Xplained Pro Power Header - Atmel SAM4N Xplained Pro User Manual

Pin number
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 SAM4N Xplained Pro kit. The kit will
automatically detect and switch to the external power if supplied. The power header can also be used as supply
for external peripherals or extension boards. Care must be taken not to exceed the total current limitation of the
on-board regulator for the 3.3V regulated output. To locate the current measurement header, please refer to
Figure 1-1, "SAM4N Xplained Pro evaluation kit overview"
Table 3-5. Power header PWR
Pin number PWR header
1
2
3
4
Note If the board is powered from a battery source it is recommended to use the PWR header. If there
is a power source connected to EDBG USB, the EDBG is activated and it will consume more
power.
Name
GND
ADC(+)
ADC(-)
GPIO1
GPIO2
PWM(+)
PWM(-)
IRQ/GPIO
SPI_SS_B/GPIO
TWI_SDA
TWI_SCL
USART_RX
USART_TX
SPI_SS_A
SPI_MOSI
SPI_MISO
SPI_SCK
GND
VCC
Pin name
VEXT_P5V0
GND
VCC_P5V0
VCC_P3V3
Description
Ground
Analog to digital converter , alternatively positive part of
differential ADC
Analog to digital converter , alternatively negative part of
differential ADC
General purpose IO
General purpose IO
Pulse width modulation , alternatively positive part of
differential PWM
Pulse width modulation , alternatively positive part of
differential PWM
Interrupt request line and/or general purpose IO.
Slave select for SPI and/or general purpose IO.
Data line for two wire interface. Always implemented, bus
type.
Clock line for two wire interface. Always implemented, bus
type.
Receiver line of Universal Synchronous and Asynchronous
serial Receiver and Transmitter
Transmitter line of Universal Synchronous and
Asynchronous serial Receiver and Transmitter
Slave select for SPI. Should be unique if possible.
Master out slave in line of Serial peripheral interface. Always
implemented, bus type
Master in slave out line of Serial peripheral interface. Always
implemented, bus type
Clock for Serial peripheral interface. Always implemented,
bus type
Ground
Power for extension board
Description
External 5V input
Ground
Unregulated 5V (output, derived
from one of the input sources)
Regulated 3.3V (output, used as
main power for the kit)
Atmel SAM4N Xplained Pro [USER GUIDE] 8
42104A-MCU-06/2013