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STM32G483CEH3 Datasheet(PDF) 24 Page - STMicroelectronics

Part # STM32G483CEH3
Description  Arm® Cortex®-M4 32-bit MCUFPU, up to 512 KB Flash, 170 MHz / 213 DMIPS, 128 KB SRAM, rich analog, math accelerator, AES
PDF  230 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32G483CEH3 Datasheet(HTML) 24 Page - STMicroelectronics

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Functional overview
STM32G483xE
24/230
DS12997 Rev 4
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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