3.9 inch Bar Type PCAP TFT 480x128 - RFS390Q-EIW-DBG
3.9 inch Bar Type PCAP TFT 480x128 - RFS390Q-EIW-DBG

3.9 inch Bar Type PCAP TFT 480x128

Model No. RFS390Q-EIW-DBG

RFS390Q-EIW-DBG is one of the models in our Q series--- 3.9-inch bar typeTFT-LCD display module with controller board and PCAP touch. The resolution of this module is 480x128 pixels. PCAP touch panel adopts IC CYTMA568 supporting 5-point touch. The Q series mainly uses IC SSD1963. TFT modules of this series are all characterized by 36-pin MCU 8080 8/16-bit pin define, and the 8/16-bit 6800 pin define interface can be selected through Jump. Compared to the P series, functions of Q series are simple and pricing is relatively lower.

The brightness is 400 cd /m2 with contrast ratio 500:1. LCM voltage ranges from 3V-3.3V, typical value is 3.1V. Operating temperature covers from -20~+70℃, storage temperature range is from -30~+80℃.

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  • 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 122.0 × 44.0 × 9.8(max) mm
View Area 96.04 × 26.34 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 12 o’clock
Gray Scale Inversion Direction 6 o’clock
Aspect Ratio Bar Type
Backlight Type LED, Normally White
Control-Board Yes
TFT Driver IC SSD1963
Interface Digital 8080 family MPU 8bit/16bit
PCAP FW Version TBD
PCAP IC CYTMA568 Or Equal
Detect Points 5 Points
Color arrangement RGB-STRIPE
Touch Panel Projected Capacitive Touch Panel, PCAP
Surface Glare
Brightness 400 cd/㎡
Frame Through Hole No
Operating Temperature -20~+70 °C
Storage Temperature -30~+80 °C
TFT Series Bar Type TFT LCD, TFT Panel with Controller Board (Q series)

LCM PIN Definition

Pin Symbol Function
1 GND System round pin of the IC. Connect to system ground.
2 VDD Power Supply : +3.3V
3 BL_E Backlight control signal , H: On \ L: Off
4 D/C Data/Command select
5 WR Write strobe signal
6 RD Read strobe signal
7 DB0 Data bus
8 DB1 Data bus
9 DB2 Data bus
10 DB3 Data bus
11 DB4 Data bus
12 DB5 Data bus
13 DB6 Data bus
14 DB7 Data bus
15 DB8 Data bus (When select 8bits mode, this pin is NC)
16 DB9 Data bus (When select 8bits mode, this pin is NC)
17 DB10 Data bus (When select 8bits mode, this pin is NC)
18 DB11 Data bus (When select 8bits mode, this pin is NC)
19 DB12 Data bus (When select 8bits mode, this pin is NC)
20 DB13 Data bus (When select 8bits mode, this pin is NC)
21 DB14 Data bus (When select 8bits mode, this pin is NC)
22 DB15 Data bus (When select 8bits mode, this pin is NC)
23 NC No connect
24 NC No connect
25 CS Chip select
26 RESET Hardware reset
27 DISP_ON Display on/off control
28 NC No connect
29 NC No connect
30 NC No connect
31 NC No connect
32 NC No connect
33 VLED- VLED- for B/L LED inverter (GND)
34 VLED- VLED- for B/L LED inverter (GND)
35 VLED+ VLED+ for B/L LED inverter (+5V)
36 VLED+ VLED+ for B/L LED inverter (+5V)

PCAP PIN Definition

Pin Symbol Function
1 VSS Ground for analog circuit
2 VDDT Power Supply : +3.0V
3 SCL I2C clock inputI2C 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

3.9 inch Bar Type PCAP TFT 480x128 - RFS390Q-EIW-DBG - Raystar

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

Operating conditions: (CON3.Pin1=GND, Pin2=VDD)

Item Symbol Min Typ Max Unit
Supply Voltage For LCM VDD 3.0 3.1 3.3 V
Supply Current For LCM IDD 200 mA
Supply Voltage For CTP VDDT 2.8 3.3 V
Supply Current For CTP IDDT 35 mA

Backlight driving conditions (CON3.Pin33,34=VLED-, Pin35,36=VLED+)

Item Symbol Min Typ Max Unit
Operation Current For LED Driver VLED=5V - 150 - mA
Supply Voltage For LED Driver VLED+ - 5 - V
LED Life Time   - 50,000 - Hr
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