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STM32L4A6XG 데이터시트(PDF) 35 Page - STMicroelectronics

부품명 STM32L4A6XG
상세설명  Ultra-low-power Arm® Cortex®-M4 32-bit MCUFPU, 100DMIPS, 1MB Flash, 320KB SRAM, USB OTG FS, audio, AESHASH, ext. SMPS
PDF  282 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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STM32L4A6XG 데이터시트(HTML) 35 Page - STMicroelectronics

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STM32L4A6xG
Functional overview
61
present. The VBAT pin supplies the RTC with LSE and the backup registers. Three anti-
tamper detection pins are available in VBAT mode.
VBAT operation is automatically activated when VDD is not present.
An internal VBAT battery charging circuit is embedded and can be activated when VDD 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. STM32L4A6xG peripherals interconnect matrix
Interconnect source
Interconnect
destination
Interconnect action
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
YY
YY
-
-
LPTIMERx
Low-power timer triggered by analog
signals comparison
YY
YY
Y
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
YY
YY
Y
Y
(1)
All clocks sources (internal
and external)
TIM2
TIM15, 16, 17
Clock source used as input channel for
RC measurement and trimming
YY
YY
-
-
USB
TIM2
Timer triggered by USB SOF
Y
Y
-
-
-
-



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