1.51-inch Transparent OLED Display Module - 128x56 SSD1309 IC

1.51-inch Transparent OLED Display Module 128x56 COG Type (SSD1309 IC)

Model No. REX012856A

The REX012856A is a 1.51-inch transparent OLED display module featuring a 128 × 56 transparent OLED display resolution. This small transparent OLED display adopts a transparent panel design that allows displayed information to be overlaid while maintaining background visibility, making it suitable for applications requiring clear data presentation. As a mini transparent OLED display, it integrates the SSD1309 driver IC and supports multiple interface options, including 6800, 8080, 4-wire SPI, and I²C.

Sky Blue is provided as the standard display color, with additional color options such as White, Green, Yellow, Blue, and Red available upon request. This 1.51 OLED transparent display operates with a logic supply voltage range of 1.65 to 3.3 V and a panel driving voltage up to 13.0 V, supporting stable operation in transparent OLED display small form-factor designs. The module is suitable for compact systems requiring a small transparent OLED solution with consistent optical performance.

If you require technical support or product quotations for this 1.51-inch transparent OLED or other transparent OLED display modules, please contact our sales team. We will be pleased to assist with interface selection and integration considerations.

Data Source Ref: REX012856ASNP3N20000

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Datasheet

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

Item	Dimension	Unit
Structure	COG
Size (Diagonal)	1.51	inch
Dot Matrix / Resolution	128 × 56	dots
Module Dimension	42.04 × 27.22 × 1.2	mm
Viewing Area	41.04 × 22.03	mm
Active Area	35.052 ×15.324	mm
Dot / Pixel Size	0.254 × 0.254	mm
Dot / Pixel Pitch	0.274 × 0.274	mm
Emitting Color	OLED, Sky Blue
Support Grayscale	No
Display Mode	Passive Matrix
IC	SSD1309
Interface	6800,8080,4-wire SPI,I2C
Power Supply	3V
Duty	1/56 duty
Operating Temperature	-40~+80	°C
Storage Temperature	-40~+85	°C
Polarizer Type	Polarizer Optional
Type	OLED Graphic Display

6800 / 8080 / SPI / I²C Interface Pin Definition

Pin No.

Symbol

Function

ESD_GND

ESD Ground pin.

VLSS

This is an analog ground pin

VSS

Ground.

No connection

VDD

Power supply pin for core logic operation

BS1

MCU bus interface selection pins. Select appropriate logic setting as described in the following table. BS2 and BS1 are pin select

	BS1	BS2
I2C	1	0
4-wire Serial	0	0
8-bit 68XX Parallel	0	1
8-bit 80XX Parallel	1	1

Note
(1) 0 is connected to VSS
(2) 1 is connected to VDD

BS2

CS#

This pin is the chip select input connecting to the MCU.
The chip is enabled for MCU communication only when CS# is pulled LOW (active LOW).

RES#

This pin is reset signal input.
When the pin is pulled LOW, initialization of the chip is executed.
Keep this pin pull HIGH during normal operation.

D/C#

This pin is Data/Command control pin connecting to the MCU.
When the pin is pulled HIGH, the data at D[7:0] will be interpreted as data.
When the pin is pulled LOW, the data at D[7:0] will be transferred to a command register.
In I2C mode, this pin acts as SA0 for slave address selection.

R/W#

This pin is read / write control input pin connecting to the MCU interface.
When 6800 interface mode is selected, this pin will be used as Read/Write (R/W#) selection input. Read mode will be carried out when this pin is pulled HIGH and write mode when LOW.
When 8080 interface mode is selected, this pin will be the Write (WR#) input. Data write operation is initiated when this pin is pulled LOW and the chip is selected.
When serial or I2C interface is selected, this pin must be connected to VSS.

E/RD#

This pin is MCU interface input.
When 6800 interface mode is selected, this pin will be used as the Enable (E) signal.
Read/write operation is initiated when this pin is pulled HIGH and the chip is selected.
When 8080 interface mode is selected, this pin receives the Read (RD#) signal. Read operation is initiated when this pin is pulled LOW and the chip is selected.
When serial or I2C interface is selected, this pin must be connected to VSS.

13-20

D0~D7

These pins are bi-directional data bus connecting to the MCU data bus.
Unused pins are recommended to tie LOW.
When serial interface mode is selected, D0 will be the serial clock input: SCLK; D1 will be the serial data input: SDIN and D2 should be kept NC.
When I2C mode is selected, D2, D1 should be tied together and serve as SDAout, SDAin in application and D0 is the serial clock input, SCL.

IREF

This pin is the segment output current reference pin.
IREF is supplied externally.
A resistor should be connected between this pin and VSS to maintain the current around 10uA.

VCOMH

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

VCC

Power supply for panel driving voltage. This is also the most positive power voltage supply pin.

ESD_GND

ESD Ground pin.

Transparent OLED Display Module Mechanical Dimensions

1.51-inch Transparent OLED Display Module - REX012856A Contour Drawing - Raystar

Maximum Operating Conditions for Transparent OLED Module

Parameter	Symbol	Min	Max	Unit
Supply Voltage for Logic	VDD	-0.3	4	V
Supply Voltage for Display	VCC	0	17	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	VDD	－	1.65	3.0	3.3	V
Supply Voltage for Display	VCC	－	7.0	12.5	13.0	V
High Level Input	VIH	－	0.8×VDD	－	－	V
Low Level Input	VIL	－	－	－	0.2×VDD	V
High Level Output	VOH	－	0.9×VDD	－	－	V
Low Level Output	VOL	－	－	－	0.1×VDD	V
Display 50% Pixel on	ICC	VCC =12.5V	－	12	18	mA