Datasheet

Bosch Sensortec | BME680 Datasheet
30 | 50
Modifications reserved |Data subject not change without notice | Printed in Germany
Document number: BST-BME680-DS001-00 Revision_1.0_072017
5.3.3.3 Gas Sensor wait time - gas_wait_x
Referring to Figure 1, the time between the beginning of the heat phase and the start of gas sensor resistance conversion
depends on gas_wait_x setting as mentioned below.
Heater set-point
Register name
Address
Content
Description
0...9
gas_wait_x
x is from 0 to 9
0x64…0x6D
gas_wait_x<5:0>
x is from 0 to 9
64 timer values with
1 ms step sizes, all zeros
means no wait
0...9
gas_wait_x
x is from 0 to 9
0x64…0x6D
gas_wait_x<7:6>
x is from 0 to 9
Please refer to the table below
for settings
gas_wait_x<7:6>
Gas sensor wait time multiplication factor
00
1
01
4
10
16
11
64
5.3.3.4 Heater off - heat_off
Register Name
Address
Content<bit
position>
Description
ctrl_gas_0
0x70
heat_off <3>
Turn off current injected to heater by setting bit to
one