ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 18

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6478E–ATARM–30-Mar-11
Evaluation Kit Hardware
Figure 4-11. LCD Block
4-10
C 38
C 38
10uF
10uF
P B [31:0]
+3V 3
DG ND
NR S T
C 39
C 39
100nF
100nF
LCD backlight is made of 4 white chip LEDs in parallel, driven by an AAT3194 charge pump, MN4. The
AAT3194 is controlled by the SAM3U4E through a single line Simple Serial Control (S2Cwire) interface,
which permits to enable, disable, and set the LED drive current (LED brightness control) from a 32-level
logarithmic scale. Four 0-Ohm resistors R93/R94/R95/R96 are implemented for optional current limita-
tion (replace 0 Ohm with the required resistor value).
The LCD module integrates a 4-wire touch screen panel controlled by MN5, ADS7843, which is a slave
device on the SAM3U4E SPI bus.
The ADS7843 touch ADC auxiliary inputs IN3/IN4 are connected to test points for optional function
extension.
LE D_A1
LE D_A2
LE D_A3
LE D_A4
P C 16
P B 8
P B 23
P B 19
P B 9
P B 10
P B 11
P B 12
P B 13
P B 14
P B 15
P B 16
P B 25
P B 26
P B 27
P B 28
P B 29
P B 30
P B 31
P B 6
X_R IG HT
Y _UP
X_LE F T
Y _DOW N
R 93
R 93
R 94
R 94
R 95
R 95
R 96
R 96
J P 14
J P 14
J P
J P
0R
0R
0R
0R
0R
0R
0R
0R
C S #
DG ND
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
1
2
3
4
5
6
7
8
9
J 2
J 2
F H26-39S -0.3S HW
F H26-39S -0.3S HW
G ND1
C S
R S
W R
R D
DB 0
DB 1
DB 2
DB 3
DB 4
DB 5
DB 6
DB 7
DB 8
DB 9
DB 10
DB 11
DB 12
DB 13
DB 14
DB 15
NC 1
NC 2
R E S E T
G ND2
X+
Y +
X-
Y -
G ND3
V DD1
V DD2
A1
A2
A3
A4
NC 3
NC 4
K
s helled1
s helled2
+3V 3
X_R IG HT
Y _UP
X_LE F T
Y _DOW N
P C 19
R 20
R 20
0R
0R
B 7
B 7
B N03K 314S 300R
B N03K 314S 300R
DG ND
+3V 3
R 19
R 19
47K
47K
NOT POPUL AT E D
D5
D5
P AC DN044Y 5R
P AC DN044Y 5R
T V S , S OT 23-5
T V S , S OT 23-5
V LE D
DG ND
C 34
C 34
1uF
1uF
C 36
C 36
4.7uF
4.7uF
SAM3U-EK Evaluation Kit User Guide
10
11
4
3
9
MN4
MN4
AAT 3194IT P
AAT 3194IT P
C 1+
C 1-
E N/S E T
IN
G ND
OUT
C 2+
C 2-
D1
D2
D3
D4
LE D_A1
LE D_A2
LE D_A3
LE D_A4
1
12
2
8
7
6
5
LE D_A1
LE D_A2
LE D_A3
LE D_A4
C 35
C 35
1uF
1uF
T P 13
T P 13
S MD
S MD
T P 14
T P 14
S MD
S MD
T P 15
T P 15
S MD
S MD
T P 16
T P 16
S MD
S MD
DG ND
C 37
C 37
1uF
1uF