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Version 3 – August 2020

15/23

Bit

Field description

Default

value

15

Alert pending status

'0': no pending alerts

'1': at least one pending alert

‘1’

14

Reserved

‘0’

13

Heater status

‘0’ : Heater OFF

‘1’ : Heater ON

‘0’

12

Reserved

‘0’

11

RH tracking alert

‘0’ : no alert

‘1’ . alert

‘0

10

T tracking alert

‘0’ : no alert

‘1’ . alert

‘0’

9:5

Reserved

‘xxxxx’

4

System reset detected

'0': no reset detected since last ‘clear

status register’ command

'1': reset detected (hard reset, soft reset

command or supply fail)

‘1’

3:2

Reserved

‘00’

1

Command status

'0': last command executed successfully

'1': last command not processed. It was

either invalid, failed the integrated

command checksum

‘0’

0

Write data checksum status

'0': checksum of last write transfer was

correct

'1': checksum of last write transfer failed

‘0’

Table 17: Description of the status register.

Clear Status Register

All flags (Bit 15, 11, 10, 4) in the status register can be cleared (set to zero) by sending the command shown in Table

18.

Command

Hex Code

Clear status register

0x 30 41

Table 18: Command to clear the status register (Clear

blocks are controlled by the microcontroller, grey blocks by

the sensor).