Model No. WO128128A2
►COG LCD Display
►Type: Graphic
►Structure: COG+PCB
►Size: 2.45"
►Display Format : 128x128 dots
►IC: ST75161
►+3V power supply
►1/136 duty cycle
►Interface : Default 8080, Option 6800, SPI-4 Line/SPI-3Line 9bit, I2C
The WO128128A2 model is a COG round LCD display module featuring a PCB board on the module. This round LCD display module is integrated with the ST75161 IC and supports the default 6800 interface, with optional 8080, SPI, and I2C interfaces. The power supply voltage is 3V, with a 1/136 driving duty and 1/12 BIAS.
One notable advantage of the WO128128A2 is its PCB board with a circuit layout and screw holes, facilitating easy fixing onto customers' applications. Additionally, there are three connector pitch size options: 2.54mm (default), 1.0mm, and 0.5mm. The WO128128A2 also offers an optional VDD 5V power supply voltage.
The logic supply voltage for the WO128128A2 is in the range of 2.7V to 3.3V, with a typical value of 3V. This round LCD module can operate within temperatures ranging from -20℃ to +70℃, and its storage temperatures range from -30℃ to +80℃.
The WO128128A2 Round LCD Screen Panel is available in FSTN positive LCD type with white LED backlight. Please feel free to contact us if you require different types of round LCDs or LED combinations.
WO128128A | WO128128A2 | WEO128128B | WEO128128D-CTP | WF0128BTYAA4DNN0 | WF0128BTYAA4DNF10 | WF0340ATYAB7MNN0
| Item | Dimension | Unit |
|---|---|---|
| Number of dots | 128 x 128 | － |
| Module dimension | 60.0 x 62.79 x 8.6 | mm |
| View area | 42.0 x 42.0 | mm |
| Active area | 44.0 x 44.0 | mm |
| Dot size | 0.308 x 0.308 | mm |
| Dot pitch | 0.328 x 0.328 | mm |
| Duty | 1/136 Duty,1/12 Bias | |
| Backlight Type | LED | |
| IC | ST75161 | |
| Interface | 8080 | |
| 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 | VLCD | -0.3 | － | 20 | 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 | － | 2.7 | 3.0 | 3.3 | V |
| Supply Voltage For LCD | VOP | Ta=-20℃ Ta=25℃ Ta=70℃ |
－ 13.7 － |
－ 14.0 － |
－ 14.3 － |
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=3.0V | － | 2.0 | － | mA |
| Pin No. | SYMBOL | Function |
|---|---|---|
| 1 | VDD | Power supply |
| 2 | NC | No Connection |
| 3 | VSS | Ground |
| 4 | CSB | Chip select input pin. |
| 5 | A0 | It determines whether the access is related to data or command. |
| 6 | ERD | Read / Write execution control pin. |
| 7 | RWR | Read / Write execution control pin. |
| 8 | RSTB | Hardware reset input pin |
| 9-16 | D0-D7 | 8 bit bi-directional data bus |
| 17 | A | Anode input for LED backlight. |
| 18 | K | Cathode input for LED backlight |
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