Atmel SAM4L Xplained Pro Evaluation Kit Atmel ATSAM4L-XPRO ATSAM4L-XPRO Data Sheet
Product codes
ATSAM4L-XPRO
Atmel SAM4L Xplained Pro [USER GUIDE]
42074B-MCU-05/2013
14
Pin on EXT5
SAM4L pin
Function
Shared functionality
25
PA20
SEG20
EXT3 and EXT4
26
PB07
SEG21
27
PB06
SEG22
28
PA08
SEG23
EXT3
29
PC24
SEG24
30
PC25
SEG25
EXT1
31
PC26
SEG26
EXT2 and EXT3
32
PC27
SEG27
EXT2 and EXT3
33
PC28
SEG28
34
PC29
SEG29
35
PC30
SEG30
EXT1 and EXT2
36
PC31
SEG31
37
PB12
SEG32
EXT1
38
PB13
SEG33
EXT1
39
PA21
SEG34
EXT1 and EXT2
40
PA22
SEG35
EXT1 and EXT2
41
PB14
SEG36
EXT2, EXT3 and EXT4
42
PB15
SEG37
EXT2, EXT3 and EXT4
43
PA23
SEG38
EXT1
44
PA24
SEG39
EXT1
45
-
Not Connected
46
-
Not Connected
47
-
VCC_P3V3
48
-
GND
49
PC05
Backlight
EXT2
50
-
ID
51
-
GND
4.2
Peripherals
4.2.1
QTouch button
The SAM4L Xplained Pro kit has one QTouch button and the connection to the SAM4L is shown in the table
below. The QTouch sensor, a copper fill, is located on the second layer (GND) of the board. The sensor is
shielded by the third and the bottome layer (VCC and signal layer respectively) and therefore the sensor is not
affected by any touches from the back side of the board.
Table 4-6. QTouch button connections.
Pin on SAM4L
Function
PC13
CATB_SENSE15
PC14
CATB_DIS
4.2.2
Crystals
The SAM4L Xplained Pro kit contains two crystals that can be used as clock sources for the SAM4L device.
Each crystal has a cut-strap next to it that can be used to measure the oscillator safety factor. This is done by
cutting the strap and adding a resistor across the strap. More information about oscillator allowance and safety
1
.
1