Resistive Touch Panel TFT LCD Modules 3.9 - RFS390B-ALW-DNS
Resistive Touch Panel TFT LCD Modules 3.9 - RFS390B-ALW-DNS
  • General Specs
  • Interface Pin Function
  • Contour Drawing
  • Absolute Maximum Ratings
  • Electrical Characteristics
Item Dimension Unit
Size (Diagonal) 3.9 inch
Dot Matrix / Resolution 480 × 128 × RGB (TFT) dots
Module Dimension 105.5(W) × 37.0(H) × 4.58(D) mm
View Area 97.04 × 27.34 mm
Active Area 95.04 × 25.34 mm
Dot / Pixel Pitch 0.066(W) × 0.198(H) mm
LCD Type TFT, Normally White, Transmissive
View Direction 6 o’clock
Gray Scale Inversion Direction 12 o’clock
Aspect Ratio Bar Type
Backlight Type LED, Normally White
Control-Board No
TFT Driver IC HX8278-A or Equal
Interface RGB-24BIT (SYNC mode)
Touch Panel Resistive Touch Screen, RTP
Surface Anti-Glare
Brightness 350 cd/㎡
Frame Through Hole No
Operating Temperature -20~+70 °C
Storage Temperature -30~+80 °C
TFT Series Bar Type TFT LCD

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 XR Right electrode
38 YD Bottom electrode
39 XL Left electrode
40 YU Top electrode

Resistive Touch Panel TFT LCD Modules 3.9 - RFS390B-ALW-DNS

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

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

LED driving conditions

Item Symbol Min Typ Max Unit
Forward Current ILED 40 mA
Forward Voltage VLED+ 14 15 17 V
Backlight life time 50000 hr
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