Home Products OLED Module Graphic OLED Display WEO012832G

1.71 inch OLED Graphic

Model No. WEO012832G

►Type: Graphic
►Structure: COG
►Size: 1.71 inch
►128 x 32 Dot Matrix
►Built-in controller SSD1307ZD
►3V Power supply
►1/32 duty
►Interface: SPI, I2C

DESCRIPTION

WEO012832G is a 1.71 inch passive matrix OLED display module which is made of 128x32 dots. The module is built in with SSD1307 IC, it supports I2C and 4-Wire SPI interface, 3V power supply, 1/32 duty cycle.

The WEO012832G is a COG structure OLED display which is ultra thin and no need of backlight; it’s lightweight and low power consumption. This 1.71 inch OLED module is suitable for smart home application, portable device, health device, testing equipment, etc.  WEO012832G module can be operating at temperatures from -40℃ to +80℃; its storage temperatures range from -40℃ to +85℃.

  • WEO012832GW : White

 

DRAWING

SPECIFICATIONS

Interface Pin Function

No. Symbol Function
1 N.C. (GND) Reserved Pin (Supporting Pin)
The supporting pins can reduce the influences from stresses on the function pins. These pins must be connected to external ground.
2 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.
3 VLSS Ground of Analog Circuit
This is an analog ground pin. It should be connected to VSS externally.
4 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.
5 VDD Power Supply for Logic
This is a voltage supply pin. It must be connected to external source.
6 CS# Chip Select
This pin is the chip select input. The chip is enabled for MCU communication only when CS# is pulled low.
7 RES# Power Reset for Controller and Driver
This pin is reset signal input. When the pin is low, initialization of the chip is executed.
8 D/C# Data/Command Control
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.
9~11 D0~D2 Host Data Input/Output Bus
When serial interface mode is selected, D0 will be the serial clock input: SCLK; D1 will be the serial data input: SDIN.
When I2C mode is selected, D2, D1 should be tied together and serve as SDAout, SDAin in application and D0 is the serial clock input, SCL.
12 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.
13 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.
14 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.
15,16 BS0 Communicating Protocol Select
These pins are MCU interface selection input. See the following table:
  BS0 BS1
I2C 0 1
3-wire SPI 1 0
4-wire SPI 0 0
BS1
17 VLSS Ground of Analog Circuit
This is an analog ground pin. It should be connected to VSS externally.
18 N.C. (GND) Reserved Pin (Supporting Pin)
The supporting pins can reduce the influences from stresses on the function pins. These pins must be connected to external ground.

Mechanical Data

Item Dimension Unit
Dot Matrix 128 × 32 Dots
Module dimension 50.50 × 15.75 × 2.01 mm
Active Area 42.22 × 10.54 mm
Pixel Size 0.308 × 0.308 mm
Pixel Pitch 0.33 × 0.33 mm
Display Mode Passive Matrix
Display Color Monochrome
Drive Duty 1/32 Duty
IC SSD1307ZD
Interface SPI, I2C
Size 1.71 inch

Electronical 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 11.5 12.0 12.5 V
High Level Input VIH 0.8×VDD V
Low Level Input VIL 0 0.2×VDD V
High Level Output VOH 0.9×VDD V
Low Level Output VOL 0.1×VDD V
Operating Current for VCC (Full ON) ICC VCC=12.0V 14.5 19.0 mA

Absolute Maximum Ratings

Parameter Symbol Min Max Unit
Supply Voltage for Logic VDD -0.3 4.0 V
Supply Voltage for Display VCC 0 16.0 V
Operating Temperature TOP -40 +80 °C
Storage Temperature TSTG -40 +85 °C

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