Square OLED Display, Square Display 1.5 128x128, Display Square, REX128128H
Square OLED Display, Square Display 1.5 128x128, Display Square, REX128128H
Square OLED Display, Square Display 1.5 128x128, Display Square, REX128128H

Square OLED Display, Square Display 1.5" 128x128

Model No. REX128128H

The diagonal size of this square OLED display is 1.5 inch with module dimension 33.8×36.5 mm, resolution of 128x128 pixels. The structure of this square OLED display is COG with built-in IC CH1120, supporting 4 bits grayscale, and boasts high contrast ratio 10,000 : 1. REX128128H square display module has options of interface for customers to choose from, including 8080, SPI and I2C.

Logic supply voltage ranges from 1.65V-3.3V, the typical value is 3.0V. The module works within temperature from -40~80°C; storage temperature range is -40~+85°C. OLED display doesn’t require backlight since it emits light itself which allows OLED display to be thin & lightweight, high contrast ratio and low power consumption. The available emitting color is white and Yellow. ★Support Grayscale

Data source ref: REX128128HWAP3N00000

Inquiry or Demo Code Datasheet Back Previous Next
  • General Specs
  • Interface Pin Function
  • Contour Drawing
  • Absolute Maximum Ratings
  • Electrical Characteristics
  • Video
Item Dimension Unit
Structure COG
Size (Diagonal) 1.5 inch
Dot Matrix / Resolution 128 × 128 dots
Module Dimension 33.8 × 36.5 × 2.01 mm
Viewing Area 28.86 × 28.86 mm
Active Area 26.86 × 26.86 mm
Dot / Pixel Size 0.185 × 0.185 mm
Dot / Pixel Pitch 0.21 × 0.21 mm
Emitting Color White / Yellow
Support Grayscale Yes
Display Mode Passive Matrix
Gray Scale 4 bits
IC CH1120
Interface 8080 / SPI / I2C
Power Supply 3V
Duty 1/128 duty
Operating Temperature -40~+80 °C
Storage Temperature -40~+85 °C
Polarizer Type Polarizer optional
Type OLED Graphic Display, Square OLED Display
No. Symbol Function
1 ESD_GND This pin should be connected to GND.
2 VPP This is the most positive voltage supply pin of the chip.
It should be supplied externally.
3 VCOMH This is a pin for the voltage output high level for common signals.
A capacitor should be connected between this pin and GND.
4 VDD Power supply for logic
5 NC No connection
6 IM1 These are the MPU interface mode select pins.
  8080 3-wire SPI 4-wire SPI I2C
IM1 1 0 0 1
IM2 1 1 0 0
These pins must be connected to “H” or “L”.
7 IM2
8 VSS Ground for logic and analog. This pin should be connected to GND externally.
9 IREF This is a segment current reference pin.
A resistor should be connected between this pin and GND.
10 CSB This pin is the chip select input. When CSB = “L”, then the chip select becomes active, and data/command I/O is enabled.
When in I2C interface, this pin is not used, so it must be connected to “L”.
11 RESB This is a reset signal input pin. When RESB is set to “L”, the settings are initialized. The reset operation is performed by the RESB signal level.
This pin internal pull high.
12 A0 This is the Data/Command control pin that determines whether the data bits are data or a command.
A0 = “H”: the inputs at D0 to D7 are treated as display data.
A0 = “L”: the inputs at D0 to D7 are transferred to the command registers.
In I2C interface, this pin serves as SA0 to distinguish the different address of OLED driver.
When in 3-wire interface, this pin is not used, so it must be connected to “L”.
13 WRB This is a MPU interface input pin.
When connected to an 8080 MPU, this is active LOW. This pin connects to the 8080 MPU WR signal. The signals on the data bus are latched at the rising edge of the WR signal.
When in 3-wire.4-wire & I2C interface, this pin is not used, so it must be connected to “L”.
14 RDB This is a MPU interface input pin.
When connected to an 8080 series MPU, it is active LOW. This pin is connected to the RD signal of the 8080 series MPU, and the data bus is in an output status when this signal is “L”.
When in 3-wire.4-wire & I2C interface, this pin is not used, so it must be connected to “L”.
15 D0 This is an 8-bit bi-directional data bus that connects to an 8-bit or 16-bit standard MPU data bus.
When the serial interface(SPI) and I2C is selected, then D0 serves as the serial clock input pin (SCL) and D1 serves as the serial data input pin (SI). At this time, D2 to D7 are set to high impedance. D7~D2 is recommended to connect the VDD or GND. It is also allowed to leave D7~D2 unconnected.
16 D1
17 D2
18 D3
19 D4
20 D5
21 D6
22 D7
23 VPP This is the most positive voltage supply pin of the chip.
It should be supplied externally.
24 ESD_GND This pin should be connected to GND.

Square OLED Display, Square Display 1.5 128x128, Display Square, REX128128H

Parameter Symbol Min Max Unit
Supply Voltage for Logic VDD -0.3 3.5 V
Supply Voltage for Display VPP -0.3 15.0 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 VPP － 8.0 12.0 12.5 V
High Level Input VIH － 0.8×VDD － VDD V
Low Level Input VIL － GND － 0.2×VDD V
High Level Output VOH － 0.8×VDD － VDD V
Low Level Output VOL － GND － 0.1×VDD V
Display 50% Pixel on IPP VPP =12V － 20 30 mA

[REX128128H] Square OLED Display

Related Products

Top