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STM32WB15CC 데이터시트(PDF) 32 Page - STMicroelectronics

부품명 STM32WB15CC
상세설명  Multiprotocol wireless 32-bit MCU Arm®-based Cortex®-M4 with FPU, Bluetooth® 5.2 radio solution
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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STM32WB15CC 데이터시트(HTML) 32 Page - STMicroelectronics

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Functional overview
STM32WB15CC
32/127
DS13258 Rev 4
3.7.6
Reset mode
To improve the consumption under reset, the I/Os state under and after reset is “analog
state” (the I/O Schmitt trigger is disabled). In addition, the internal reset pull-up is
deactivated when the reset source is internal.
3.8
VBAT operation
The VBAT pin allows to power the device VBAT domain (RTC, LSE and Backup registers)
from an external battery, an external supercapacitor, or from VDD when no external battery
nor an external supercapacitor are present. One anti-tamper detection pin is 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 only from VBAT, external interrupts and RTC
alarm/events do not exit it from VBAT operation.
3.9
Interconnect matrix
Several peripherals have direct connections between them. This allows autonomous
communication between peripherals, saving CPU1 resources and, consequently, reducing
power supply consumption. In addition, these hardware connections result in fast and
predictable latency.
Depending on peripherals, these interconnections can operate in Run, Sleep, Low-power
run and Sleep, Stop 0 and Stop 1 modes.
Table 8. STM32WB15CC CPU1 peripherals interconnect matrix
Source
Destination
Action
TIMx
TIMx
Timers synchronization or chaining
Y
Y
Y
Y
-
ADC1
Conversion triggers
Y
Y
Y
Y
-
DMA
Memory to memory transfer trigger
Y
Y
Y
Y
-
COMP1
Comparator output blanking
Y
Y
Y
Y
-
COMPx
TIM1
TIM2
Timer input channel, trigger, break from
analog signals comparison
Y
YYY
-
LPTIMERx
Low-power timer triggered by analog
signals comparison
Y
YYY
Y
ADC1
TIM1
Timer triggered by analog watchdog
Y
Y
Y
Y
-
RTC
LPTIMERx
Low-power timer triggered by RTC
alarms or tampers
Y
YYY
Y



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