128x64 COG LCD Modules
Model No. WO12864B
►128x64 COG LCD
►Graphic LCD
►Built-in controller (ST7565P or equivalent)
►3.3V power supply
►1/65 duty cycle
►WO12864B : thickness 12.1mm (Max)
►WO12864B1 : thickness 6.0mm
►Interface : 6800/8080/SPI
DESCRIPTION
WO12864B is a 2.8 inch 128x64 COG monochrome Graphic LCD module. This LCD module is built in with ST7565P controller or equivalent IC. It supports 6800 8-bit, 8080 8-bit parallel and SPI interface. This LCD module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. This WO12864B COG display is very suitable for the applications that demand more compact package displays.
There are two versions for WO12864B series, which is different on thickness as below:
►WO12864B : thickness 12.1mm (Max)
►WO12864B1 : thickness 6.0mm
There are two versions for WO12864B series, which is different on thickness as below:
►WO12864B : thickness 12.1mm (Max)
►WO12864B1 : thickness 6.0mm
DRAWING
SPECIFICATIONS
Interface Pin Function
| Pin No. | Symbol | Description |
|---|---|---|
| 1 | /CS1B | This is the chip select signal. |
| 2 | /RES | Controller reset signal, Active Low |
| 3 | A0 | Data/ Instruction select signal |
| 4 | /WR(R/W) | 8080 family: Write signal, 6800 family: Read/Write signal |
| 5 | /RD(E) | 8080 family: Read signal, 6800 family: Enable clock |
| 6~13 | D0~D7 | Data bus line |
| 14 | VDD | Power supply for logic |
| 15 | VSS | Ground |
| 16 | Vout | Positive Voltage output |
| 17 | CAP3P | DC/DC voltage converter. |
| 18 | CAP1N | DC/DC voltage converter. |
| 19 | CAP1P | DC/DC voltage converter. |
| 20 | CAP2P | DC/DC voltage converter. |
| 21 | CAP2N | DC/DC voltage converter. |
| 22~26 | V4~ V0 | Bias voltage levels for LCD driving |
| 27 | VR | LCD Contrast Adjustment when IRS = “L” |
| 28 | C86 | Interface selection 6800/8080 |
| 29 | P/S | Selects the interface type: Serial or Parallel. |
| 30 | NC | No connection |
Mechanical Data
| Item | Standard Value | Unit |
|---|---|---|
| Module Dimension | 89.7 × 49.8 | mm |
| Viewing Area | 69.0 × 36.5 | mm |
| Mounting Hole | 82.7 × 40.2 | mm |
| Dot Pitch | 0.50 × 0.50 | mm |
| Dot Size | 0.47 × 0.47 | mm |
Electrical Characteristics
| Item | Symbol | Standard value typ. |
Unit |
|---|---|---|---|
| Input Voltage | VDD | 3.0 | V |
| Recommended LCD Driving Voltage for Normal Temp. Version module @25°C |
Vo-Vss | 9.50 | V |
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