3.12 inch 256x64 COF OLED Display With PCB and Frame - WEN025664B

3.12" 256x64 COF OLED Display With PCB and Frame

Model No. WEN025664B

►Type: Graphic
►Structure: COF+PCB+Frame
►Size: 3.12"
►256 x 64 Dot Matrix
►Built-in controller SSD1322
►3V Power supply
►1/64 duty
►Interface: 6800, 8080, SPI
►Display Color: White / Yellow / Sky Blue / Green
►Support Grayscale

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Description

The WEN025664B model is a COF Graphic OLED, featuring a diagonal size of 3.12 inches and a resolution of 256x64 dots. This OLED module is built-in with the SSD1322 IC and supports 8-bits 6800/8080 and 3/4-line SPI interfaces. It has an outline dimension of 89.2 × 44.0 mm, with an active area size of 76.78 × 19.18 mm. It also supports 4-bits grayscale, with a logic supply voltage of 3V. The display's current at 50% check board is 150mA @3.0V VDD (typical value), with a driving duty of 1/64.

The module has a built-in PCB, allowing customers to use wire connections without the need for additional PCB development for their applications. Additionally, the integrated VCC circuit on the PCB simplifies customer usage. This PCB board, equipped with four mounting holes, provides an easy method for customers to secure modules in their applications. This OLED module is suitable for smart home applications, medical devices, industrial control, etc.

The WEN025664B model can operate at temperatures ranging from -40℃ to +80℃, with storage temperatures ranging from -40℃ to +85℃. The OLED module features a high contrast ratio of 10,000:1, resulting in enhanced image quality, sharper details, and improved readability, especially in low-light environments.

Furthermore, OLED panels with the same dimensions offer a variety of alternatives:

WEX025664B series without a metal frame and PCB
WEX025664B-CTP series without a metal frame, PCB, and with a CTP touch screen
WEN025664B-CTP series with a metal frame, PCB, and CTP touch screen

DRAWING

Data source ref: WEN025664BWAP3N0000

SPECIFICATIONS

Interface Pin Function

Pin
Number

Symbol

I/O

Function

VSS

Ground.

VDD

Power Supply for Core Logic Circuit
Power supply pin for core logic operation. A capacitor is required to connect between this pin and VSS

N.C.

Reserved Pin
The N.C. pin between function pins are reserved for compatible and flexible design.

D/C#

Data/Command Control
This pin is Data/Command control pin connecting to the MCU.
When the pin is pulled HIGH, the content at D[7:0] will be interpreted as data.
When the pin is pulled LOW, the content at D[7:0] will be interpreted as command.

R/W#
(WR#)

Read/Write Select or Write
This pin is MCU interface input. When interfacing to a 68XX-series microprocessor, this pin will be used as Read/Write (R/W#) selection input. Pull this pin to “High” for read mode and pull it to “Low” for write mode.
When 80XX interface mode is selected, this pin will be the Write (WR#) input. Data write operation is initiated when this pin is pulled low and the CS# is pulled low.
When serial mode is selected, this pin must be connected to VSS.

E/RD#

Read/Write Enable or Read
This pin is MCU interface input.
When interfacing to a 68XX-series microprocessor, this pin will be used as the Enable (E) signal. Read/write operation is initiated when this pin is pulled high and the CS# is pulled low.
When connecting to an 80XX-microprocessor, this pin receives the Read (RD#) signal. Data read operation is initiated when this pin is pulled low and CS# is pulled low.
When serial mode is selected, this pin must be connected to VSS.

7~14

DB0

I/O

Host Data Input/Output Bus
These pins are 8-bit bi-directional data bus to be connected to the microprocessor’s data bus.
When serial mode is selected, DB1 will be the serial data input SDIN and DB0 will be the serial clock input SCLK.

DB1

DB2

DB3

DB4

DB5

DB6

DB7

Reserved Pin
The N.C. pin between function pins are reserved for compatible and flexible design.

RES#

This pin is reset signal input.
When the pin is pulled LOW, initialization of the chip is executed.
Keep this pin pull HIGH during normal operation.

CS#

Data/Command Control
This pin is the chip select input connecting to the MCU. The chip is enabled for MCU communication only when CS# is pulled LOW.

Reserved Pin
The N.C. pin between function pins are reserved for compatible and flexible design.

BS1

Communicating Protocol Select
These pins are MCU interface selection input. See the following table:

BS:[1:0]	Bus Interface Selection
00	4 line SPI
01	3 line SPI
10	8-bit 8080 parallel
11	8-bit 6800 parallel

Note
(1) 0 is connected to VSS
(2) 1 is connected to VDD

BS0

21~24

Reserved Pin
The N.C. pin between function pins are reserved for compatible and flexible design.

General Specification

Item	Dimension	Unit
Dot Matrix	256 x 64 Dots	－
Module dimension	89.2 × 44.0 × 3.3 Max.	mm
Active Area	76.78 × 19.18	mm
Pixel Size	0.278 × 0.278	mm
Pixel Pitch	0.3 × 0.3	mm
Display Mode	Passive Matrix
Display Color	Monochrome
Drive Duty	1/64 Duty
Gray Scale	4 bits
IC	SSD1322 (COF)
Interface	6800, 8080, SPI
Size	3.12 inch

Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Unit
Supply Voltage for Display	VDD	-0.3	4	V
Operating Temperature	TOP	-40	80	°C
Storage Temperature	TSTG	-40	85	°C

Electronical Characteristics

Item	Symbol	Condition	Min	Typ	Max	Unit
Supply Voltage for Logic	VDD	－	2.8	3.0	3.3	V
High Level Input	VIH	－	0.8×VDD	－	VDD	V
Low Level Input	VIL	－	0	－	0.2×VDD	V
High Level Output	VOH	－	0.9×VDD	－	VDD	V
Low Level Output	VOL	－	0	－	0.1×VDD	V
50% Check Board operating Current	IDD	VCC =3V	－	150	300	mA

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