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32G431 Datasheet(PDF) 24 Page - STMicroelectronics

No. de pieza 32G431
Descripción Electrónicos  Arm® Cortex®-M4 32-bit MCUFPU, 170 MHz /213 DMIPS,up to 128 KB Flash, 32 KB SRAM, rich analog, math accelerator
PDF  198 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

32G431 Datasheet(HTML) 24 Page - STMicroelectronics

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Functional overview
STM32G431x6 STM32G431x8 STM32G431xB
24/198
DS12589 Rev 6
3.11.6
VBAT operation
The VBAT pin allows to power the device VBAT domain from an external battery, an external
supercapacitor, or from VDD when there is no external battery and when an external
supercapacitor is present. The VBAT pin supplies the RTC with LSE and the backup
registers. Three anti-tamper detection pins are available in VBAT mode.
The 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, neither external interrupts nor RTC
alarm/events exit the microcontroller from the VBAT operation.



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