4.
Hardware User Guide
4.1
Connectors
4.1.1
ATmega4809 Curiosity Nano Pinout
All the ATmega4809 I/O pins are accessible at the edge connectors on the board. The image below shows the board
pinout. For all available functions on each pin, refer to the I/O Multiplexing and Considerations section in the
ATmega4809 data sheet.
Figure 4-1. ATmega4809 Curiosity Nano Pinout
USB
DEBUGGER
SW0
LED0
PS LED
ATmega4809
NC
NC
ID
ID
CDC RX
CDC RX
USART3 TX
PB0
CDC TX
CDC TX
USART3 RX
PB1
DBG1
DBG1
PF3
DBG2
DBG2
PF2
P
A0
PA0
USART0 TX
P
A1
PA1
USART0 RX
P
A2
PA2
TWI0 SDA
P
A3
PA3
TWI0 SCL
P
A4
PA4
SPI0 MOSI
P
A5
PA5
SPI0 MISO
P
A6
PA6
SPI0 SCK
P
A7
PA7
SPI0 SS
GND
GND
PC0
PC0
USART1 TX
PC1
PC1
USART1 RX
PC2
PC2
PC3
PC3
PB0
PB0
USART3 TX
CDC RX
PB1
PB1
USART3 RX
CDC TX
PB2
PB2
PB3
PB3
GND
GND
PE0
PE0
PE1
PE1
PE2
PE2
PE3
PE3
VB
US
VBUS
V
OFF
VOFF
DBG3
DBG3
PF6
SW0
DBG0
DBG0
UPDI
GND
GND
VT
G
VTG
PD7
PD7
AIN7
PD6
PD6
AIN6
PD5
PD5
AIN5
TCA0 WO5
PD4
PD4
AIN4
TCA0 WO4
PD3
PD3
AIN3
TCA0 WO3
PD2
PD2
AIN2
PD1
PD1
AIN1
PD0
PD0
AIN0
GND
GND
PC7
PC7
PC6
PC6
PC5
PC5
PC4
PC4
PF1
PF1
TOSC2
PF0
PF0
TOSC1
PB5
PB5
PB4
PB4
GND
GND
PF5
PF5
LED0
PF4
PF4
PF3
PF3
PF2
PF2
DEBUGGER
ATmega4809
Analog
Debug
I2C
SPI
UART
Peripheral
Port
PWM
Power
Ground
Shared pin
ATmega4809
Curiosity Nano
4.1.2
Using Pin Headers
The edge connector footprint on ATmega4809 Curiosity Nano has a staggered design where each hole is shifted 8
mil (~0.2 mm) off-center. The hole shift allows the use of regular 100 mil pin headers on the board without soldering.
ATmega4809 Curiosity Nano
Hardware User Guide
©
2020 Microchip Technology Inc.
User Guide
DS50002804B-page 25
