 4.8 for stopping

the periodic data acquisition. The ART feature can also be evaluated using the Evaluation Kit EK-

H5 from Sensirion.

Command

Hex Code

Periodic Measurement with ART

0x2B32

Table 13. Command for a periodic data acquisition with the ART feature (Clear blocks are controlled by the

microcontroller, grey blocks by the sensor).

4.8 Break command / Stop Periodic Data Acquisition Mode

The periodic data acquisition mode can be stopped using the break command shown in Table 14.

It is recommended to stop the periodic data acquisition prior to sending another command (except

Fetch Data command) using the break command. Upon reception of the break command the

sensor will abort the ongoing measurement and enter the single shot mode. This takes 1 ms.

Command

Hex Code

Break

0x3093

Table 14. Break command (Clear blocks are controlled by the microcontroller, grey blocks by the sensor).

S

W

I2C Address

1

2

3

4

5

6

7

8

9

Command MSB

1

2

3

4

5

6

7

8

9

Command LSB

10 11 12 13 14 15 16 17 18

16-bit command

I2C write header