User manual

6-4 SAM9N12/CN11-EK User Guide
11186A–ATARM–29-Nov-12
6.3.4 QTouch
The SAM9N12/CN11-DM board carries a QTouch device piloted through a TWI interface. It manages
four capacitive touch buttons directly printed on the PCB.
There are dual footprints for the QTouch device, and SOIC is the default mounted one.
Figure 6-5. QTou
ch
6.3.5 1-Wire
The DM board also uses 1-Wire device as “soft label” to store the information such as chip type, manu-
facture name, production date, etc.
Figure 6-6. 1-Wir
e on DM
TWD0
K2KEY
K3
KEY
C21
100n
K4
KEY
TWCK0
MN 5
QT107 0_SO I C
VD D
1
MODE(VSS)
2
SD A
3
RESET
4
CHANGE
5
SC L
6
KEY6
7
KEY5
8
KEY4
9
KEY3
10
KEY2
11
KEY1
12
KEY0
13
VSS
14
RESET#
R64 4.7k DNP
R66 4.7k
R65 4.7k
R68 4.7k
R67
4. 7k
3V3_LCD
R69 4.7k
R71 4.7k DNP
R70
4.7k
DNP
R73
4.7k
DNP
R72 4.7k DNP
R74 4.7k DNP
RESET#
TWD0
3V3_LCD
ZB_IRQ0
C22 100n
KEY 4
TWCK0
KEY 3
MN 6
QT10 70
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
KEY 1
KEY 2
K1
KEY
R75
10k
3V3_LCD
ZB_IRQ0
3V3_LCD
ONE_WIRE
R45
4.7k
MN2
DS2433S
NC1
1
NC2
2
DATA
3
GND
4
NC3
5
NC4
6
NC5
7
NC6
8