Xplained Pro Power Header - Atmel SAM4E Xplained Pro User Manual

Pin number
42
43
44
45
46
47
48
49
50
3.4.3

Xplained Pro Power Header

The power header can be used to connect external power to the SAM4E 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, refer to
Figure 1-1, "SAM4E Xplained Pro Evaluation Kit Overview" on page 4
Table 3-6. 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
TWI SDA
TWI SCL
IRQ1
IRQ2
PWM
RESET
VCC
VCC
GND
Pin name
VEXT_P5V0
GND
VCC_P5V0
VCC_P3V3
RGB interface
description
2
I C data line (maXTouch
2
I C clock line (maXTouch)
maXTouch interrupt line
Interrupt line for other I
Backlight control
Reset for both display and maxTouch
3.3V power supply for extension board
3.3V power supply for extension board
Ground
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 SAM4E Xplained Pro [USER GUIDE]
MCU interface
description
®
)
2
C devices
10
42216A-MCU-01/2014