3.9″ 480×128 Top View Direction Stretched PCAP TFT LCD Display

Model No. WF39CTIASDNG0

Size : 3.9″
Resolution : 480×128 dots
View Direction : 12H
Interface : RGB
Driver IC: HX8278-A
Control-Board : No
Brightness(cd/m²) : 400
Frame Through Hole : No
Touch Screen : Projected capacitive touch panel (PCAP)
Detect Point : 5 Fingers

Description

WF39CTIASDNG0 is a 3.9 inch Top View Bar TFT module with Projected Capacitive Touch Panel (PCAP) which featured with 480×128 dots resolution. WF39CTIASDNG0 is built in with Driver IC HX8278-A, it communicates via 24-bit RGB interface, 3.3V (typical) power supply voltage, supports SYNC mode or DE mode, default SYNC mode. Its brightness is 400 nits; contrast ratio of 500, view direction 12 o’clock (top view direction), gray scale inversion direction 6 o’clock, and glare surface glass. It can be operating at temperatures from -20℃ to +70℃, its storage temperatures range from -30℃ to +80℃.

We also offer Resistive Touch Panels (RTP) and High Brightness version optional for WF39C model. WF39C is top-view direction TFT module, if customers require bottom-view (6 o’clock), please choose WF39B series Bar TFT model.

Drawing

Interface

LCM PIN Definition

No.	Symbol	Description
1	VLED-	Backlight LED Cathode
2	VLED+	Backlight LED Anode.
3	GND	System Ground
4	VCC	Power supply for logic operation
5~12	R0~R7	Data bus
13~20	G0~G7	Data bus
21~28	B0~B7	Data bus
29	GND	System Ground
30	DCLK	Pixel clock signal
31	DISP	Display on/off control
32	HSYNC	Horizontal Sync signal
33	VSYNC	Vrtical Sync signal
34	NC	No connection (Option DE)
35	NC	No connection
36	GND	System Ground
37	NC	No connection
38	NC	No connection
39	NC	No connection
40	NC	No connection

PCAP PIN Definition

Pin	Symbol	Function
1	VSS	Ground for analog circuit
2	VDDT	Power Supply : +3.0V
3	SCL	I2C clock input.
4	NC	No connect
5	SDA	I2C data input and output
6	NC	No connect
7	/RST	External Reset, Low is active
8	NC	No connect
9	/INT	External interrupt to the host
10	VSS	Ground for analog circuit

General Specifications

Item	Dimension	Unit
Size	3.9	inch
Dot Matrix	480 ×128 × RGB (TFT)	dots
Module dimension	105.5(W) × 37.0(H) × 5.2(D)	mm
Active area	95.04 × 25.34	mm
Dot pitch	0.066(W) × 0.198(H)	mm
LCD type	TFT, Normally White, Transmissive
View Direction	12 o’clock
Gray Scale Inversion Direction	6 o’clock
Aspect Ratio	Bar Type
Driver IC	HX8278-A or equivalent
TFT Interface	RGB-24BIT
Backlight Type	LED, Normally White
CTP IC	CYTM568 or equivalent
CTP FW Version	0x0001
Touch Screen	Projected capacitive touch panel (PCAP)
Surface	Glare

Absolute Maximum Ratings

Item	Symbol	Min	Typ	Max	Unit
Operating Temperature	TOP	-20	－	+70	℃
Storage Temperature	TST	-30	－	+80	℃

Electrical Characteristics

Operating conditions

Item	Symbol	Condition	Min	Typ	Max	Unit
Supply Voltage For LCM	VCC	–	3.0	3.3	3.6	V
Supply Current For LCM	ICC	–	–	15	25	mA
Supply Voltage For Touch Logic	VDDT	–	2.8		3.5	mA

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