Crest Technologies Pty Ltd Wholesaler and distributor of electronic components
Model No. WO128128B
WO128128B is a 128×128 monochrome graphic COG LCD module with a dimension of 68.0x72mm and AA size of 55.01 x 55.01 mm. The module is built-in with the ST75161 IC, which supports 6800/8080/SPI/I2C interfaces, a 3.3V power supply, 1/128 DUTY, and 1/12 BIAS.
This monochrome display can be operated at temperatures ranging from -20℃ to +70℃, and its storage temperature ranges from -30℃ to +80℃.
Data source ref： WO128128B-TFH#
| Pin No. | Symbol | Function |
|---|---|---|
| 1 | ESD GND | ESD Ground |
| 2 | VG | VG is the 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 converter |
| 6 | CA1N | |
| 7 | VDD | Power supply |
| 8 | VSS | Ground |
| 9 | COMSCN | Set scan direction of COM. |
| 10 | IF2 | These pins select interface operation mode. |
| 11 | IF1 | |
| 12 | IF0 | |
| 13 | CSB | Chip select input pin. |
| 14 | A0 | It determines whether the access is related to data or command. |
| 15 | ERD | Read / Write execution control pin. |
| 16 | RWR | Read / Write execution control pin. |
| 17-24 | RSTB | Hardware reset input pin |
| 25 | ERD | When using 8-bit parallel interface: 8080 or 6800 mode:8 bit bi-directional data bus When using serial interface : 4-line SPI or 3-line SPI mode D[7:4] : fix to “H” by VDD1. D[3:1] : serial input/output data (SDA). D[0] : serial input clock (SCL). D1 to D3 must be connected together (SDA) When using serial interface : I2C interface D[7] : SA[1], I2C slave address bit. Must be connected to VDD1 or VSS1. D[6] : SA[0], I2C slave address bit. Must be connected to VDD1 or VSS1. D[5:4] : fix to “H” by VDD1. D[3:2] : SDA_OUT, serial data and acknowledge output for the I2C interface. D[1] : SDA_IN, serial input data D[0] : SCL, serial input clock . D1 to D3 must be connected together (SDA) CSB must be fixed to “L” by VSS1. |
| 26 | A | Anode input for LED backlight. |
| 27 | K | Cathode input for LED backlight |
| 28 | ESD GND | ESD Ground |
| Item | Dimension | Unit |
|---|---|---|
| Number of dots | 128 x 128 | － |
| Module dimension | 68.0 x 72.0 x 6.5 | mm |
| View area | 62.0 x 62.0 | mm |
| Active area | 55.01 x 55.01 | mm |
| Dot size | 0.4 x 0.4 | mm |
| Dot pitch | 0.43 x 0.43 | mm |
| Duty | 1/128 DUTY,1/12 BIAS | |
| Backlight Type | LED | |
| IC | ST75161 | |
| Interface | 6800/8080/3/4-Line SPI/I2C | |
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage For Logic | VDD-VSS | – | 3.0 | 3.3 | 3.6 | V |
| Supply Voltage For LCD | VOP | Ta=-20℃ Ta=25℃ Ta=70℃ |
－ 14.8 － |
－ 15.1 － |
－ 15.4 － |
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 | – | – | 2.5 | mA |
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