0.91-inch 128x32 OLED Display Module,OLED 128x32 Screen - REX012832R

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

Model No. REX012832R

The REX012832R is a 0.91-inch OLED 128x32 COG passive matrix display module. It adopts a COG (Chip-on-Glass) structure, integrating the SH1106 controller IC directly onto the glass substrate for a compact and reliable design. The 128x32 OLED display communicates via I2C interface and features compact dimensions of 30.0 × 11.5 × 1.26 mm, making it ideal for handheld instruments, meters, and space-constrained embedded systems.

Built for durability and energy efficiency, the 128x32 OLED screen supports both internal charge pump and external VPP power supply options. It operates reliably across a wide temperature range of -40°C to +80°C, with low current consumption suitable for battery-powered or energy-conscious applications.

If you need technical support or product quotes for the REX012832R or other 128x32 OLED display modules, please feel free to contact our sales team!

Data source ref: REX012832RSPP3N00000

Inquiry or Demo Code Datasheet Back Previous Next

General Specs
Interface Pin Function
Contour Drawing
Absolute Maximum Ratings
Electrical Characteristics

Item	Dimension	Unit
Structure	COG
Size (Diagonal)	0.91	inch
Dot Matrix / Resolution	128 × 32	dots
Module Dimension	30.0 × 11.5 × 1.26	mm
Viewing Area	24.384 × 7.584	mm
Active Area	22.384 × 5.584	mm
Dot / Pixel Size	0.152 × 0.152	mm
Dot / Pixel Pitch	0.175 × 0.175	mm
Emitting Color	OLED, Sky Blue, White
Display Mode	Passive Matrix
IC	SH1106
Interface	I2C
Power Supply	3V
Duty	1/32 duty
Operating Temperature	-40~+80	°C
Storage Temperature	-40~+85	°C
Type	128x32 OLED Graphic Display

REX012832R 128x32 OLED Display for Embedded Applications

Pin Finction for 128x32 OLED Screen

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.

0.91-inch 128x32 OLED Display Module,OLED 128x32 Screen - REX012832R Contour Drawing

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

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