Home Products OLED Module Graphic OLED Display WEO012832P

1.71 inch 128x32 COG Graphic OLED Module

Model No. WEO012832P

►Small OLED Display, Smallest OLED
►Suitable for wearable device
►Type: Graphic
►Structure: COG
►Size: 1.71 inch
►128 x 32 Dot Matrix
►3V Power supply
►1/32 duty
►Interface: SPI, I2C
►Display Color: White / Yellow


WEO012832P is a 1.71-inch COG small OLED display module that is made of 128x32 dots. This module is built in with CH1115 IC; it supports I2C and SPI interface, 3V power supply, 1/32 driving duty, the supply voltage of logic is 3.0V (VDD), and the current with 50% checkerboard display is 5mA @ 12V VCC (for white color). The WEO012832P model is an IC alternative solution to the WEO012832G model; the mechanical size and PFC pin definition are the same. For more details, please check the datasheet.

The WEO012832P is a COG structure OLED display that is ultra-thin and has no need for backlight; it's lightweight and has low power consumption. This 1.71-inch small OLED module is suitable for smart home applications, portable devices, health devices, testing instruments, etc. WEO012832P can be operated at temperatures from -40℃ to +80℃; its storage temperatures range from -40℃ to +85℃.




Data source ref: WEO012832PWAP3N00000


Interface Pin Function

No. Symbol Function
1 ESD_GND ESD Ground pin
2 VPP OLED panel power supply.
3 VSS This is a ground pin.
4 VSS This is a ground pin.
5 VDD Power Supply for Logic
6 __
This pad is the chip select input. When /CS = “L”, then the chip select becomes active, and data/command I/O is enabled.
7 ___
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.
8 A0 This is the Data/Command control pad that determines whether the data bits are data or a command.
In I2C interface, this pad serves as SA0 to distinguish the different address of OLED driver.
9 SCL The serial clock input pad
10 SI/SDA The serial data input pad
11 NC Dummy Pin
12 IREF This is a segment current reference pad. A resistor should be connected between this pad and VSS. Set the current at 18.75μA.
13 VCOMH The pin is for COM signal deselected voltage level.
A capacitor should be connected between this pin and VSS.
14 VPP OLED panel power supply.
15 IM0 These are the MPU interface mode select pads.
IM0 1 0 0
IM1 0 0 1
16 IM1
17 VSS This is a ground pin.
18 ESD_GND ESD Ground pin

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 CH1115
Interface SPI, I2C
Size 1.71 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 14.5 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 6.4 12.0 12.5 V
High Level Input VIH 0.8×VDD VDD V
Low Level Input VIL VSS 0.2×VDD V
High Level Output VOH 0.8×VDD VDD V
Low Level Output VOL VSS 0.2×VDD V
Display 50% Pixel on IPP VPP=12V 5 10 mA

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