Microchip Technology ATmega4809 Xplained Pro Manual page 10

Table 3-5. Xplained Pro Power Header
Pin Number
1
2
3
4
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2020 Microchip Technology Inc.
Pin Name
VEXT_P5V0
GND
VCC_P5V0
VCC_P3V3
ATmega4809 Xplained Pro
Description
External 5V input pin
Ground pin
Unregulated 5V pin (an output, derived from one of the input
sources)
Regulated 3.3V pin (an output, used as the main power
supply for the kit)
User Guide
Xplained Pro
DS50002716C-page 10