The 0.91 inch is one of the most popular sizes of COG OLED for wearable displays which received 2017 Taiwan Excellence Award. Winstar Graphic COG 128×32 OLED display items no. WEO012832D is also built-in SSD1306 driver IC; it communicates via 4-wire serial SPI interface only. This controller’s built-in voltage generation only need a single 3V power supply is needed. WEO012832D OLED module can be operating at temperatures from -40℃ to +80℃; its storage temperatures range from -40℃ to +85℃. These COG 0.91 inch OLED resolution 128×32 modules are ultra thin, lightweight and low power consumption which is great for handheld instruments, meters, smart grid, wearable device, E-cigarette, MP3, IoT, etc. One of the significant advantages of COG structure is the FPC usually is bendable comparing to TAB OLED since the FPC is flexible and there is no chip on the FPC. Therefore, the customers have less limitation to design the displays on their applications.WEO012832D module supports internal Charge Pump supply and external VCC supply.
OLED 128×32, 128×32 OLED Display
Model No. WEO012832D
- 2017 Taiwan Excellence Award
- Type: Graphic
- Structure: COG
- Size: 0.91″
- 128×32 OLED Display
- IC：SSD1306
- 3V Power supply
- 1/32 duty
- Interface: SPI
- Display Color: White / Yellow / Sky Blue
- Other FPC options available in below table
Description
Drawing
Drawing
Data source ref: WEO012832DWPP3N00008
SPECIFICATIONS
SPECIFICATIONS
Interface Pin Function
| No. | Symbol | Function |
|---|---|---|
| 1 | C2P | Positive Terminal of the Flying Inverting Capacitor Negative Terminal of the Flying Boost CapacitorThe charge-pump capacitors are required between the terminals. They must be floated when the converter is not used. |
| 2 | C2N | |
| 3 | C1P | |
| 4 | C1N | |
| 5 | VBAT | Power Supply for DC/DC Converter Circuit This is the power supply pin for the internal buffer of the DC/DC voltage converter. It must be connected to external source when the converter is used. It should be connected to VDD when the converter is not used. |
| 6 | VSS | Ground of Logic Circuit This is a ground pin. It acts as a reference for the logic pins. It must be connected to external ground. |
| 7 | VDD | Power Supply for Logic This is a voltage supply pin. It must be connected to external source. |
| 8 | CS# | Chip Select This pin is the chip select input. The chip is enabled for MCU communication only when CS# is pulled low. |
| 9 | RES# | Power Reset for Controller and Driver This pin is reset signal input. When the pin is low, initialization of the chip is executed. |
| 10 | D/C# | Data/Command Control This pin is Data/Command control pin.. When the pin is pulled high and serial interface mode is selected, the data at SDIN is treated as data. When it is pulled low, the data at SDIN will be transferred to the command register. |
| 11 | SCLK | When serial mode is selected, D1 will be the serial data input SDIN and D0 will be the serial clock input SCLK. |
| 12 | SDIN | |
| 13 | IREF | Current Reference for Brightness Adjustment This pin is segment current reference pin. A resistor should be connected between this pin and VSS. Set the current lower than 30uA. |
| 14 | VCOMH | Voltage Output High Level for COM Signal This pin is the input pin for the voltage output high level for COM signals. A capacitor should be connected between this pin and VSS. |
| 15 | VCC | Power Supply for OEL Panel This is the most positive voltage supply pin of the chip. A stabilization capacitor should be connected between this pin and VSS when the converter is used. It must be connected to external source when the converter is not used. |
Mechanical Data
Mechanical Data
| Item | Dimension | Unit |
|---|---|---|
| Dot Matrix | 128 × 32 | Dots |
| Module dimension | 30.0 × 11.5 × 1.26 | mm |
| Active Area | 22.384 × 5.584 | mm |
| Pixel Size | 0.152 × 0.152 | mm |
| Pixel Pitch | 0.175 × 0.175 | mm |
| Display Mode | Passive Matrix | |
| Display Color | Monochrome | |
| Drive Duty | 1/32 Duty | |
| IC | SSD1306 | |
| Interface | 4-wire SPI | |
| Size | 0.91 inch | |
Absolute Maximum Ratings
Electronical Characteristics
Electronical Characteristics
DC Electrical Characteristics
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage for Logic | VDD | － | 2.8 | 3.0 | 3.3 | V |
| Supply Voltage for Display (Supplied Externally) | VCC | － | 7 | 7.25 | 8 | V |
| Charge Pump Regulator Supply Voltage | VBAT | － | 3.0 | － | 4.2 | V |
| Charge Pump Output Voltage for Display (Generated by Internal DC/DC) | Charge Pump VCC |
－ | 7.0 | 7.5 | – | V |
| Input High Volt. | VIH | － | 0.8×VDD | － | VDD | V |
| Input Low Volt. | VIL | － | 0 | － | 0.2×VDD | V |
| Output High Volt. | VOH | － | 0.9×VDD | － | VDD | V |
| Output Low Volt. | VOL | － | 0 | － | 0.1×VDD | V |
| Operating Current for VCC (VCC Supplied Externally) | ICC | VCC =7.25V | － | 7 | 11 | mA |
| Display 50% Pixel on (VCC Generated by Internal DC/DC) | IBAT | － | － | 15 | 25 | mA |
FPC Options:
FPC Options:
| Drawing | FPC Length | PIN | pitch | ZIF FPC or HOTBAR FPC | Interface | FPC No. | Create Date |
|---|---|---|---|---|---|---|---|
 |
17.06 | 15 | 0.65 | HOTBAR FPC | SPI | FPC2065001501XXXXX00 | 20140827 |
 |
40.76 | 15 | 0.5 | ZIF FPC | SPI | FPC2050001511XXXXX02 | 20150421 |
 |
11.26 | 14 | 0.62 | HOTBAR FPC | I2C | FPC2062001401XXXXX02 | 20160106 |
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