Model No. WEO012832R
►Type: Graphic
►Structure: COG
►Size: 0.91"
►128x32 OLED Display
►IC：SH1106
►3V Power supply
►1/32 duty
►Interface: I2C
►Display Color: Sky Blue, White
The WEO012832R series is a popular 0.91-inch COG graphic OLED module in the market. This module features a resolution of 128x32 dots and integrates the SH1106 IC, supporting an I2C interface. The IC also facilitates internal power boost and external power supply. With outline dimensions of 30.0 × 11.5 mm and an active area of 22.384 × 5.584 mm, the module is very lightweight due to its COG structure, measuring just 1.26 mm in thickness.
The logic power supply voltage ranges from 1.65V to 3.3V, with a typical value of 3.0V, and operates with a duty cycle of 1/32. Additionally, the module features a wide temperature range, reliably operating from -40℃ to +80℃, with a storage temperature range of -40℃ to +85℃.
This module is particularly suitable for various applications requiring compact and lightweight OLED displays. It is ideal for integrating into devices such as voice recorder, charging cables with embedded OLED displays and keychain lights featuring OLED displays, where space and visual clarity are paramount.
Data source ref:WEO012832RSPP3N00000
| 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 | SH1106 | |
| Interface | I2C | |
| Size | 0.91 inch | |
| Parameter | Symbol | Min | Max | Unit |
|---|---|---|---|---|
| Supply Voltage for Logic | VDD1 | -0.3 | 3.6 | V |
| Power supply for charge pump circuit | VDD2 | -0.3 | 4.8 | V |
| Supply Voltage for Display | VPP | -0.3 | 14.5 | V |
| Operating Temperature | TOP | -40 | +80 | °C |
| Storage Temperature | TSTG | -40 | +85 | °C |
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage for Logic | VDD1 | － | 1.65 | 3.0 | 3.3 | V |
| Supply Voltage for Display (Supplied Externally) |
VPP | － | 6.4 | 7.25 | 8 | V |
| Charge Pump Regulator Supply Voltage | VDD2 | － | 2.9 | － | 4.2 | V |
| Charge Pump Output Voltage for Display (Generated by Internal DC/DC) | Charge Pump VPP |
－ | 7.0 | 7.4 | － | V |
| Input High Volt. | VIH | － | 0.8×VDD1 | － | VDD1 | V |
| Input Low Volt. | VIL | － | VSS | － | 0.2×VDD1 | V |
| Output High Volt. | VOH | － | 0.8×VDD1 | － | VDD1 | V |
| Output Low Volt. | VOL | － | VSS | － | 0.2×VDD1 | V |
| Operating Current for VPP (VPP Supplied Externally) | IPP | VPP =7.25V | － | 8 | 12 | mA |
| Display 50% Pixel on (VPP Generated by Internal DC/DC) | IDD2 | － | － | 15 | 25 | mA |
| No. | Symbol | Function |
|---|---|---|
| 1 | C1N | Connect to charge pump capacitor. These pins are not used and should be disconnected when Vpp is supplied externally. |
| 2 | C1P | |
| 3 | C2P | |
| 4 | C2N | |
| 5 | VDD2 | Power supply pad for Power supply for charge pump circuit. This pin should be disconnected when VPP is supplied externally |
| 6 | NC | No connection |
| 7 | VSS | Ground. |
| 8 | VDD1 | Power supply input |
| 9 | RES# | This is a reset signal input pad. When RES is set to “L”, the settings are initialized. The reset operation is performed by the RES signal level. |
| 10 | SCL | When the I2C interface is selected, D0 serves as the serial clock input pad (SCL) and D1 serves as the serial data input pad (SDAI). |
| 11 | SDA | |
| 12 | IREF | This is a segment current reference pad. A resistor should be connected between this pad and VSS. Set the current at 18.75uA. |
| 13 | VCOMH | This is a pad for the voltage output high level for common signals. A capacitor should be connected between this pad and VSS. |
| 14 | VPP | OLED panel power supply. Generated by internal charge pump. Connect to capacitor. It could be supplied externally. |
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