Circular LCD Screen, Circular LCD Display Module 128x128
Model No. WO128128A
►COG LCD Display
►Graphic LCD
►128×128 dots
►IC: ST75161
►+3.3V power supply
►1/136 duty cycle
►Interface : 6800/8080/SPI/I2C
Description
The WO128128A is a COG monochrome graphic circular LCD display module with a 128x128 dot matrix format. This Circular LCD screen display module is equipped with the ST75161 IC and supports 8080/6800 parallel, 3-wire and 4-wire serial SPI, and I2C interfaces. The viewing direction is set at 6 o'clock, with a 1/136 driving duty and 1/12 BIAS.
The logic supply voltage for the WO128128A is in the range of 2.7V to 3.3V, with a typical value of 3V. This circular LCD screen module can operate within temperatures ranging from -20℃ to +70℃, and its storage temperatures range from -30℃ to +80℃.
The WO128128A is available in two variants: FSTN Negative (WO128128A-TDI) and FSTN positive LCD type with white LED backlight (WO128128A-TFH). USB demo kits are currently available, and interested parties are encouraged to contact us for USB sampling or a quotation.
Demo kit P/N: WWSTNUSBDEMO-00 for WO128128A-TFH LCD module
Demo kit P/N: WWSTNUSBDEMO-01 for WO128128A-TDI LCD module
DRAWING
Data source ref: WO128128A-TFH#SPECIFICATIONS
Interface Pin Function
Pin No. | SYMBOL | Function |
---|---|---|
1 | VG | VG is the power of SEG-drivers. |
2 | V0 | Positive operating voltage of COM-drivers. |
3 | XV0 | Negative operating voltage of COM-drivers. |
4 | CA1P | DC/DC voltage converter |
5 | CA1N | |
6 | VDD | Power supply |
7 | VSS | Ground |
8 | COMSCN | Set scan direction of COM. |
9 | IF2 | These pins select interface operation mode. |
10 | IF1 | |
11 | IF0 | |
12 | CSB | Chip select input pin. |
13 | A0 | It determines whether the access is related to data or command. |
14 | ERD | Read / Write execution control pin. |
15 | RWR | Read / Write execution control pin. |
16 | RSTB | Hardware reset input pin |
17-24 | D0-D7 | When using 8-bit parallel interface: 8080 or 6800 mode:8 bit bi-directional data bus When using serial interface : 4-line SPI or 3-line SPI mode D[7:4] : fix to “H” by VDD1. D[3:1] : serial input/output data (SDA). D[0] : serial input clock (SCL). D1 to D3 must be connected together (SDA) When using serial interface : I2C interface D[7] : SA[1], I2C slave address bit. Must be connected to VDD1 or VSS1. D[6] : SA[0], I2C slave address bit. Must be connected to VDD1 or VSS1. D[5:4] : fix to “H” by VDD1. D[3:2] : SDA_OUT, serial data and acknowledge output for the I2C interface. D[1] : SDA_IN, serial input data D[0] : SCL, serial input clock . D1 to D3 must be connected together (SDA) CSB must be fixed to “L” by VSS1. |
25 | A | Anode input for LED backlight. |
26 | K | Cathode input for LED backlight |
Mechanical Data
Item | Dimension | Unit |
---|---|---|
Number of dots | 128 x 128 | - |
Module dimension | 55.0 x 57.0 x 6.18 | mm |
View area | 42.0 x 42.0 | mm |
Active area | 44.0 x 44.0 | mm |
Dot size | 0.308 x 0.308 | mm |
Dot pitch | 0.328 x 0.328 | mm |
Duty | 1/136 DUTY,1/12 BIAS | |
Backlight Type | LED | |
IC | ST75161 | |
Interface | 68/80/4-Line SPI/I2C/9-bit 3-line serial interface |
Absolute Maximum Ratings
Item | Symbol | Min | Typ | Max | Unit |
---|---|---|---|---|---|
Operating Temperature | TOP | -20 | - | +70 | ℃ |
Storage Temperature | TST | -30 | - | +80 | ℃ |
Power Supply Voltage | VDD | -0.3 | - | 4.0 | V |
LCD Power supply voltage | VLCD | -0.3 | - | 20 | V |
LCD Power supply voltage | V0-XV0 | -0.3 | - | 19 | V |
Input voltage | VIN | -0.3 | VDD+0.3 | V |
Electrical Characteristics
Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
---|---|---|---|---|---|---|
Supply Voltage For Logic | VDD-VSS | - | 2.7 | 3.0 | 3.3 | V |
Supply Voltage For LCD | VOP | Ta=-20℃ Ta=25℃ Ta=70℃ |
- 13.7 - |
- 14.0 - |
- 14.3 - |
V V V |
Input High Volt. | VIH | - | 0.7 VDD | - | VDD | V |
Input Low Volt. | VIL | - | Vss | - | 0.3 VDD | V |
Output High Volt. | VOH | - | 0.8 VDD | - | VDD | V |
Output Low Volt. | VOL | - | Vss | - | 0.2 VDD | V |
Supply Current | IDD | VDD=3.0V | - | - | 2.0 | mA |
Search Keyword: lcd display 128x128, lcd 128x128, 128x128 lcd display