Model No. WO128128B
►COG LCD Display
►Type: Graphic
►Structure: COG
►Size: 3.06"
►Display Format : 128x128 dots
►IC: ST75161
►3.3V power supply
►1/128 DUTY , 1/12 BIAS
►Interface :6800/8080/SPI/I2C
WO128128B is a 3.06-inch 128x128 monochrome graphic COG LCD module featuring the ST75161 controller IC. The module supports 6800, 8080, 3-line SPI, 4-line SPI, and I2C interfaces. It operates from a 3.3V logic supply and is configured with a 1/128 duty cycle and 1/12 bias.
The module measures 68.0 x 72.0 x 6.5 mm, with a 62.0 x 62.0 mm view area and a 55.01 x 55.01 mm active area. It features an LED backlight and is designed for operating temperatures from -20°C to +70°C and storage temperatures from -30°C to +80°C.
The compact COG design reduces the overall module profile while offering multiple interface options for flexible integration into embedded systems. Its monochrome graphic display makes it well suited for applications requiring a compact embedded display solution. For product availability, pricing, or customization requests, click ADD TO INQUIRY above and specify your requirements in the Message field.
Data source ref： WO128128B-TFH#
| Item | Dimension | Unit |
|---|---|---|
| Number of dots | 128 x 128 | － |
| Module dimension | 68.0 x 72.0 x 6.5 | mm |
| View area | 62.0 x 62.0 | mm |
| Active area | 55.01 x 55.01 | mm |
| Dot size | 0.4 x 0.4 | mm |
| Dot pitch | 0.43 x 0.43 | mm |
| Duty | 1/128 DUTY,1/12 BIAS | |
| Backlight Type | LED | |
| IC | ST75161 | |
| Interface | 6800/8080/3/4-Line SPI/I2C | |
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Temperature | TOP | -20 | - | +70 | ℃ |
| Storage Temperature | TST | -30 | - | +80 | ℃ |
| Power Supply Voltage | VDD | -0.3 | - | 4.0 | V |
| LCD Power supply voltage | V0-XV0 | -0.3 | - | 19 | V |
| Input voltage | VIN | -0.3 | - | VDD+0.3 | V |
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage For Logic | VDD-VSS | - | 3.0 | 3.3 | 3.6 | V |
| Supply Voltage For LCD | VOP | Ta=-20℃ Ta=25℃ Ta=70℃ |
－ 14.8 － |
－ 15.1 － |
－ 15.4 － |
V V V |
| Input High Volt. | VIH | - | 0.7 VDD | - | VDD | V |
| Input Low Volt. | VIL | - | Vss | - | 0.3 VDD | V |
| Output High Volt. | VOH | - | 0.8 VDD | - | VDD | V |
| Output Low Volt. | VOL | - | Vss | - | 0.2 VDD | V |
| Supply Current | IDD | VDD=3.3V | - | - | 2.5 | mA |
| Pin No. | Symbol | Function |
|---|---|---|
| 1 | ESD GND | ESD Ground |
| 2 | VG | VG is the power of SEG-drivers. |
| 3 | V0 | Positive operating voltage of COM-drivers. |
| 4 | XV0 | Negative operating voltage of COM-drivers. |
| 5 | CA1P | DC/DC voltage converter |
| 6 | CA1N | |
| 7 | VDD | Power supply |
| 8 | VSS | Ground |
| 9 | COMSCN | Set scan direction of COM. |
| 10 | IF2 | These pins select interface operation mode. |
| 11 | IF1 | |
| 12 | IF0 | |
| 13 | CSB | Chip select input pin. |
| 14 | A0 | It determines whether the access is related to data or command. |
| 15 | ERD | Read / Write execution control pin. |
| 16 | RWR | Read / Write execution control pin. |
| 17-24 | RSTB | Hardware reset input pin |
| 25 | ERD | When using 8-bit parallel interface: 8080 or 6800 mode:8 bit bi-directional data bus When using serial interface : 4-line SPI or 3-line SPI mode D[7:4] : fix to “H” by VDD1. D[3:1] : serial input/output data (SDA). D[0] : serial input clock (SCL). D1 to D3 must be connected together (SDA) When using serial interface : I2C interface D[7] : SA[1], I2C slave address bit. Must be connected to VDD1 or VSS1. D[6] : SA[0], I2C slave address bit. Must be connected to VDD1 or VSS1. D[5:4] : fix to “H” by VDD1. D[3:2] : SDA_OUT, serial data and acknowledge output for the I2C interface. D[1] : SDA_IN, serial input data D[0] : SCL, serial input clock . D1 to D3 must be connected together (SDA) CSB must be fixed to “L” by VSS1. |
| 26 | A | Anode input for LED backlight. |
| 27 | K | Cathode input for LED backlight |
| 28 | ESD GND | ESD Ground |
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