128x64 Graphic 2.42-inch COG OLED Display Module
Model No. WEO012864AL
►Type: Graphic
►Structure: COG
►Size: 2.42"
►128 x 64 Dot Matrix
►IC：SH1106
►3V Power supply
►1/64 duty
►Interface: I2C,SPI,6800,8080
►Display Color: White / Yellow
Description
WEO012864AL is a 2.42-inch COG structure graphic OLED display, made of resolution 128x64 pixels. This module is built-in with SH1106 IC; it can be communicated via I2C, 4-wire SPI serial or 6800, 8080 parallel interface and, its 10,000:1 high contrast ratio makes the display image more clear. The supply voltage of logic is 1.65 V~ 3.3 V (typical value 3V), supply voltage for display is 6.4V~ 13.5V (typical value 13V), 1/64 driving duty. WEO012864AL series has PCB board, ZIF FPC, and Hotbar FPC versions optional.
The COG OLED display is very suitable for handheld products, measuring instruments, smart meters, wearable products, IoT devices, etc., due to its thin, light weight and low current consumption features. This module can be operating at temperatures from -40℃ to +80℃; its storage temperatures range from -40℃ to +85℃.
DRAWING
Data source ref:WEO012864ALWPP3N00000
SPECIFICATIONS
Interface Pin Function
| No. | Symbol | Function | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ESD_GND | ESD Ground pin | |||||||||||||||
| 2 | VSS | Ground. | |||||||||||||||
| 3-10 | NC | No connection | |||||||||||||||
| 11 | VDD1 | Power supply input | |||||||||||||||
| 12 | IM1 | These are the MPU interface mode select pads.
(1) 0 is connected to VSS (2) 1 is connected to VDD1 |
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| 13 | IM2 | ||||||||||||||||
| 14 | NC | No connection | |||||||||||||||
| 15 | /CS | This pad is the chip select input. When /CS= “L”, then the chip select becomes active, and data/command I/O is enabled. | |||||||||||||||
| 16 | /RES | This is a reset signal input pad. When /RES is set to “L”, the settings are initialized. The reset operation is performed by the /RES signal level. | |||||||||||||||
| 17 | A0 | This is the Data/Command control pad that determines whether the data bits are data or a command. A0 = “H”: the inputs at D0 to D7 are treated as display data. A0 = “L”: the inputs at D0 to D7 are transferred to the command registers. In I2C interface, this pad serves as SA0 to distinguish the different address of OLED driver. |
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| 18 | /WR (R/W) |
This is a MPU interface input pad. When connected to an 8080 MPU, this is active LOW. This pad connects to the 8080 MPU/WR signal. The signals on the data bus are latched at the rising edge of the /WR signal. When connected to a 6800 Series MPU: This is the read/write control signal input terminal. When R/W= “H”: Read. When R/W= “L”: Write. |
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| 19 | E/RD | This is a MPU interface input pad. When connected to an 8080 series MPU, it is active LOW. This pad is connected to the /RD signal of the 8080 series MPU, and the data bus is in an output status when this signal is “L”. When connected to a 6800 series MPU, this is active HIGH. This is used as an enable clock input of the 6800 series MPU. When /RD = “H”: Enable. When /RD = “L”: Disable. |
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| 20~27 | D0~D7 | This is an 8-bit bi-directional data bus that connects to an 8-bit or 16-bit standard MPU data bus. When the serial interface is selected, then D0 serves as the serial clock input pad (SCL) and D1 serves as the serial data input pad (SI). At this time, D2 to D7 are set to high impedance. When the I2C interface is selected, then D0 serves as the serial clock input pad (SCL) and D1 serves as the serial data input pad (SDAI). At this time, D2 to D7 are set to high impedance. |
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| 28 | IREF | This is a segment current reference pad. A resistor should be connected between this pad and VSS. Set the current at 18.75uA. | |||||||||||||||
| 29 | VCOMH | This is a pad for the voltage output high level for common signals. A capacitor should be connected between this pad and VSS. |
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| 30 | VPP | OLED panel power supply. Generated by internal charge pump. Connect to capacitor. It could be supplied externally. |
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| 31 | ESD_GND | ESD Ground pin |
Mechanical Data
| Item | Dimension | Unit |
|---|---|---|
| Dot Matrix | 128 × 64 | dots |
| Module dimension | 60.5 × 37.0 × 2.01 | mm |
| Active Area | 55.01 × 27.49 | mm |
| Pixel Size | 0.40 × 0.40 | mm |
| Pixel Pitch | 0.43 × 0.43 | mm |
| Display Mode | Passive Matrix | |
| Display Color | Monochrome | |
| Drive Duty | 1/64 Duty | |
| IC | SH1106 | |
| Interface | I2C , 4-Wire SPI , 8-bits 6800, 8080 | |
| Size | 2.42 inch | |
Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
|---|---|---|---|---|
| Supply Voltage for Logic | VDD1 | -0.3 | 3.6 | V |
| Supply Voltage for Display | VPP | -0.3 | 14.5 | 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 | VDD1 | － | 1.65 | 3.0 | 3.3 | V |
| Supply Voltage for Display | VPP | － | 6.4 | 13.0 | 13.5 | V |
| High Level Input | VIH | － | 0.8×VDD1 | － | VDD1 | V |
| Low Level Input | VIL | － | VSS | － | 0.2×VDD1 | V |
| High Level Output | VOH | － | 0.8×VDD1 | － | VDD1 | V |
| Low Level Output | VOL | － | VSS | － | 0.2×VDD1 | V |
| Display 50% Pixel on | IPP | VPP =13V | － | 22 | 33 | mA |
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