20 Characters x 2 Lines COG OLED Display with PCB
Model No. WEA002002A
►Type : Character
►Structure : COG+PCB
►20 characters x 2 Lines
►IC：SSD1311
►3.3V Power supply
►1/16 duty
►Interface: 6800, 8080, SPI, I2C
►Display Color: White / Yellow
Description
WEA002002A model is 2.93” 20 characters by 2 lines of COG Character OLED with a PCB on module. The PCB with four mounting holes is an easy fixing method for customers’ applications. This module is built-in with SSD1311 IC; it supports 6800/8080 4bit/8bit parallel, I2C, and 4-wire SPI serial interface. It has ROMs for ASCII, English and European and Japanese characters, the supply voltage for logic is default 3.3V, optional 5V, display with 50% check board current is 50mA @ 3.3VDD (typical value), driving duty 1/16. WEA002002A PCB design is suitable for customers to use cable connection; customers do not need to develop extra PCB by themselves. This module integrated interface settings and VCC circuit which allows customers easily to use.
This 2.93 inch Character OLED module is suitable for smart home application, medical device, smart control, industrial control and etc. WEA002002A module can be operating at temperatures from -40℃ to +80℃; its storage temperatures range from -40℃ to +85℃.
DRAWING
SPECIFICATIONS
Interface Pin Function
| Pin No. | Symbol | Pin Type | Description | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | VSS | P | Ground pin. It must be connected to external ground. | ||||||||||||||||||
| 2 | VDD | P | Power supply for core logic operation. A capacitor should be connected between VDD and VSS under all circumstances. |
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| 3 | REGVDD | I | Internal VDD regulator selection pin It must be connected to external ground. |
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| 4 | D/C# | I | This pin is Data/Command control pin connecting to the MCU. When the pin is pulled HIGH, the data at D[7:0] will be interpreted as data. When the pin is pulled LOW, the data at D[7:0] will be transferred to a command register. In I2C mode, this pin acts as SA0 for slave address selection. When serial interface is selected, this pin must be connected to VSS. |
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| 5 | R/W# | I | This pin is read / write control input pin connecting to the MCU interface. When 6800 interface mode is selected, this pin will be used as Read/Write (R/W#) selection input. Read mode will be carried out when this pin is pulled HIGH and write mode when LOW. When 8080 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 chip is selected. When serial or I2C interface is selected, this pin must be connected to VSS. |
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| 6 | E | I | This pin is MCU interface input. When 6800 interface mode is selected, this pin will be used as the Enable (E) signal. Read/write operation is initiated when this pin is pulled HIGH and the chip is selected. When 8080 interface mode is selected, this pin receives the Read (RD#) signal. Read operation is initiated when this pin is pulled LOW and the chip is selected. When serial or I2C interface is selected, this pin must be connected to VSS. |
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| 7 | D0 | I/O | These pins are bi-directional data bus connecting to the MCU data bus. Unused pins are recommended to tie LOW. When serial interface mode is selected, D0 will be the serial clock input: SCLK; D1 will be the serial data input: SID and D2 will be the serial data output: SOD. When I2C mode is selected, D2, D1 should be tied together and serve as SDAout, SDAin in application and D0 is the serial clock input, SCL. |
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| 8 | D1 | ||||||||||||||||||||
| 9 | D2 | ||||||||||||||||||||
| 10 | D3 | ||||||||||||||||||||
| 11 | D4 | ||||||||||||||||||||
| 12 | D5 | ||||||||||||||||||||
| 13 | D6 | ||||||||||||||||||||
| 14 | D7 | ||||||||||||||||||||
| 15 | CS# | I | This pin is the chip select input connecting to the MCU. The chip is enabled for MCU communication only when CS# is pulled LOW (active LOW). In I2C mode, this pin must be connected to VSS. |
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| 16 | RES# | I | 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. |
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| 17 | BS0 | I | MCU bus interface selection pins. Select appropriate logic setting as described in the following table. BS2, BS1 and BS0 are pin select. Bus Interface selection
(1) 0 is connected to VSS (2) 1 is connected to VDD |
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| 18 | BS1 | ||||||||||||||||||||
| 19 | BS2 | ||||||||||||||||||||
| 20 | VSS | P | Ground pin. It must be connected to external ground. |
Mechanical Data
| Item | Dimension | Unit |
|---|---|---|
| Number of Characters | 20 Characters x 2 Lines | － |
| Module dimension | 92.3 x 23.3 x 5.96 Max.. | mm |
| Active area | 73.52 x 11.52 | mm |
| Dot size | 0.62 x 0.67 | mm |
| Dot pitch | 0.65 x 0.70 | mm |
| Character size | 3.22 x 5.57 | mm |
| Character pitch | 3.70 x 5.95 | mm |
| LCD type | OLED , Monochrome | |
| Duty | 1/16 | |
| IC | SSD1311 | |
| Interface | 6800, 8080, SPI, I2C | |
| Size | 2.93 inch | |
Absolute Maximum Ratings
| Item | Symbol | Min | Max | Unit |
|---|---|---|---|---|
| Supply Voltage For Logic | VDD-VSS | -0.3 | 3.6 | V |
| Operating Temperature | TOP | -40 | +80 | °C |
| Storage Temperature | TST | -40 | +85 | °C |
Electrical Characteristics
DC Electrical Characteristics
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage For Logic | VDD-VSS | － | 3.1 | 3.3 | 3.5 | V |
| Input High Volt. | VIH | － | 0.8xVDD | － | － | V |
| Input Low Volt. | VIL | － | － | － | 0.2xVDD | V |
| Output High Volt. | VOH | IOH=-0.5mA | 0.9xVDD | － | － | V |
| Output Low Volt. | VOL | IOL=0.5mA | － | － | 0.1xVDD | V |
| 50% Check Board operating Current | IDD | VDD=3.3V | － | 50 | 75 | mA |
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