WF0128-240240BD#0P19B-FC is a diameter 1.28-inch round IPS TFT-LCD module with KNOB with capacitive touch panel made of resolution of 240x240 pixels. This round TFT display with KNOB comprises an IPS TFT-LCD panel built with a GC9A01 driver IC that can communicate via SPI interface and is equipped with a capacitive touch panel that supports I2C interface.
Pin
Symbol
Function
Remark
1
TP_INT
INTERUPT SIGNAL
2
TP_SDA
IIC DATA
3
TP_SCL
IIC CLOCK
4
TP_RESET
TP RESET SIGNAL
5
TP_GND
Ground
6
TP_VDD3.3V
CTP POWER SUPPLY
7
VLED+
Backlit positive
8
VLED-
Backlit negative
9
GND
10
CS
Chip select signal
11
SCL
Serial clock
12
SDA
Serial data signal
13
RS
Register select signal
14
TE
TE signal
15
RESET
LCD RESET Signal
16
VCI3.3V
LCD Power supply
17
NC
No connection
18
Item
Dimension
Unit
Size
1.28
inch
Dot Matrix
240 x RGB x 240 (TFT)
dots
Module dimension
56.0 x 56.0 x 25.8
mm
Active area
32.40 x 32.40
Dot pitch
0.043 X 0.135
LCD type
TFT, Normally Black, Transmissive
Viewing Angle
80/80/80/80
TFT Interface
SPI
Backlight Type
LED ,Normally White
Driver IC
GC9A01
CTP Driver IC
CTS816 or equivalent
CTP FW Version
0X1
CTP Resolution
240*240
With /Without TP
With CTP
Surface
Glare
*Color tone slight changed by temperature and driving voltage.
Optical Characteristics
Min
Response time
Tr+ Tf
8=0°、Φ=0°
-
30
.ms
Note 3
Contrast ratio
CR
At optimized viewing angle
1000
Note 4
Color
Chromaticity
White
Wx
8=0°、Φ=0
0.254
0.304
0.354
Note
2,5,6
Wy
0.277
0.327
0.377
Viewing angle (Gray Scale Inversion Direction)
ΘR
CR≧10
80
Note 1
ΘL
ΦT
ΦB
Brightness
290
320
cd/m2
Center of display
Uniformity
(U)
75
%
Note 5
Electrical Characteristics
Operating conditions
Conditions
Standard Value
Typ
Max
Power Supply Voltage for Analog
VCI
Ta= +25℃
2.65
2.8
3.3
V
Supply CTP
TP_VDD3.3
Ta= +25°C
ICTP
3.0
4.5
mA
Input High Voltage for LCD
VIH
0.8Iovcc
Iovcc
Input Low Voltage for LCD
VIL
Vss
0.2 Iovcc
Output High Voltage for LCD
VOH
Output Low Voltage for LCD
VOL
LED driving conditions
Parameter
LED current
40
LED voltage
3.2
3.4
LED Life Time
20,000
Hr
Note 2,3,4