Power Header - Atmel Xplained Pro SAM4L User Manual

Description
Common terminal 1
Segment 0
Segment 2
Segment 4
Segment 6
Segment 8
Segment 10
Segment 12
Segment 14
Segment 16
Segment 18
Segment 20
Segment 22
Segment 24
Segment 26
Segment 28
Segment 30
Segment 32
Segment 34
Segment 36
Segment 38
Not Connected
Backlight Anode
Backlight Control
Ground
3.4.3

Power header

The power header can be used to connect external power to the SAM4L Xplained Pro kit. The kit will automat-
ically detect and switch to the external power if supplied. The power header can also be used as supply for ex-
ternal 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
ure 1.1, "SAM4L Xplained Pro evaluation kit overview."
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.
Function Pin Pin
COM1 3 4
SEG0 5 6
SEG2 7 8
SEG4 9 10
SEG6 11 12
SEG8 13 14
SEG10 15 16
SEG12 17 18
SEG14 19 20
SEG16 21 22
SEG18 23 24
SEG20 25 26
SEG22 27 28
SEG24 29 30
SEG26 31 32
SEG28 33 34
SEG30 35 36
SEG32 37 38
SEG34 39 40
SEG36 41 42
SEG38 43 44
NC 45 46
Backlight V+ 47 48
Backlight 49 50
CTRL
GND 51
Pin name
VEXT_P5V0
GND
VCC_P5V0
VCC_P3V3
Atmel SAM4L Xplained Pro [USER GUIDE]
Function Description
COM0 Common terminal 0
SEG1 Segment 1
SEG3 Segment 3
SEG5 Segment 5
SEG7 Segment 7
SEG9 Segment 9
SEG11 Segment 11
SEG13 Segment 13
SEG15 Segment 15
SEG17 Segment 17
SEG19 Segment 19
SEG21 Segment 21
SEG23 Segment 23
SEG25 Segment 25
SEG27 Segment 27
SEG29 Segment 29
SEG31 Segment 31
SEG33 Segment 33
SEG35 Segment 35
SEG37 Segment 37
SEG39 Segment 39
NC Not Connected
Backlight V- Backlight Cathode
ID Xplained Pro ID line
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)
Fig-
10
42074A-MCU-02/13