20×4 OLED Display

Model No. WEH002004A

  • Type: Character
  • Structure : COB
  • 20 characters x 4 Lines
  • IC：WS0010-TX
  • 5V power supply
  • 1/16 duty cycle
  • Interface: 6800, option 8080, SPI
  • Compatible to STN LCD WH2004A
  • Display Color: White / Yellow / Blue / Green
Categories: ,

Description

The WEH002004A is a COB-structured OLED display module featuring a 20×4 character configuration. It boasts a 2.88-inch diagonal module size with an active display area of 70.16 x 20.95 mm and integrates the WS0010-TX all-in-one font IC. Supporting the default interface of 6800, with optional 8080 or SPI interfaces, it operates in a 1/16 duty drive mode. All standard Winstar COB OLED character types are equipped with this all-in-one Fonts controller IC, offering support for ASCII, English, Russian, European, and Japanese character sets via a built-in ROM standard font library.

The WEH002004A shares identical outline dimensions (98.0 x 60.0 mm) and view area size (77.0 x 25.2 mm) as the Winstar LCD WH2004A, utilizing the same pinout configuration. Winstar’s 20×4 OLED Display is an excellent choice for upgrading applications from STN LCDs to OLED displays. Key features include:

Faster response time at +25°C (10 microseconds)
Unlimited viewing angle up to 175 degrees
Thin design with self-emitting technology, eliminating the need for a backlight
High brightness and a contrast ratio of up to 10,000:1
Wide operating temperature range from -40°C to 80°C
Lower power consumption, contributing to reduced CO2 emissions

The module has an integrated PCB board, eliminating the need for customers to develop additional PCBs. Additionally, four screw holes on the PCB board simplify installation. Operating at a logic supply voltage ranging from 4.8V to 5.3V (typically 5.0V), this OLED module ensures reliable performance across a broad temperature spectrum, with storage capabilities from -40°C to +85°C. It also offers multiple emitting colors to cater to diverse customer preferences.

For applications requiring a 20×4 OLED display, the WEH002004A stands out for its efficient performance and versatile functionality.

Drawing

Drawing

20x4 OLED Display, 20x4 - WEH002004A

Data source ref: WEH002004AWPP5N00100

SPECIFICATIONS

SPECIFICATIONS

Interface Pin Function

Pin No. Symbol Level Description
1 VSS 0V Ground
2 VDD 5.0V Supply Voltage for logic
3 NC －
4 RS H/L H: DATA, L: Instruction code
5 R/W H/L H: Read(Module→MPU) L: Write(MPU→Module)
6 E H,H→L Chip enable signal
7 DB0 H/L Data bit 0
8 DB1 H/L Data bit 1
9 DB2 H/L Data bit 2
10 DB3 H/L Data bit 3
11 DB4 H/L Data bit 4
12 DB5 H/L Data bit 5
13 DB6 H/L Data bit 6
14 DB7 H/L Data bit 7
15 NC －
16 NC －

General Specification

General Specification

Item Dimension Unit
Number of Characters 20 characters × 4 Lines －
Module dimension 98.0 × 60.0 × 10.0(MAX) mm
View area 77.0 × 25.2 mm
Active area 70.16 × 20.95 mm
Dot size 0.54 × 0.55 mm
Dot pitch 0.59 × 0.60 mm
Character size 2.9 × 4.75 mm
Character pitch 3.54 × 5.4 mm
Panel type OLED, Monochrome
Duty 1/16
IC WS0010-TX
Interface 6800, option 8080, SPI
Size 2.88 inch

 

Absolute Maximum Ratings

Absolute Maximum Ratings

Item Symbol Min Max Unit
Operating Temperature TOP -40 +80 °C
Storage Temperature TST -40 +85 °C
Supply Voltage For Logic VDD-VSS -0.3 5.3 V

Electronical Characteristics

Electronical Characteristics

DC Electrical Characteristics

Item Symbol Condition Min Typ Max Unit
Supply Voltage For Logic VDD-VSS － 4.8 5.0 5.3 V
Input High Volt. VIH － 0.8xDD － VDD V
Input Low Volt. VIL － GND － 0.2xVDD V
Output High Volt. VOH IOH=-0.5mA 0.8xVDD － VDD V
Output Low Volt. VOL IOL=0.5mA GND － 0.2xVDD V
50% Check Board
Operating Current		 IDD VDD=5V － 230 345 mA

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