Chip-on-Glass LCD Module 128x64
Model No. WO12864C2
►COG LCD 128x64
►Graphic LCD
►Built-in controller (ST7565P or equivalent)
►3.3V power supply
►1/64 duty cycle
►Interface : 6800/8080/SPI
DRAWING
SPECIFICATIONS
Interface Pin Function
| Pin No. | Symbol | Description |
|---|---|---|
| 1 | IRS | Selects the resistors for the V0 voltage level adjustment |
| 2 | /HPM | Control power supply for LCD “H”: Normal mode, “L”: High power mode |
| 3 | P/S | Selects the interface type: Serial or Parallel. |
| 4 | C86 | Interface selection 6800/8080 |
| 5 | VR | LCD Contrast Adjustment when IRS = “L” |
| 6~10 | V0~V4 | Bias voltage levels for LCD driving |
| 11 | VRS | This is the internal-output VREG power supply for the LCD power supply voltage regulator. |
| 12 | CAP4+ | DC/DC voltage converter. |
| 13 | CAP2- | DC/DC voltage converter. |
| 14 | CAP2+ | DC/DC voltage converter. |
| 15 | CAP1+ | #N/A |
| 16 | CAP1- | DC/DC voltage converter. |
| 17 | CAP3+ | DC/DC voltage converter. |
| 18 | CAP5+ | DC/DC voltage converter |
| 19 | Vout | Positive Voltage output |
| 20 | VSS | Ground |
| 21 | VDD | Power supply for logic |
| 22~29 | D7~D0 | #N/A |
| 30 | /RD(E) | 8080 family: Read signal, 6800 family: Enable clock |
| 31 | /WR(RW) | 8080 family: Write signal, 6800 family: Read/Write signal |
| 32 | A0 | Data/ Instruction select signal |
| 33 | /RES | Controller reset signal, Active Low |
| 34 | /CS1 | This is the chip select signal. |
Mechanical Data
| Item | Standard Value | Unit |
|---|---|---|
| Module Dimension | 55.2 × 39.8 | mm |
| Viewing Area | 45.2 × 27.0 | mm |
| Dot Pitch | 0.32 × 0.38 | mm |
| Dot Size | 0.28 × 0.34 | 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 | 9.60 | V |
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