Figure 3-5. Kit Modifications

GPIO straps (bottom side)

VTG strap (top side)

3.5

Current Measurement

The power to the ATmega4809 is connected from the onboard power supply to the target voltage supply

(VTG) with a cut strap as shown in Section 3.4 Disconnecting the Onboard Debugger. To measure the

power consumption of the ATmega4809 and other peripherals connected to the board, cut the strap and

connect an ammeter over the strap. The ammeter can be connected between the target VTG pad edge

connector and an external power supply for easy measurement. Alternatively, an external power supply

can be used as described in Section 3.3.2 External Supply.

Info:  The onboard level shifters will draw a small amount of current even when they are not in

use. A maximum of 10 µA can be drawn from the VTG net and an additional 2 µA can be drawn

from each I/O pin connected to a level shifter for a total of 20 µA. Disconnect the onboard

debugger and level shifters as described in Section 3.4 Disconnecting the Onboard Debugger

to prevent any leakage.

ATmega4809 Curiosity Nano

Curiosity Nano

User Guide

DS50002804A-page 13