Datasheet

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 PRO
™
v7 for STM32 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 dierent 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 30
TFT display
320x240 pixels
TFT display is enabled using SW13.3–SW13.4
DIP switches. Back-light can be enabled in two
dierent ways:
1. It can be turned on with full brightness
using SW13.3 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 SW13.3 and SW13.4 switches
are in ON position.
VCC-5V
BCK_LIGHT
BCK_PWM PE9
VCC-5V
PE0
PE1
PE2
PE3 PE4 PE5 PE6 PE7 PE8
PE10 PE11
PE12
BCK_LIGHT
BPWM
PE15
PMRD
PMWR
GND
VCC
NC
RS
NC
D1 D2 D3 D4 D5 D6 D7
CS
D0
RST
NC
+5V
BPWM
1 20
XR
YU
XL
YD
21 24
Q5
BC846
R62
20
R66
4K7
R64
1K
BCK_PWM
BPWM
VCC-3.3V
1 2 3 4 5 6 7 8
O
N
SW13
DATA BUS
CN32
GLCD-TFT SOCKET
Driving Display Back-light
multimedia
EasyMx PRO
v7
Figure 16-1:
TFT display connection
schematic
In order to use PWM back-light both SW13.3
and SW13.4 switches must be enabled at
the same time.
IMPORTANT:
Figure 16-2: Turn
on switches SW13.3
and SW13.4 to
enable back-light