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.
QTouch
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-Wire on DM
TWD0
K2
KEY
K3
KEY
C21
100n
K4
KEY
TWCK0
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
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
MN6
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
VD
D
9
M
OD
E
(VS
S)
11
VS
S
8
KEY6
16
KEY5
17
Th
e
rma
l
21
KEY 1
KEY 2
K1
KEY
R75
10k
3V3_LCD
ZB_IRQ0
3V3_LC D
ON E_WIR E
R 45
4.7k
MN 2
D S2433S
N C 1
1
N C 2
2
D ATA
3
GN D
4
N C3
5
N C4
6
N C5
7
N C6
8