Atmel ATSAM3N-EK Hoja De Datos

11080C–ATARM–30-Mar-11

UART

The SAM3N-EK carries a TFT Transmissive LCD module with touch panel, TM020GDZ18. Its integrated 
driver IC is ILI9225B. The LCD display area is 2.0 inches diagonally measured, with a native resolution 
of 176x220 pixels.

The LCD module gets reset from GPIO PA29. The LCD chip select signal is connected to NPCS2. The 
SAM3N communicates with the LCD through the SPI bus.

LCD

The LCD backlight is made of four integrated white chip-LEDs arranged in parallel. These are driven by 
an AAT3193 charge pump, MN5. The AAT3193 is controlled by the SAM3N through a single PIO line 
interface (PC13); the 0 Ohm resistor R17 is mounted in series on this line, which permits to use it for 
other custom purposes. In that case, the pull-up resistor R64 maintains the charge pump permanently 
enabled by default.

On the anode drive line, a 0 Ohm resistor R21 is implemented in series for an optional current limitation.

PA10
PA9

+3V3

DGND

DGND

+3V3

+3V3

FGND

C39

100nF

C39

100nF

C40
100nF

C40
100nF

TP6

SMD

TP6

SMD

J4

J4

5

4

3

2

1

9

8

7

6

10

11

R36

100K

R36

100K

R39

0R

R39

0R

C38
100nF

C38
100nF

TP7

SMD

TP7

SMD

C41
100nF

C41
100nF

R40

0R

R40

0R

R41

0R

R41

0R

C42
100nF

C42
100nF

MN8

MAX3232CSE

MN8

MAX3232CSE

T1IN

11

T2IN

10

R1OUT

12

R2OUT

9

T1OUT

14

T2OUT

7

R1IN

13

R2IN

8

V+

2

C1+

1

C1-

3

C2+

4

C2-

5

V-

6

VCC

16

GND

15

R35

100K

R35

100K

SPI MOSI

SPI CLK

NPCS_LCD

LED_A

PA14
PA13

PA29

LED_K3

PA28

LED_K2

LED_K1

PA30

DGND

+3V3

DGND

R19

0R

R19

0R

R60

47K

R60

47K

MN6
TM020GDZ18

MN6
TM020GDZ18

1

ID
NCS

2

SCL

3

SDA

4

RS

5

NREST

6

GND

7

IOVDD

8

VDD

9

LEDA

10

LEDK1

11

LEDK2

12

LEDK3

13

Y+

14

Y-

15

X+

16

X-

17

NC

18

C31
100nF

C31
100nF

R18

47K

R18

47K

R21

0R

R21

0R

+

C30
10uF

+

C30
10uF