REA012832S - Graphic OLED Display Module - Raystar

0.91-inch COG+PCB Graphic OLED Display Module (CH1120 IC)

Model No. REA012832S

The REA012832S is a 0.91-inch 128×32 COG+PCB Graphic OLED Display Module powered by the CH1120 IC. It features a compact outline of 36.2×21.0×5.36 mm with an active area of 22.38×5.58 mm, delivering crisp, high-contrast monochrome visuals. Supporting a 4-wire SPI interface and 4-bit grayscale display, this module ensures stable data transmission and smooth image performance.

The REA012832S operates reliably within a wide temperature range from -40°C to +80°C, consuming minimal power at a typical 3V supply. Its built-in PCB design simplifies integration, making it an ideal choice for wearable devices, handheld instruments, and compact industrial systems that require efficient and space-saving display solutions.

Discover more about the REA012832S or contact our sales team today to find the ideal display for your next project!

If you need a model with only COG version, you can refer to REX012832S.

Data Source Ref: REA012832SWPP3N00000

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

Item	Dimension	Unit
Structure	COG+PCB
Size (Diagonal)	0.91	inch
Dot Matrix / Resolution	128 × 32	dots
Module Dimension	36.2 × 21.0 × 5.36 (Max)	mm
Viewing Area	24.38 × 7.58	mm
Active Area	22.38 × 5.58	mm
Dot / Pixel Size	0.155 × 0.155	mm
Dot / Pixel Pitch	0.175 × 0.175	mm
Emitting Color	OLED, White
Support Grayscale	Yes
Display Mode	Passive Matrix
Gray Scale	4-bit
IC	CH1120
Interface	4-wire SPI
Touch Panel	No
Power Supply	3V
Duty	1/32 duty
Operating Temperature	-40~+80	°C
Storage Temperature	-40~+85	°C
FPC Options	No
Type	Graphic OLED Display

Pin No.	Symbol	Function
1	GND	GND.
2	VCC	Power supply pin for core logic operation
3	D0	The serial clock input pad.
4	D1	The serial data input pad.
5	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.
6	D/C#	This is the Data/Command control pad that determines whether the data bits are data or a command.
7	CS#	This pad is the chip select input.

REA012832S Contour Drawing - Graphic OLED Display Module - Raystar

Parameter	Symbol	Min	Max	Unit
Supply Voltage for Logic	VCC	-0.3	3.5	V
Operating Temperature	TOP	-40	+80	°C
Storage Temperature	TSTG	-40	+85	°C

DC Electrical Characteristics

Item	Symbol	Condition	Min	Typ	Max	Unit
Supply Voltage for Logic	VCC	－	2.8	3.0	3.3	V
Input High Volt	VIH	－	0.8×VCC	－	VCC	V
Input Low Volt	VIL	－	VSS	－	0.2×VCC	V
Output High Volt	VOH	－	0.8×VCC	－	VCC	V
Output Low Volt	VOL	－	VSS	－	0.2×VCC	V
Display 50% Pixel On	ICC	VCC=3V	－	10.5	16.0	mA