Connecting External Debuggers - Microchip Technology ATmega4809 Curiosity Nano User Manual

7.2

Connecting External Debuggers

Even though there is an onboard debugger, external debuggers can be connected directly to
ATmega4809 Curiosity Nano to program/debug the ATmega4809. The onboard debugger keeps all the
pins connected to the ATmega4809 and board edge in tri-state when not actively used. Therefore, the
onboard debugger will not interfere with any external debug tools.
Figure 7-2. Connecting the PICkit
CDC RX
CDC TX
©
2018 Microchip Technology Inc.
™
4 to ATmega4809 Curiosity Nano
MPLAB® PICkit™ 4
NC
ID
DBG1
DBG2
CURIOSITY NANO
ATmega4809 Curiosity Nano
8 7 6 5 4 3 2 1
V
Ground
DATA
USB
PS LED
DEBUGGER
User Guide
1 = Unused
2 = V
DD
3 = Ground
4 = PGD
5 = Unused
6 = Unused
7 = Unused
8 = Unused
DD
VBUS
VOFF
DBG3
DBG0
GND
VTG
DS50002804A-page 21
Appendix