P A G E 28
E a s y M x
P R O
v 7 a
U s e r M a n u a l
In order to use PWM back-light both
SW11.3
and SW11.4
switches must be enabled at the
same time.
One of the most powerful ways of presenting
data and interacting with users is through
color displays and touch panel inputs. This is
a crucial element of any multimedia device.
EasyMx v7a features EasyTFT board carrying
320x240 pixel 2.83" color TFT display with
LED back-light and
HX8347D
controller.
Each pixel is capable of showing 262.144
different colors. TFT display is connected
to microcontroller PORTE using standard
8080 parallel 8-bit interface, with additional
control lines. Board features back-light
driver which besides standard mode can
also be driven with PWM signal in order to
regulate brightness in 0 to 100% range.
page 28
TFT display
320x240 pixels
TFT display is enabled using
SW11.3 and SW11.4
DIP
switches. Back-light can be enabled in two different
ways:
1. It can be
turned on with full brightness
using
SW11.3
switch.
2. Brightness level can be determined
with PWM signal
from the microcontroller, allowing you to write custom
back-light controlling software. This back-light mode
is enabled when both
SW11.3 and SW11.4
switches
are in ON position.
VCC-5V
BCK_LIGHT
BCK_PWM
PE9
G
LC
D
_V
EE
VCC-5V
VE
E
PE
0
PE
1
PE
2
PE
3
PE
4
PE
5
PE
6
PE
7
PE
8
PE
10
PE
11
PE
12
PE
13
BC
K_
LI
G
H
T
BP
W
M
PE
15
PM
R
D
PM
W
R
G
N
D
VC
C
N
C
R
S
N
C
D
1
D
2
D
3
D
4
D
5
D
6
D
7
C
S
D
0
R
ST
N
C
+
5V
B
PW
M
1
20
XR
YU
XL
YD
21
24
Q5
BC846
R62
20
R66
4K7
R64
1K
BCK_PWM
BP
W
M
VCC-3.3V
1
2
3
4
5
6
7
8
O
N
SW13
D
AT
A BUS
CN32
GLCD-TFT SOCKET
Driving Display Back-light
IMPORTANT:
MUL
TIMEDIA
