Atmel Evaluation Kit AT91SAM9X35-EK AT91SAM9X35-EK Data Sheet
Product codes
AT91SAM9X35-EK
Evaluation Kit Hardware
4-78
Evaluation Kit (EK) User Guide
11115A–ATARM–27-Jul-11
4.4
Optional Display Module (DM) Board Hardware
4.4.1
DM Board Overview
The optional DM board carries a 5.0" TFT LCD module with touch screen. The DM board also carries
four QTouch pads.
four QTouch pads.
Figure 4-54. DM Board Layout
4.4.2
Equipment List
The list of the DM board components follows:
One 5.0" TFT LCD module
LCD Back light driver
3.3V regulator
QTouch device
1-Wire device
4.4.3
Function Blocks
4.4.3.1
3.3V Regulator
The DM Board features its own LDO for local power regulation. It accepts DC 5V power from a 500 mA
high-side power switch on the EK and outputs a regulated +3.3 V to most other circuits on the board.
high-side power switch on the EK and outputs a regulated +3.3 V to most other circuits on the board.
Figure 4-55. DM Board Power Supply
C12
10u
10u
C10
10u
10u
3V3_LCD
C11
100n
100n
C15
2.2u
2.2u
MN3
SPX3819
VIN
1
GND
2
EN
3
BY P
4
VOUT
5
C13
100n
100n
5V_INTER
SELCONFIG
500mA capability