1.77 LCD Display Panel, Miniature LCD Display Panel - RFA180F-ALW-DNN - Raystar
1.77 LCD Display Panel, Miniature LCD Display Panel - RFA180F-ALW-DNN - Raystar
  • General Specs
  • Interface Pin Function
  • Contour Drawing
  • Absolute Maximum Ratings
  • Electrical Characteristics
Item Dimension Unit
Size 1.77 inch
Dot Matrix (Resolution) 128 × RGB × 160 (TFT) dots
Module Dimension 34.0(W) × 45.83(H) × 2.65(D) mm
Outline Dimension 34 × 45.83 mm
View Area 31.83 × 41.42 mm
Active Area 28.03 × 35.04 mm
Dot Pitch 0.073 × 0.219 mm
LCD Type TFT, Normally White, Transmissive
View Direction 6 o’clock
Gray Scale Inversion Direction 12 o’clock
Aspect Ratio Portrait
Backlight Type LED, Normally White
Control-Board No
Bulit-in Controller ST7735S
Interface MCU
Touch Panel Without Touch Panel
Surface Anti-Glare
Brightness 500 cd/㎡
Frame Through Hole No
Operating Temperature -20~70 °C
Storage Temperature -30~80 °C
TFT Series Standard TFT
Pin Symbol I/O Function
1 VLED- P Back light cathode
2 VLED+ P Back light anode
3 IM0 I - MCU Parallel Interface Type Selection
-If Not Used, Please Fix this Pin at VDDI or DGND Level. 
IM1 IM0 Parallel Interface
0 0 MCU 8-bit Parallel
0 1 MCU 16-bit Parallel
1 0 MCU 9-bit Parallel
1 1 MCU 18-bit Parallel
4 IM1
5 IM2 I MCU Parallel Interface Bus and Serial Interface select
IM2=’1’, Parallel Interface
IM2=’0’, Serial Interface 
6 RESET P Reset signal
7~12 NC - No Connect
13-28 DB15-DB0(SPI_SDA) I/O DB15:0] are used as MCU parallel interface data bus.
-DBis the serial input/output signal in serial interface mode.
-In serial interface, DB15:1] are not used and should be fixed at VDDI or DGND level.
29 NC - No Connect
30 RD I Read Enable in 8080 MCU Parallel Interface.
-If not used, please fix this pin at VDDI or DGND level. 
31 WR I Serial clock
-Write Enable in MCU Parallel Interface.
-If not used, please fix this pin at VDDI or DGND level. 
32 D/C(SPI_SCL) I -Display data/command Selection Pin in MCU Interface.
-D/CX=’1’: Display Data or Parameter.
-D/CX=’0’: Command Data.
-In Serial Interface, this is used as SCL.
-If not used, please fix this pin at VDDI or DGND level.
33 CS(SPI_CS) I Chip enable
34 IOVCC P Interface Operation Voltage 
35 VCI P Analog Supply Voltage
36 GND P Ground
37-40 NC - No Connect

1.77 LCD Display Panel, Miniature LCD Display Panel- RFA180F-ALW-DNN - Raystar

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 Analog VCI 2.5 2.75 4.8 V
Interface Operation Voltage  IOVCC 1.65 1.8 3.7 V
Supply LCM current ICI(mA) 0.9 2 mA

LED driving conditions

Parameter  Symbol Min Typ Max Unit
LED current   - 40 - mA
Power Consumption     128 - mW
LED voltage VBL+ 2.9 3.2 3.4 V
LED Life Time   - 50,000 - Hr
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