Datasheet

DS11585 Rev 9 35/272
STM32L496xx Functional overview
61
An internal VBAT battery charging circuit is embedded and can be activated when V
DD
is
present.
Note: When the microcontroller is supplied from VBAT, external interrupts and RTC alarm/events
do not exit it from VBAT operation.
3.11 Interconnect matrix
Several peripherals have direct connections between them. This allows autonomous
communication between peripherals, saving CPU resources thus power supply
consumption. In addition, these hardware connections allow fast and predictable latency.
Depending on peripherals, these interconnections can operate in Run, Sleep, low-power run
and sleep, Stop 0, Stop 1 and Stop 2 modes.
Table 6. STM32L496xx peripherals interconnect matrix
Interconnect source
Interconnect
destination
Interconnect action
Run
Sleep
Low-power run
Low-power sleep
Stop 0 / Stop 1
Stop 2
TIMx
TIMx Timers synchronization or chaining Y Y Y Y - -
ADCx
DAC1
DFSDM1
Conversion triggers Y Y Y Y - -
DMA Memory to memory transfer trigger Y Y Y Y - -
COMPx Comparator output blanking Y Y Y Y - -
TIM16/TIM17 IRTIM Infrared interface output generation Y Y Y Y - -
COMPx
TIM1, 8
TIM2, 3
Timer input channel, trigger, break from
analog signals comparison
YYYY - -
LPTIMERx
Low-power timer triggered by analog
signals comparison
YYYYY
Y
(1)
ADCx TIM1, 8 Timer triggered by analog watchdog Y Y Y Y - -
RTC
TIM16 Timer input channel from RTC events Y Y Y Y - -
LPTIMERx
Low-power timer triggered by RTC alarms
or tampers
YYYYY
Y
(1)
All clocks sources (internal
and external)
TIM2
TIM15, 16, 17
Clock source used as input channel for
RC measurement and trimming
YYYY - -
USB TIM2 Timer triggered by USB SOF Y Y - - - -
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