Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet

11186A–ATARM–29-Nov-12

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.

QTouch

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.

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