Data Sheet
39
Rev. 1.00
2017-07-31
TLE9263BQXV33
System Features
5.2.2
Cyclic Wake
The cyclic wake feature is intended to reduce the quiescent current of the device and application.
For the cyclic wake feature one or both timers are configured as internal wake-up source and will periodically
trigger an interrupt in SBC Normal and SBC Stop Mode.
The correct sequence to configure the cyclic wake is shown in
Figure 10
. The sequence is as follows:
•
First, disable the timers to ensure that there is not unintentional interrupt when activating cyclic wake,
•
Enable Timer1 and/or Timer2 as a wake-up source in the register
WK_CTRL_1
,
•
Configure the respective period Timer1 and/or Timer2. Also an on-time (any value) must be selected to start
the cyclic wake even if the value is ignored.
Figure 10 Cyclic Wake: Configuration and Sequence
As in cyclic sense, the cyclic wake function will start as soon as the on-time is configured. An interrupt is
generated for every start of the on time except for the very first time when the timer is started
Cyclic Wake Configuration
Cyclic Wake starts / ends by
setting / clearing On-time
INT is pulled low at every rising edge
of On-time except first one
Select Timer Period and any
On-Time in
TIMERX_CTRL
Periods : 10, 20, 50, 100, 200 ms, 1s, 2s
On-times: any
(OFF/LOW & OFF/HIGH are not allowed )
Disable Timer1 and/or Timer2 as a
wake source in
WK_CTRL_1
To avoid unintentional interrupts
Select Timer1 and/or Timer2 as a
wake source in
WK_CTRL_1
No interrupt will be generated ,
if the timer is not enabled as a wake source
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