Atmel SAM3U-EK, User Manual

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Evaluation Kit Hardware
4-8 SAM3U-EK Development Board User Guide
6478B–ATARM–05-Oct-09
Figure 4-9. USART
4.3.8 LEDs
There are three LEDs on the SAM3U-EK board:
„ D2 and D3 green LEDs are user defined and controlled by the GPIO.
„ D4 red LED is a power LED indicating that the 3.3V rail is enabled. It can also be controlled by the
GPIO (by default, the GPIO is disabled and an on-board pull-up to 3.3V lights the LED).
Figure 4-10. LEDs
4.3.9 LCD, Backlight Control and Touch Panel
SAM3U-EK carries one TFT/Transmissive LCD module with touch screen, FTM280C12D, with inte-
grated driver IC HX8347. The LCD display size is 2.8 inches, with a native resolution of 240 x 320 pixels.
P A22
P A21
P A20
P A23
+3V 3
DG ND
DG ND
+3V 3 +3V 3
P A[31:0]
T XD1
RXD1
RT S 1
CT S 1
T P 20
S MD
T P 20
S MD
C 52
100nF C 52
100nF
C 50
100nF C 50
100nF
MN7
MAX3232C S E MN7
MAX3232C S E
T 1IN
11
T 2IN
10
R 1OUT
12
R 2OUT
9
T 1OUT
14
T 2OUT
7
R 1IN
13
R 2IN
8
V +
2
C 1+
1
C 1-
3
C 2+
4
C 2-
5
V -
6
V C C
16
G ND
15
C 51
100nF C 51
100nF
R 104 0R R 104 0R
C 49
100nF
C 49
100nF
R 105 0R R 105 0R
R 34
100K R 34
100K
C 53
100nF C 53
100nF
R 35
100K R 35
100K
J 4
MALE R IG HT ANG LE D
J 4
MALE R IG HT ANG LE D
5
4
3
2
1
9
8
7
6
10 11
T P 19
S MD
T P 19
S MD
P B 1
P B 2
P B 0
P B 5
P B 4
DG ND
+3V 3
P B [31:0]
US R_ L E D1#
US R_ L E D2#
POWE R_ L E D#
D2 green-led
0603
D2 green-led
0603
R 89 100K R 89 100K
D4 red-led
0603
D4 red-led
0603
R 87
220R R 87
220R
Q3
IR LML2502
Q3
IR LML2502
1
3 2
R 92
220R R 92
220R
R 85
220R R 85
220R
D3 green-led
0603
D3 green-led
0603