Atmel SAMA5D3 EK Series User Manual

118
SAMA5D3x-EK User Guide [USER GUIDE]
11180B–ATARM–29-Oct-13
6.1.4 Backlight
The backlight voltage is generated from a CP2122ST/CP2123ST boost converter. It is powered directly by the 5V DC
from the EK board. The backlight level is controlled by a PWM signal generated from the SAMA5D3 series processor.
Figure 6-4. DM Back Light Control
6.1.5 QTouch
The 5-0_WVGA_R_AEA-DM board carries a QTouch device driven through a TWI interface. It manages four capacitive
touch buttons directly printed on the PCB.
There is dual footprint for the QTouch device. SOIC is the default mounted one.
Figure 6-5. DM QTouch
6.1.6 1-Wire
The 5-0_WVGA_R_AEA-DM board also uses a 1-wire device as a “soft label” to store the information such as chip type,
manufacture name, production date, etc.
Figure 6-6. DM 1-Wire
2*20mA, 24.5V
2 x 7 LEDs Back Light
300mV
50V
Am04/V5.42Am712/V5
60V/1A
880mA
10V
VLED-
VLED+
LCDPWM
5V_INTER
D1
RB160M-60
C7
10u
R41
7R5
L1
22uH
R40
10k
MN1
CP2122ST
SW
1
GND
2
FB
3
SHDN#
4
VIN
5
C9
2.2u
CHANGE#
TWD0
KEY4
KEY3
KEY2
KEY1
TWCK0
RESET#
TWD0
RESET#
CHANGE#
TWCK0
3V3_LCD
3V3_LCD
3V3_LCD
C14
100n
MN5
QT1070_SOIC
VDD
1
MODE(VSS)
2
SDA
3
RESET
4
CHANGE
5
SCL
6
KEY6
7
KEY5
8
KEY4
9
KEY3
10
KEY2
11
KEY1
12
KEY0
13
VSS
14
C16 100n
R57
4.7k
DNP
R62 4.7k DNP
K4
KEY
R59 4.7k DNP
MN4
QT1070
DNP
NC4
7
NC3
10
NC2
18
NC1
19
NC0
20
SDA
12
CHANGE
14
RESET
13
NC5
6
SCL
15
KEY4
1
KEY3
2
KEY2
3
KEY1
4
KEY0
5
VDD
9
MODE(VSS)
11
VSS
8
KEY6
16
KEY5
17
Thermal
21
R61 4.7k DNP
K2KEY
R56
4.7k
R58
4.7k
DNP
R68 4.7k
R65 4.7k
R66 4.7k
R67 4.7k
R60 4.7k DNP
R63
10k
K3
KEY
K1
KEY
ONE_WIRE
3V3_LCD
MN2
DS2433S
NC1
1
NC2
2
DATA
3
GND
4
NC3
5
NC4
6
NC5
7
NC6
8
R45
4.7k

Atmel SAMA5D3 EK Series Specifications

General

Brand	Atmel
Model	SAMA5D3 EK Series
Category	Motherboard
Language	English