User`s guide
One of the most powerful ways of presenting data
and interacting with users is through colour displays
and touch panel inputs. This is a crucial element of any
multimedia device. EasyMx PRO
™
v7 features TFT colour
320x240 pixel display. It is a 3.2" display with LED
backlight, featuring HX8347D controller.
Each pixel is capable of showing 262.144 dierent
colours. It is connected to microcontroller using standard
8080 parallel 8-bit interface, with additional control
lines. Board features backlight driver which besides
standard mode can also be driven with PWM signal in
order to regulate brightness in range from 0 to 100%.
page 30
TFT display
320x240 pixels
TFT display is enabled using SW11.1–SW11.8
and SW12.2–SW12.6 DIP switches. Backlight
can be enabled in two dierent ways:
1. It can be turned on with full brightness
using SW12.7 switch.
2. Brightness level can be determined with PWM
signal from the microcontroller, allowing you
to write custom backlight controlling software.
This backlight mode is enabled when both
SW12.7 and SW12.8 switches are in ON
position.
2
15
12
35
11
36
3
4
5
6
14
7
8
9
13
43
33
10
37
38
39
40
44
45
46
34
1
47
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
41
42
LED-K
LED-A1
LED-A2
LED-A3
LED-A4
IM0
IM1
IM2
IM3
RESET
V
SYNC
HSYNC
DOTCLK
EN ABLE
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB8
DB9
DB10
DB11
DB12
DB13
DB 14
DB15
DB16
DB17
SDO
SDI
RD
WR/SCL
RS
CS
FMARK
VCC-IO
VCC
VCC-I
G
N
D
XR
YD
XL
YU
TFT1
TFT-RST
TFT-RS
T
F
T-CS#
TFT-PMRD
TFT-PMWR
TFT-BCK
VCC-3.3V
1 2 3 4 5
6
7 8
O
N
SW12
TFT-PMRD
TFT-PMWR
TFT-CS#
TFT-RST
TFT-RS
TFT-BCK
TFT-BPWM
VCC-5V
PC5
PA3
PG7
PH4
PH5
PH6
1 2 3 4 5
6
7 8
O
N
SW11
TFT-D0
TFT-D1
TFT-D2
TFT-D3
TFT-D4
TFT-D5
TFT-D6
TFT-D7
PJ0
PJ1
PJ2
PJ3
PJ4
PJ5
PJ6
PJ7
1 2 3 4 5
6
7 8
Q5
BC846
Q6
BC846
Q7
BC846
R69
12
D3
BAT43
TFT-BPWM
R60
4K7
VCC-5V
TFT-K
DATA BUS
Enabling TFT display
multimedia
EasyMx PRO
v7
Figure 16-1:
TFT display
connection
schematics