Microchip Technology ATmega4809 Xplained Pro User Manual page 10

Pin Number
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 any external power, 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.
Table 3-5. Xplained Pro Power Header
Pin Number
1
2
3
4
©
2018 Microchip Technology Inc.
Pin Name
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/ Slave select pin for Serial Peripheral Interface (SPI) and/or general
GPIO 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 Slave select for SPI. This pin should preferably not be connected to
anything else.
SPI_MOSI SPI master out slave in pin. Always connected, bus type.
SPI_MISO SPI master in slave 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.
Pin Name
VEXT_P5V0
GND
VCC_P5V0
VCC_P3V3
ATmega4809 Xplained Pro
Description
2
C interface. Always connected, bus type.
2
C interface. Always connected, bus type.
Description
External 5V input pin
Ground pin
Unregulated 5V pin (an output, derived from one of
the input sources)
Regulated 3.3V pin (an output, used as main power
supply for the kit)
User Guide
Xplained Pro
DS50002716A-page 10