STM32L443CC datasheet(27/207 Pages) STMICROELECTRONICS

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DocID028739 Rev 2

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STM32L443CC STM32L443RC STM32L443VC

Functional overview

3.10

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 4. STM32L443xx peripherals interconnect matrix

Interconnect source

Interconnect

destination

Interconnect action

TIMx

Timers synchronization or chaining

ADCx

DACx

Conversion triggers

DMA

Memory to memory transfer trigger

COMPx

Comparator output blanking

COMPx

TIM1

TIM2

Timer input channel, trigger, break from

analog signals comparison

LPTIMERx

Low-power timer triggered by analog

signals comparison

(1)

ADCx

TIM1

Timer triggered by analog watchdog

RTC

TIM16

Timer input channel from RTC events

LPTIMERx

Low-power timer triggered by RTC alarms

or tampers

(1)

All clocks sources (internal

and external)

TIM2

TIM15, 16

Clock source used as input channel for

RC measurement and trimming

USB

TIM2

Timer triggered by USB SOF

CSS

CPU (hard fault)

RAM (parity error)

Flash memory (ECC error)

COMPx

PVD

TIM1

TIM15,16

Timer break

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