Datasheet

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Version 1.0 – July 2020 – D1
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Byte number
Description
Value
0, 1
two bytes
0xD4 00: all tests passed successfully
0x4B 00: one or more tests have failed
2
CRC byte for bytes 0, 1
–
Table 13 Returned values by the I
2
C built-in self-test command.
Return to Idle Mode
Command
Command hex. code
Description
sgp40_heater_off
0x36 15
This command turns the hotplate off and stops the measurement.
Subsequently, the sensor enters the idle mode.
Table 14 Description of the I
2
C heater off command.
Soft Reset
Command
Command hex. code
Description
soft_reset
0x00 06
This command is a general call resetting all devices connected to
the same I
2
C bus. The first byte refers to the general call address
and the second byte refers to the reset command. After calling
this command, the SGP40 will restart entering the idle mode.
Table 15 Description of the I
2
C general soft reset command.