Home Products COG LCD WO240128B2

Chip on Glass LCD Module 240x128 with PCB

Model No. WO240128B2

►COG LCD
►Graphic LCD
►240 x 128 dots
►Built-in controller ST7586S
►3.3V power supply
►1/128 duty cycle
►Interface : Default 6800, Option 8080, SPI-4 Line/SPI-3Line 9bit

DESCRIPTION

WO240128B2 model is a COG LCD display WO240128B model with a PCB board on module, which is made of 240x128 dots. WO240128B2 is built in with ST7586S controller IC; it supports 6800 8-bit (default), 8080 8-bit parallel and serial SPI interface, power supply voltage 3.3V, 1/128 duty, 1/12 Bias. The advantage of WO240128B2 is having circuit layout on PCB board and with screw holes which make modules can be fixed on customers’ applications easily. Also, there are three kinds of connector pitch sizes of 2.54mm (default), 1.0mm and 0.5mm for options. WO240128B2 also have VDD 5V power supply voltage for optional.

This WO240128B2 module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. The WO240128B2 is available for FSTN positive Transflective with white LED backlight. Please contact us if you need different types of LCDs or LED combinations.

DRAWING

Chip on Glass  LCD Module 240x128 with PCB - WO240128B2

SPECIFICATIONS

Interface Pin Function

Pin No. Symbol Description
1 VDD Power supply
2 NC No connection
3 VSS Ground
4 CSB Chip select input pin
CSB=“L”: This chip is selected and the MPU interface is active
CSB=“H”: This chip is not selected and the MPU interface is disabled
(D[7:0] are high impedance)
5 RSTB Reset input pin. When RSTB is “L”, internal initialization procedure is executed
6 /RD(E) Read / Write execution control pin. (This pin is only used in parallelinterface)
MPU Type ERD Description
6800-series E Read/Write control input pin.
R/W = "H": When E is "H", data bus is in output status.
R/W = "L": The data are latched at the falling edge of the E signal.
8080-series /RD Read enable input pin.
When /RD is "L", data bus is in out put status.
This pin is not used in serial interfaces and should be connected to VDD1
7~14 D7~D0 The bi-directional data bus of the MPU interface. When CSB is “H”, they are high impedance
If using serial interface:
D0 is the SDA signal in 4-Line & 3-Line interface
D1 is the A0 signal in 4-Line interface
15 /WR/(R/W) Read / Write execution control pin. (This pin is only used in parallel interface)
MPU Type ERD Description
6800-series R/W Read/Write control input pin.
R/W = "H": read
R/W = "L": write
8080-series /WR Read enable input pin.
The data are latched at the rising edge of the /WR signal.
This pin is not used in serial interfaces and should be connected to VDD1
16 A0(SCL) The function of this pin is different in parallel and serial interface
In parallel interface: A0 is register selection input
A0 = "H": inputs on data bus are display data
A0 = "L": inputs on data bus are command
In serial interface: this pad will be used as SCL (serial-clock) input
17 A LED+
18 K LED-

Mechanical Data

Item Dimension Unit
Number of dots 240 × 128
Module dimension 140.0 × 84.0 × 9.7 mm
View area 114.0 × 64.0 mm
Active area 107.98 × 57.58 mm
Dot size 0.43 × 0.43 mm
Dot pitch 0.45 × 0.45 mm
Drive Method 1/128 Duty,1/12 Bias
Backlight Type LED
IC ST7586S

Absolute Maximum Ratings

Item Symbol Min Typ Max Unit
Operating Temperature TOP -20 +70
Storage Temperature TST -30 +80
Digital Power Supply Voltage VDDI -0.3 3.6 V
Analog Power supply voltage VDDA -0.3 3.6 V
LCD Power supply voltage V0-XV0 -0.3 19 V
LCD Power supply voltage VG -0.3 5.5 V

Electrical Characteristics

Item Symbol Condition Min Typ Max Unit
Supply Voltage For Logic VDD-VSS 3.0 3.3 3.6 V
Supply Voltage For LCM VOP Ta=-20℃
Ta=25℃
Ta=+70℃

14.8

15.0

15.2
V
V
V
Input High Volt. VIH 0.7VDD 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 0.2VDD V
Supply Current IDD VDD=3.3V 2.0 4.0 mA

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