Figure 5-2. Attaching Pin-Headers to the Curiostiy Nano Board
Figure 5-3. Connecting to Curiosity Nano Base for Click boards
™
Tip:
Start at one end of the pin header and gradually insert the header along the length of the board.
Once all the pins are in place, use a flat surface to push them in.
Tip:
For applications where the pin headers will be used permanently, it is still recommended to solder
them in place.
Important:
Once the pin headers are in place, they are hard to remove by hand. Use a set of pliers and
carefully remove the pin headers to avoid damage to the pin headers and PCB.
5.1.3
Multi-Voltage I/O
The AVR128DB48 Curiosity Nano MCU has support for Multi-Voltage I/O (MVIO). AVR128DB48 MVIO pins are
connected to the
at PC0-PC7. MVIO pins are capable of regular I/O-pin behavior.
MVIO can be configured in one of two supply modes:
• Single-Supply mode: All I/O pins, including MVIO-capable pins, are powered by VCC_TARGET. By default,
VCC_TARGET is connected to VDDIO2 through a 0-ohm resistor (R204).
• Dual-Supply mode: MVIO-capable pins are powered by an external power supply connected to VDDIO2. Non-
MVIO pins are powered by VCC_TARGET.
Dual-Supply mode allows MVIO-pins to be powered at different voltages than pins powered from VCC_TARGET.
AVR128DB48 Curiosity Nano
Hardware User Guide
©
2020 Microchip Technology Inc.
User Guide
DS50003037A-page 27
