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STM32L4A6RG Folha de dados(PDF) 35 Page - STMicroelectronics |
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STM32L4A6RG Folha de dados(HTML) 35 Page - STMicroelectronics |
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35 / 282 page  DS11584 Rev 8 35/282 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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