128x64 COG Graphic STN LCD Display (ST7567A IC)
Model No. WO12864L
►COG LCD
►Graphic LCD
►Display Format : 128x64
►IC: ST7567A
►3V power supply
►1/65 duty cycle, 1/9 bias
►Interface : SPI / I2C
Description
WO12864L is a monochrome COG graphic LCD module made of 128x64 dots matrix. This COG WO12864L module is built in with ST7567A controller IC; it supports SPI and I2C interface. WO12864L module is having the same module dimension, AA and VA sizes as WO12864A1, but with different controller IC and interface. The users can use PIN 2 (SI2) to select I2C or SPI interface directly. This module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. The WO12864L is available for FSTN Positive Transflective with white LED backlight, if customers require different LCD type and LED combination, please contact us.
The advantage of WO12864L is having the peripheral circuit design optimization. Below is the comparison of circuit designs of WO12864L and WO12864A1. For new designs, WO12864L is a better choice.
| WO12864L-TFH# | WO12864A1-TFH# |
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DRAWING
Data source ref: WO12864L-TFH#
SPECIFICATIONS
Interface Pin Function
| Pin No. | Symbol | Description | ||||||
|---|---|---|---|---|---|---|---|---|
| 1 | ESD | ESD | ||||||
| 2 | SI2 | SI2 selects the interface type: I2C serial interface or not
|
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| 3 | VG | VG is the LCD driving voltage for segment circuits | ||||||
| 4 | XV0 | XV0 is the LCD driving voltage for common circuits at positive frame. | ||||||
| 5 | V0 | V0 is the LCD driving voltage for common circuits at negative frame. | ||||||
| 6 | VSS | GROUND | ||||||
| 7 | VDD | POWER | ||||||
| 8 | SDA | D[1:3] must be connected together as SDA. D[4:7]=(1,1,1,1): ID Pin. D[4:7] should fix to “H” or “L” by VDDH or VSSL. |
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| 9 | SCL | |||||||
| 10 | A0 | It determines whether the access is related to data or command. A0=“H” : Indicates that signals on D[7:0] are display data. A0=“L” : Indicates that signals on D[7:0] are command. |
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| 11 | RSTB | Hardware reset input pin. When RSTB is “L”, internal initialization is executed and the internal registers will be initialized. | ||||||
| 12 | CSB | Chip select input pin. Interface access is enabled when CSB is “L”. When CSB is non-active (CSB=“H”), D[7:0] pins are high impedance. |
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| 13 | ESD | ESD |
Mechanical Data
| Item | Dimension | Unit |
|---|---|---|
| Number of dots | 128 x 64 | — |
| Module dimension | 60.10 x 44.50 x 5.01(Max) | mm |
| View area | 54.6 x 32.0 | mm |
| Active area | 49.89 x 27.49 | mm |
| Dot size | 0.36 x 0.40 | mm |
| Dot pitch | 0.39 x 0.43 | mm |
| Drive Method | 1/65 DUTY, 1/9BIAS | |
| Backlight Type | LED | |
| IC | ST7567A (SPI & I2C) | |
Absolute Maximum Ratings
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Temperature | TOP | -20 | － | +70 | ℃ |
| Storage Temperature | TST | -30 | － | +80 | ℃ |
| Input Voltage | VI | -0.3 | － | VDD+0.3 | V |
| Digital Power Supply Voltage | VDD-Vss | -0.3 | － | 4.0 | V |
| LCD Power supply voltage | V0-XV0 | -0.3 | － | 18.0 | V |
Electrical Characteristics
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage For Logic | VDD-VSS | － | 2.9 | 3.0 | 3.1 | V |
| Supply Voltage For LCD *Note |
VOP | Ta=-20℃ Ta=25℃ Ta=70℃ |
－ 9.3 － |
－ 9.5 － |
－ 9.7 － |
V V V |
| Input High Volt. | VIH | － | 0.7VDD | － | VDD | V |
| Input Low Volt. | VIL | － | VSS | － | 0.3VDD | V |
| Supply Current | IDD | － | 2.0 | mA |
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