Xplained Pro Power Header - Microchip Technology ATmega4809 Xplained Pro Manual

Info: Not all pins are always connected to all extension headers.
The extension headers can be used to connect a variety of Xplained Pro extensions to Xplained Pro MCU boards or
to access the pins of the target microcontroller on the Xplained Pro boards.
Table 3-4. Xplained Pro Standard Extension Header
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
3.4.2

Xplained Pro Power Header

The power header can be used to connect external power to the ATmega4809 Xplained Pro kit. The kit automatically
detects and switches to an external power source, if supplied. The power header can also be used to supply power to
external peripherals or extension boards. Ensure that the total current does not exceed the recommended current
limit of the on-board regulator when using the 3.3V pin.
©
2020 Microchip Technology Inc.
Pin Name
ID Pin to communicate with the ID chip on an extension board.
GND Ground.
ADC(+) Analog-to-Digital Converter; alternatively, a pin for the positive terminal of a
differential ADC.
ADC(-) Analog-to-Digital Converter; alternatively, a pin for the negative terminal of a
differential ADC.
GPIO1 General purpose I/O pin.
GPIO2 General purpose I/O pin.
PWM(+) Pulse-Width Modulation; alternatively, a pin for the positive part of a
differential PWM.
PWM(-) Pulse-Width Modulation; alternatively, a pin for the negative part of a
differential PWM.
IRQ/GPIO Interrupt request pin and/or general purpose I/O pin.
SPI_SS_B/GPIO Client select pin for Serial Peripheral Interface (SPI) and/or general purpose
I/O pin.
2
I C_SDA Data pin for I
2
I C_SCL Clock pin for I
UART_RX Receiver pin of target device UART.
UART_TX Transmitter pin of target device UART.
SPI_SS_A Client select for SPI. This pin should preferably not be connected to
anything else.
SPI_MOSI SPI host out, client in pin. Always connected, bus type.
SPI_MISO SPI host in, client out pin. Always connected, bus type.
SPI_SCK SPI clock pin. Always connected, bus type.
GND Ground pin for extension boards.
VCC Power pin for extension boards.
ATmega4809 Xplained Pro
Description
2
C interface. Always connected, bus type.
2
C interface. Always connected, bus type.
User Guide
Xplained Pro
DS50002716C-page 9