Home Products OLED Module Graphic OLED Display WEX025664B

OLED 256x64, 3.12 inch COF OLED Display

Model No. WEX025664B

►Type: Graphic (Without Frame)
►Structure: COF
►Size: 3.12"
►256 x 64 Dot Matrix
►Built-in controller SSD1322UR1
►3V Power supply
►1/64 duty
►Interface: 6800, 8080, SPI
►Display Color: White / Yellow / Sky Blue / Green / Support Grayscale


The model WEX025664B is Winstar COF 3.12 inch of standard OLED graphic display. This 256x64 OLED display is built-in SSD1322U driver IC which the outline dimension of  88 x 27.8 mm, AA size 76.778 x 19.178 mm. Winstar COF Series are suitable for wall / meter devices, home applications, POS system, Cloud/IoT system, handheld instruments, intelligent technology devices, energy systems, automotive, communication systems, medical instrument, etc. Customers can upgrade your current applications from traditional STN displays to OLED displays since Winstar provides a very wide range of dot pixel formats OLED solutions.


WEX025664B - OLED 256x64, 3.12 inch OLED Display Drawing


Interface Pin Function

Pin No. Symbol Description
1 NC No Connection
2 VSS Ground Pin
3 VCC Panel driving voltage
4 VCOMH COM deselected level
5 VLSS Analog system ground pin
6~13 D7~D0 Data Bus
14 E/RD# Chip Enable Signal
15 R/W# Read/Write Control
16~17 BS0~BS1 Interface selection
18 D/C# Data/Command Control Pin
19 CS# Chip Select Pin
20 RES# Reset Signal Pin  
21 FR Not Connected
22 IREF SEG output current refer pin
23 NC No Connection
24 VDDIO Voltage for interface logic 
25 VDD Voltage for logic
26 VCI Low voltage power supply
27 VSL SEG voltage refer Pin
28 VLSS Analog system ground pin
29 VCC Panel driving voltage
30 NC No Connection

Mechanical Data

Item Dimension Unit
Module dimension 88.0 × 27.8 mm
View area 78.78 × 21.18 mm
Active area 76.778 × 19.178  mm
Dot pitch 0.278 × 0.278 mm
Dot size 0.30 × 0.30  mm

Electronical Characteristics

Item Symbol Condition Standard Value Unit
Min Typ Max
Supply Voltage VDD --- 2.8 3.0 3.3 V

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