Figure 3-10. Curiosity Nano Standard Pinout

USB

DEBUGGER

PS LED

NC

ID

CDC RX

CDC TX

DBG1

DBG2

VBUS

VOFF

DBG3

DBG0

GND

VTG

CURIOSITY NANO

Table 3-4. Programming and Debugging Interfaces

Curiosity Nano Pin

UPDI

ICSP™

SWD

DBG0

UPDI

DATA

SWDIO

DBG1

-

CLK

SWCLK

DBG2

-

-

-

DBG3

-

#MCLR

#RESET

3.6

Connecting External Debuggers

Even though there is an on-board debugger, external debuggers can be connected directly to the ATtiny1627

Curiosity Nano to program/debug the ATtiny1627. The on-board debugger keeps all the pins connected to the

ATtiny1627 and board edge in tri-state when not actively used. Therefore, the on-board debugger will not interfere

with any external debug tools.

ATtiny1627

Curiosity Nano

© 2020 Microchip Technology Inc.

User Guide

DS40002199A-page 21