User Manual

ams Datasheet Page 7
[v1-06] 2019-Feb-07 Document Feedback
CCS811 − Electrical Characteristics
Figure 7:
Timing Characteristics
Note(s):
1. nWAKE should be asserted prior to and during any I²C transaction.
2. Up to 70ms on the first Reset after new application download.
Parameters Conditions Min Typ Max Units
t
APP_START
Time between giving the APP_START
command in boot mode and the device
being ready for new I²C commands
1ms
t
WAKE
(1)
Time after falling nWAKE and the device
being ready for new I
2
C commands
50 µs
t
START
(2)
Time between power on and the device
being ready for new I²C commands
18 20 ms
Time after rising nRESET pin or giving the
SW_RESET command and the device
being ready for new I²C commands
12ms
t
DWAKE
Minimum time nWAKE should be high
after rising nWAKE
20 µs
t
DRESET
Minimum time nRESET should be high
after rising nRESET
20 µs
t
RESET
Minimum time nRESET should be low
after falling nRESET
15 µs
f
I²C
Frequency of I²C bus supported 10 100 400 kHz
t
I²C
Clock stretch duration 0 1 100 ms