0.91 inch 128×32 Graphic COG OLED Display Module (SH1106)

Model No. WEO012832R

Type: Graphic
Structure: COG
Size: 0.91″
128×32 OLED Display
IC：SH1106
3V Power supply
1/32 duty
Interface: I2C
Display Color: Sky Blue, White

Categories: Graphic OLED Display, OLED Module

Description

The WEO012832R series is a popular 0.91-inch COG graphic OLED module in the market. This module features a resolution of 128×32 dots and integrates the SH1106 IC, supporting an I2C interface. The IC also facilitates internal power boost and external power supply. With outline dimensions of 30.0 × 11.5 mm and an active area of 22.384 × 5.584 mm, the module is very lightweight due to its COG structure, measuring just 1.26 mm in thickness.

The logic power supply voltage ranges from 1.65V to 3.3V, with a typical value of 3.0V, and operates with a duty cycle of 1/32. Additionally, the module features a wide temperature range, reliably operating from -40℃ to +80℃, with a storage temperature range of -40℃ to +85℃.

This module is particularly suitable for various applications requiring compact and lightweight OLED displays. It is ideal for integrating into devices such as voice recorder, charging cables with embedded OLED displays and keychain lights featuring OLED displays, where space and visual clarity are paramount.

0.91" COG OLED Module - WEO012832R - Perfect for Miniature Devices Requiring Clear Displays

Drawing

0.91 inch 128x32 Graphic COG OLED Display Module (SH1106) - WEO012832R

Data source ref:WEO012832RSPP3N00000

SPECIFICATIONS

Interface Pin Function

No.	Symbol	Function
1	C1N	Connect to charge pump capacitor. These pins are not used and should be disconnected when Vpp is supplied externally.
2	C1P
3	C2P
4	C2N
5	VDD2	Power supply pad for Power supply for charge pump circuit. This pin should be disconnected when VPP is supplied externally
6	NC	No connection
7	VSS	Ground.
8	VDD1	Power supply input
9	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.
10	SCL	When the I2C interface is selected, D0 serves as the serial clock input pad (SCL) and D1 serves as the serial data input pad (SDAI).
11	SDA
12	IREF	This is a segment current reference pad. A resistor should be connected between this pad and VSS. Set the current at 18.75uA.
13	VCOMH	This is a pad for the voltage output high level for common signals. A capacitor should be connected between this pad and VSS.
14	VPP	OLED panel power supply. Generated by internal charge pump. Connect to capacitor. It could be supplied externally.

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	SH1106
Interface	I2C
Size	0.91 inch

Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Unit
Supply Voltage for Logic	VDD1	-0.3	3.6	V
Power supply for charge pump circuit	VDD2	-0.3	4.8	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

DC Electrical Characteristics

Item	Symbol	Condition	Min	Typ	Max	Unit
Supply Voltage for Logic	VDD1	－	1.65	3.0	3.3	V
Supply Voltage for Display (Supplied Externally)	VPP	－	6.4	7.25	8	V
Charge Pump Regulator Supply Voltage	VDD2	－	2.9	－	4.2	V
Charge Pump Output Voltage for Display (Generated by Internal DC/DC)	Charge Pump VPP	－	7.0	7.4	－	V
Input High Volt.	VIH	－	0.8×VDD1	－	VDD1	V
Input Low Volt.	VIL	－	VSS	－	0.2×VDD1	V
Output High Volt.	VOH	－	0.8×VDD1	－	VDD1	V
Output Low Volt.	VOL	－	VSS	－	0.2×VDD1	V
Operating Current for VPP (VPP Supplied Externally)	IPP	VPP =7.25V	－	8	12	mA
Display 50% Pixel on (VPP Generated by Internal DC/DC)	IDD2	－	－	15	25	mA

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