Home Products OLED Module Graphic OLED Display WEO012832D

OLED 128x32, 128x32 OLED Display, 0.91 inch OLED

Model No. WEO012832D

►2017 Taiwan Excellence Award
►Type: Graphic (Without Frame)
►Structure: COG
►Size: 0.91 inch OLED
►128x32 OLED Display
►Built-in controller SSD1306BZ
►3V Power supply
►1/32 duty
►Interface: SPI
►Display Color: White / Yellow / Sky Blue

DESCRIPTION

0.91" OLED suitable for wearable device

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 items no. WEO012832D is also built-in SSD1306BZ 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 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 PFC. Therefore, the customers have less limitation to design the displays on their applications.

 

DRAWING

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

SPECIFICATIONS

Interface Pin Function

No. Symbol Function
1 C2P Positive Terminal of the Flying Inverting CapacitorNegative 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. In I2C mode, this pin acts as SA0 for slave address selection.
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 12.5μA.
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 SSD1306BZ
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 VCC 7 7.25 8 V
Input High Volt. VIH 0.8×VDD VDDIO V
Input Low Volt. VIL 0 0.2×VDD V
Output High Volt. VOH 0.9×VDD VDDIO V
Output Low Volt. VOL 0 0.1×VDD V
Operating Current for VCC (VCC Supplied Externally) ICC Vcc =7.25V 7 11 mA


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