1.18″ 128×128 Round OLED Display Module with Touch Screen

Model No. WEO128128D-CTP

  • Type: Graphic
  • Structure: COG
  • Size: 1.18 inch
  • 128 x 128 Dot Matrix
  • IC：SSD1327
  • 3V Power supply
  • 1/128 duty
  • Interface: SPI, I2C
  • With Capacitive Touch Screen (CTP)
  • Detect Point : 1 Finger
  • Display Color: White / Yellow
  • Support Grayscale
Categories: ,

Description

WEO128128D-CTP, a Ø1.18”round graphic OLED display, comes with a capacitive touch screen integrated into the module, boasting a resolution of 128×128 dots. The module is equipped with the SSD1327 IC, supporting a 4-line SPI and I2C interface, with a typical logic supply voltage of 3V and a 1/128 driving duty. Additionally, the WEO128128D-CTP model includes the FT3268 touch panel IC integrated into the module, supporting the I2C interface and featuring a single detect point for the capacitive touch screen.

This round OLED WEO128128D with CTP model is well-suited for smart home applications, intelligent technology devices, energy systems, communication systems, medical instruments, and more. Sporting a high contrast ratio of 10,000:1 and an expansive viewing angle of up to 160°, this OLED module ensures clearer display images. The module is designed to operate within temperatures ranging from -20℃ to +70℃, with storage temperatures ranging from -30℃ to +70℃.

 

Drawing

Drawing

1.18" 128x128 Round OLED Display Module with Touch Screen - WEO128128D-CTP

Data source ref: WEO128128DWPP3D00003

SPECIFICATIONS

SPECIFICATIONS

Interface Pin Function

No. Symbol Function
1 VSS Ground pin. It must be connected to external ground.
2 VCC Power supply for panel driving voltage. This is also the most positive power voltage supply pin. It is supplied by external high voltage source.
3 VCOMH COM signal deselected voltage level.
A capacitor should be connected between this pin and VSS. No external power supply is allowed to connect to this pin.
4 VCI Low voltage power supply and power supply for interface logic level. It should match with the MCU interface voltage level and must be connected to external source.
VCI must always set to be equivalent to or higher than VDD.
5 VDD Power supply pin for core logic operation.
VDD can be supplied externally (within the range of 2.4V to 2.6V) or regulated
Internally from VCI. A capacitor should be connected between VDD and VSS under all circumstances.
6 BS1 MCU bus interface selection pins. Select appropriate logic setting as described in the following table. BS1 is pin select.
Bus Interface selection

BS1 Interface
0 4-line SPI
1 I2C

Note  (1) 0 is connected to VSS  (2) 1 is connected to VCI
7 IREF This pin is the segment output current reference pin
8 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).
9 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.
10 DC# This pin is Data/Command control pin connecting to the MCU.
When the pin is pulled HIGH, will be interpreted as data.
When the pin is pulled LOW, will be transferred to a command register
In I2C mode, this pin acts as SA0 for slave address selection.
11 D0 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.
12 D1
13 D2
14 TP_SCK I2C clock signal
15 TP_SDA I2C data signal
16 TP_INT Interrupt signal
17 VCC Power supply for panel driving voltage. This is also the most positive power voltage supply pin.
18 VSS Ground

Mechanical Data

Mechanical Data

Item Dimension Unit
Dot Matrix 128 × 128 Dots
Module dimension Ø50.5 × 5.0 mm
Active Area Ø30.0 mm
Pixel Size 0.210 × 0.210 mm
Pixel Pitch 0.235 × 0.235 mm
Display Mode Passive Matrix
Display Color Monochrome
Drive Duty 1/128Duty
Gray Scale 4 bits
IC SSD1327
Interface 4-line SPI , I2C
Size 1.18 inch

 

CTP IC FT3268
Detect Point 1
CTP Interface I2C

Absolute Maximum Ratings

Absolute Maximum Ratings

Parameter Symbol Min Max Unit
Supply Voltage for Operation VCI -0.3 3.6 V
Supply Voltage for Logic VDD -0.5 2.75 V
Supply Voltage for Display VCC -0.5 19.0 V
Operating Temperature TOP -20 +70 °C
Storage Temperature TSTG -30 +70 °C

 

Electronical Characteristics

Electronical Characteristics

DC Electrical Characteristics

Item Symbol Condition Min Typ Max Unit
Supply Voltage for Operation VCI － 2.8 3.0 3.3 V
Supply Voltage for Display VCC － 8.0 14.5 15.0 V
Supply Voltage for Logic VDD － 1.65 － 2.6 V
High Level Input VIH － 0.8×VCI － VCI V
Low Level Input VIL － 0 － 0.2×VCI V
High Level Output VOH Iout = 100uA 0.9×VCI － VCI V
Low Level Output VOL Iout = 100uA 0 － 0.1×VCI V
50% Check Board operating Current VCC =14.5V － 15 30 mA

 

Touch Panel Controller FT3268

Item Symbol Condition Min Typ Max Unit
Input High Volt. VIH － 0.7×VDD － VDD V
Input Low Volt. VIL － -0.3 － 0.3×VDD V
Output High Volt. VOH IOH = 0.1mA 0.7×VDD － － V
Output Low Volt. VOL IOL = 0.1mA － － 0.3×VDD V

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