Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
6-2
SAM9N12/CN11-EK User Guide
11186A–ATARM–29-Nov-12
6.3
Function Blocks
6.3.1
3.3V Regulator
The SAM9N12/CN11-DM board features its own LDO for local power regulation. It accepts DC 5V power
from a 500 mA power switch on the EK and outputs a regulated +3.3V to most other circuits on the
board.
from a 500 mA power switch on the EK and outputs a regulated +3.3V to most other circuits on the
board.
Figure 6-2.
DM Board Power Supply
6.3.2
TFT LCD with Touch Panel
The SAM9N12/CN11-DM board features an LCD controller. The 4.3" 480x272 LCD provides the DM
with a low power LCD display feature, back light unit and a touch panel, similar to that used on commer-
cial PDAs.
with a low power LCD display feature, back light unit and a touch panel, similar to that used on commer-
cial PDAs.
Graphics and text can be displayed on the dot matrix panel with up to 16 million colors by supplying 24-
bit data signals (8 bit
bit data signals (8 bit
x
RGB by default). This allows the user to develop graphical user interfaces for a
wide variety of end applications.
Warning: Never connect/disconnect the LCD display from the board while the power supply is on. Doing
so may damage both units.
so may damage both units.
C 12
10u
10u
C 10
10u
10u
3V3_LC D
C 11
100n
100n
C 15
2.2u
2.2u
MN 3
SPX3819
VIN
1
GN D
2
EN
3
BY P
4
VOU T
5
C 13
100n
100n
5V_IN TER
SELCON F IG
500mA capability