Home Products OLED Module Graphic OLED Display WEO012832D

OLED 128x32, 128x32 OLED Display

Model No. WEO012832D

►2017 Taiwan Excellence Award
►Type: Graphic (Without Frame)
►Structure: COG
►Size: 0.91"
►128x32 OLED Display
►3V Power supply
►1/32 duty
►Interface: SPI
►Display Color: White / Yellow / Sky Blue
►Other FPC options available in below table


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 128x32 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 128x32 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.

   FPC Options



OLED 128x32, 128x32 OLED Display, 0.91 inch OLED - WEO012832D

Data source ref: WEO012832DWPP3N00008


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.
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.

General Specification

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

Parameter Symbol Min Max Unit
Supply Voltage for Logic VDD 0 4.0 V
Supply Voltage for Display VCC 0 16.0 V
Operating Temperature TOP -40 +80 °C
Storage Temperature TSTG -40 +85 °C

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
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:

Drawing FPC Length PIN pitch ZIF FPC or HOTBAR FPC Interface FPC No. Create Date
FPC2065001501XXXXX00_WEO012832DLPP3N00000 17.06 15 0.65 HOTBAR FPC SPI FPC2065001501XXXXX00 20140827
FPC2050001511XXXXX02_WEO012832DWPP3N00001 40.76 15 0.5 ZIF FPC SPI FPC2050001511XXXXX02 20150421
FPC2062001401XXXXX02_WEO012832FLPP3N00000 11.26 14 0.62 HOTBAR FPC I2C FPC2062001401XXXXX02 20160106

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