Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet

Product codes
ATSAM4E-XPRO
Page of 24
 
Atmel SAM4E Xplained Pro [USER GUIDE]
42216A-MCU-01/2014
10
Pin number
Name
RGB interface
description
MCU interface
description
42
TWI SDA
I
2
C data line (maXTouch
®
)
43
TWI SCL
I
2
C clock line (maXTouch)
44
IRQ1
maXTouch interrupt line
45
IRQ2
Interrupt line for other I
2
C devices
46
PWM
Backlight control
47
RESET
Reset for both display and maxTouch
48
VCC
3.3V power supply for extension board
49
VCC
3.3V power supply for extension board
50
GND
Ground
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
Table 3-6. Power header PWR
Pin number PWR header
Pin name
Description
1
VEXT_P5V0
External 5V input
2
GND
Ground
3
VCC_P5V0
Unregulated 5V (output, derived
from one of the input sources)
4
VCC_P3V3
Regulated 3.3V (output, used as
main power for the kit)
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.