1.12 inch OLED, 128x128 SPI OLED Display
Model No. WEO128128G
►Type: Graphic
►Structure: COG
►Size: 1.12"
►128 x 128 Dot Matrix
►IC：SH1107
►3V Power supply
►1/128 duty
►Interface: 6800,8080,4-wire SPI,I2C
►Display Color: White / Yellow
Description
WEO128128G is a 1.12 inch Graphic OLED display featuring COG structure with HotBar FPC; made of resolution 128x128 pixels. This module is built-in with SH1107 IC; it supports 6800/8080 8-bit parallel, 4-Wire SPI, I2C interface, the supply voltage for Logic 3V (typical value), and the supply voltage for display is 12V. The current with 50% checkerboard display is 15mA @ VCC 12V (for white color), 1/128 driving duty.
WEO128128G is a COG structure OLED display module that is lightweight, low power, and very thin. It is suitable for meter devices, home applications, POS systems, Cloud/IoT systems, handheld instruments, intelligent technology devices, energy systems, automotive, communication systems, medical instruments, etc. WEO128128G OLED module can be operating at temperatures from -40℃ to +80℃; its storage temperatures range from -40℃ to +85℃.
DRAWING
Data source ref:WEO128128GWAP3N00000
SPECIFICATIONS
Interface Pin Function
| No. | Symbol | Function | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | VPP | This is the most positive voltage supply pad of the chip. It should be supplied externally. |
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| 2 | VCOMH | This is a pad for the voltage output high level for common signals. A capacitor should be connected between this pad and VSS. |
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| 3 | VDD | Power supply for logic and input. | |||||||||||||||
| 4 | NC | Not connected. | |||||||||||||||
| 5 | IM1 | These are the MPU interface mode select pads.
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| 6 | IM2 | ||||||||||||||||
| 7 | IREF | This is a segment current reference pad. A resistor should be connected between this pad and VSS. Set the current at 15.625mA. | |||||||||||||||
| 8 | CS | This pad is the chip select input. When CS = “L”, then the chip select becomes active, and data/command I/O is enabled. | |||||||||||||||
| 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 | A0 | This is the Data/Command control pad that determines whether the data bits are data or a command. A0 = “H”: the inputs at D0 to D7 are treated as display data. A0 = “L”: the inputs at D0 to D7 are transferred to the command registers. In I2C interface, this pad serves as SA0 to distinguish the different address of OLED driver. |
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| 11 | WR | This is a MPU interface input pad. When connected to an 8080 MPU, this is active LOW. This pad connects to the 8080 MPU WR signal. The signals on the data bus are latched at the rising edge of the WR signal. When connected to a 6800 Series MPU: This is the read/write control signal input terminal. When WR = “H”: Read. When WR = “L”: Write. |
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| 12 | E/RD | This is a MPU interface input pad. When connected to an 8080 series MPU, it is active LOW. This pad is connected to the RD signal of the 8080 series MPU, and the data bus is in an output status when this signal is “L”. When connected to a 6800 series MPU, this is active HIGH. This is used as an enable clock input of the 6800 series MPU. |
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| 13~20 | D0~D7 | This is an 8-bit bi-directional data bus that connects to an 8-bit or 16-bit standard MPU data bus. When the serial interface is selected, then D0 serves as the serial clock input pad (SCL) and D1serves as the serial data input pad (SI). At this time, D2 to D7 are set to high impedance. When the I2C interface is selected, then D0 serves as the serial clock input pad (SCL) and D1 serves as the serial data input pad (SDA). At this time, D2 to D7 are set to high impedance. |
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| 21 | GND | Ground | |||||||||||||||
| 22 | NC | Not connected. |
Mechanical Data
| Item | Dimension | Unit |
|---|---|---|
| Dot Matrix | 128 × 128 | dots |
| Module dimension | 25.9 x 30.1 x 1.26 | mm |
| Active Area | 20.076 x 20.076 | mm |
| Pixel Size | 0.137 x 0.137 | mm |
| Pixel Pitch | 0.157 x 0.157 | mm |
| Display Mode | Passive Matrix | |
| Display Color | Monochrome | |
| Drive Duty | 1/128 Duty | |
| IC | SH1107 | |
| Interface | 6800,8080,4-wire SPI,I2C | |
| Size | 1.12 inch | |
Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
|---|---|---|---|---|
| Supply Voltage for Logic | VDD | -0.3 | 3.6 | V |
| Supply Voltage for Display | VPP | -0.3 | 17.0 | V |
| Operating Temperature | TOP | -40 | +80 | °C |
| Storage Temperature | TSTG | -40 | +85 | °C |
Electronical Characteristics
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage for Logic | VDD | － | 1.65 | 3.0 | 3.3 | V |
| Supply Voltage for Display | VPP | － | 7.0 | 12.0 | 12.5 | V |
| Input High Volt. | VIH | － | 0.8×VDD | － | VDD | V |
| Input Low Volt. | VIL | － | 0 | － | 0.2×VDD | V |
| Output High Volt. | VOH | － | 0.8×VDD | － | VDD | V |
| Output Low Volt. | VOL | － | 0 | － | 0.2×VDD | V |
| 50% Check Board operating Current | IPP | VPP=12V | － | 15.0 | 25.0 | mA |
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