Connectors - Microchip Technology ATmega4809 Xplained Pro User Manual

4.2

Connectors

4.2.1 Xplained Pro Standard Extension Headers
The Xplained Pro extension headers EXT1, EXT2, and EXT3 offer access to the I/O of the microcontroller
to expand the board, for example, by connecting extensions to the board. These headers are based on
the standard Xplained Pro extension header specification and the connections are shown in the table
below. The headers have a pitch of 2.54 mm.
Table 4-1. Extension Header EXT1
EXT1 Pin
1 [ID]
2 [GND]
3 [ADC(+)]
4 [ADC(-)]
5 [GPIO1]
6 [GPIO2]
7 [PWM(+)]
8 [PWM(-)]
9 [IRQ/GPIO]
10 [SPI_SS_B/GPIO] PC7
11 [TWI_SDA]
12 [TWI_SCL]
13 [USART_RX]
14 [USART_TX]
15 [SPI_SS_A]
16 [SPI_MOSI]
17 [SPI_MISO]
18 [SPI_SCK]
19 [GND]
20 [VCC]
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2018 Microchip Technology Inc.
ATmega4 Function
809 Pin
- -
- -
PD2 ADC0 AIN2
PD3 ADC0 AIN3
PA2 GPIO (USART0 XCK)
PA3 GPIO (USART0 XDIR)
PC4 TCA0 WO4
PC5 TCA0 WO5
PC6 GPIO
GPIO
PC2 TWI0 SDA
PC3 TWI0 SCL
PA1 USART0 RxD
PA0 USART0 TxD
PA7 SPI0 SS
PA4 SPI0 MOSI
PA5 SPI0 MISO
PA6 SPI0 SCK
- -
- -
ATmega4809 Xplained Pro
Shared Functionality
Communication line to the ID
chip on an extension board
Ground
-
-
-
-
-
-
-
-
EXT2, EXT3, mikroBUS,
ECC508,
EXT2, EXT3, mikroBUS,
ECC508,
-
-
-
EXT2, EXT3, mikroBUS,
DGI
EXT2, EXT3, mikroBUS,
DGI
EXT2, EXT3, mikroBUS,
DGI
Ground
Power for extension board
User Guide
Hardware User Guide
EDBG DGI
EDBG DGI
EDBG
EDBG
EDBG
DS50002716A-page 13