Model No. WO256128A
►LCD COG
►Módulo Display LCD Gráfico
►256x128 pontos
►Controlador ST75256 integrado
►Alimentação +3,3V
►1/128 duty cycle
►Interface : 6800/8080/SPI/I2C
DRAWING
Data source ref: WO256128A-TFH#
SPECIFICATIONS
Interface Pin Function
| Pin No. | Symbol | Description | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ITOGND | ESD PIN | |||||||||||||||
| 2 | VG | 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 converte pin | |||||||||||||||
| 6 | CA1N | DC/DC Voltage converte pin | |||||||||||||||
| 7 | VDDA | +3.3V | |||||||||||||||
| 8 | VDD | +3.3V | |||||||||||||||
| 9 | VSS | ground | |||||||||||||||
| 10 | COMSCN | Set scan directing of COM | |||||||||||||||
| 11 | IF1 | These pins select interface operation mode
|
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| 12 | IF0 | ||||||||||||||||
| 13 | CSB | Chip select input pin | |||||||||||||||
| 14 | A0 | Whether the access is related to data or command | |||||||||||||||
| 15 | ERD | Read or write enable terminal | |||||||||||||||
| 16 | RWR | Read/Write execution control pin | |||||||||||||||
| 17 | RSTB | Reset input pin | |||||||||||||||
| 18~25 | D0~D7 | Data bus line | |||||||||||||||
| 26 | ITOGND | ESD PIN |
Mechanical Data
| Item | Dimension | Unit |
|---|---|---|
| Number of dots | 256 × 128 | － |
| Module dimension | 80.0 × 54.0 × 9.5 | mm |
| View area | 70.7 × 38.8 | mm |
| Active area | 66.54 × 33.26 | mm |
| Dot size | 0.24 × 0.24 | mm |
| Dot pitch | 0.26 × 0.26 | mm |
| Drive Method | 1/128 DUTY,1/12 BIAS | |
| Backlight Type | LED | |
| IC | ST75256i | |
| Interface | 4-Line SPI/IIC/8-bit 6800/8-bit 8080 | |
Absolute Maximum Ratings
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Temperature | TOP | -20 | － | 70 | ℃ |
| Storage Temperature | TST | -30 | － | 80 | ℃ |
| MPU Interface Input Voltage | VIN | -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 | － | 19.0 | V |
Electrical Characteristics
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage For Logic | VDD-VSS | － | 3 | 3.3 | 3.6 | V |
| Supply Voltage For LCM | VOP | Ta=-20℃ Ta=25℃ Ta=70℃ |
－ 14.2 － |
－ 14.5 － |
－ 14.8 － |
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 | － | 1.5 | － | mA |
