Model No. WEO128128A
►Type: Graphic
►Structure: COG
►Size: 1.5 inch
►OLED 128x128
►IC：SSD1327
►3V Power supply
►1/128 duty
►Interface: 6800, 8080, SPI, I2C
►Display Color: White / Yellow
►Support Grayscale
►Other FPC options available in below table
Winstar WEO128128A is a passive matrix OLED display which is made of 128x128 pixels, diagonal size 1.5 inch. The WEO128128A has the outline dimension of 33.8 x 36.5 mm and AA size 26.86 x 26.83 mm; it is built in with SSD1327 controller IC and it communicates via 6800/8080 8-bit parallel, I2C and 4-wire SPI serial interface, 3V power supply. The WEO128128A is a COG structure 128x128 OLED display which is ultra thin and no need of backlight (self emitting); it's lightweight and low power consumption. This OLED module is suitable for handheld instruments, meters, IoT, etc.
WEO128128A module can be operating at temperatures from -40℃ to +80℃; its storage temperatures range from -40℃ to +80℃. Below is the basic specification of WEO128128A as reference.
FPC Options
Data source ref: WEO128128ALAP3N00000
| Item | Dimension | Unit |
|---|---|---|
| Dot Matrix | 128 x 128 Dots | － |
| Module dimension | 33.80 x 36.50 x 2.05 | mm |
| Active Area | 26.86 x 26.86 | mm |
| Pixel Size | 0.185 x 0.185 | mm |
| Pixel Pitch | 0.210 x 0.210 | mm |
| Display Mode | Passive Matrix | |
| Display Color | Monochrome | |
| Drive Duty | 1/128Duty | |
| Gray Scale | 4 bits | |
| IC | SSD1327 | |
| Interface | 6800,8080,SPI,I2C | |
| Size | 1.5 inch | |
| Parameter | Symbol | Min | Max | Unit |
|---|---|---|---|---|
| Low voltage power supply, power supply for I/O pins | VCI | -0.3 | 4.0 | V |
| Supply Voltage for Logic | VDD | -0.5 | 2.75 | V |
| Supply Voltage for Display | VCC | -0.5 | 19.0 | V |
| Operating Temperature | TOP | -40 | +80 | °C |
| Storage Temperature | TSTG | -40 | +85 | °C |
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Low voltage power supply, power supply for I/O pins | VCI | 2.8 | 3 | 3.3 | V | |
| Supply Voltage for Display | VCC | － | 14 | 14.5 | 15 | V |
| Supply Voltage for Logic | VDD | － | 2.4 | － | 2.6 | V |
| High Level Input | VIH | － | 0.8×VCI | － | VCI | V |
| Low Level Input | VIL | － | 0 | － | 0.2×VCI | V |
| High Level Output | VOH | － | 0.9×VCI | － | VCI | V |
| Low Level Output | VOL | － | 0 | － | 0.1×VCI | V |
| 50% Check Board operating Current | VCC =14.5V | － | 24 | 36 | mA | |
| No. | Symbol | Function | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | VSS | Ground pin. It must be connected to external ground. | ||||||||||
| 2 | VCC | Power supply for panel driving voltage. This is also the most positive power voltage supply pin. It is supplied by external high voltage source. | ||||||||||
| 3 | VCOMH | COM signal deselected voltage level. A capacitor should be connected between this pin and VSS. No external power supply is allowed to connect to this pin. |
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| 4 | VCI | Low voltage power supply and power supply for interface logic level. It should match with the MCU interface voltage level and must be connected to external source. VCI must always set to be equivalent to or higher than VDD. |
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| 5 | VDD | Power supply pin for core logic operation. VDD can be supplied externally (within the range of 2.4V to 2.6V) or regulated Internally from VCI. A capacitor should be connected between VDD and VSS under all circumstances. |
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| 6 | BS1 | MCU bus interface selection pins. Select appropriate logic setting as described in the following table. BS2 and BS1 are pin select. Bus Interface selection
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| 7 | BS2 | |||||||||||
| 8 | VSS | Ground pin. It must be connected to external ground. | ||||||||||
| 9 | IREF | This pin is the segment output current reference pin | ||||||||||
| 10 | CS# | This pin is the chip select input connecting to the MCU. The chip is enabled for MCU communication only when CS# is pulled LOW (active LOW). |
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| 11 | RES# | This pin is reset signal input. When the pin is pulled LOW, initialization of the chip is executed. Keep this pin pull HIGH during normal operation. |
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| 12 | D/C | This pin is Data/Command control pin connecting to the MCU. When the pin is pulled HIGH, the data at D[7:0] will be interpreted as data. When the pin is pulled LOW, the data at D[7:0] will be transferred to a command register. In I2C mode, this pin acts as SA0 for slave address selection. |
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| 13 | W/R# | This pin is read / write control input pin connecting to the MCU interface. When 6800 interface mode is selected, this pin will be used as Read/Write (R/W#) selection input. Read mode will be carried out when this pin is pulled HIGH and write mode when LOW. When 8080 interface mode is selected, this pin will be the Write (WR#) input. Data write operation is initiated when this pin is pulled LOW and the chip is selected. |
| Drawing | FPC Length | PIN | Pitch | ZIF FPC or HOTBAR FPC | Interface | FPC No. | Create Date |
|---|---|---|---|---|---|---|---|
 |
25.05 | 24 | 0.5 | ZIF | 6800,8080,SPI,I2C | FPC2050002411XXXXX03 | 20150901 |
 |
41 | 24 | 0.5 | ZIF | 6800,8080,4-Wire SPI,I2C | FPC2050002411XXXXX12 | 20200116 |
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