1.71 inch 128×32 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
IC：CH1115
3V Power supply
1/32 duty
Interface: SPI, I2C
Display Color: White / Yellow

Categories: Graphic OLED Display, OLED Module

Description

WEO012832P is a 1.71-inch COG small OLED display module that is made of 128×32 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℃.

Drawing

Data source ref: WEO012832PWAP3N00000

SPECIFICATIONS

Interface Pin Function

No.

Symbol

Function

ESD_GND

ESD Ground pin

VPP

OLED panel power supply.

VSS

This is a ground pin.

VSS

This is a ground pin.

VDD

Power Supply for Logic

__
CS

This pad is the chip select input. When /CS = “L”, then the chip select becomes active, and data/command I/O is enabled.

___
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.

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.

SCL

The serial clock input pad

SI/SDA

The serial data input pad

Dummy Pin

IREF

This is a segment current reference pad. A resistor should be connected between this pad and VSS. Set the current at 18.75μA.

VCOMH

The pin is for COM signal deselected voltage level.
A capacitor should be connected between this pin and VSS.

VPP

OLED panel power supply.

IM0

These are the MPU interface mode select pads.

	3SPI	4SPI	I2C
IM0	1	0	0
IM1	0	0	1

IM1

VSS

This is a ground pin.

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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