Chip on Glass LCD Module 240×128 with PCB

Model No. WO240128B2

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

Category: COG LCD

Description

The WO240128B2 model is a COG LCD display, an enhanced version of the WO240128B model, featuring a PCB board on the module and a resolution of 240×128 dots. The module has dimensions of 140.0 × 84.0 mm, with an active area size measuring 107.98 × 57.58 mm. It incorporates the ST7586S controller IC, supporting a default 6800 8-bit interface, with optional 8080 8-bit parallel and serial SPI interfaces. The power supply voltage is 3.3V, and it operates with a 1/128 duty and 1/12 bias.

The WO240128B2 offers the advantage of a circuit layout on the PCB board, along with screw holes for easy integration into customers’ applications. Additionally, it provides flexibility with three connector pitch sizes: 2.54mm (default), 1.0mm, and 0.5mm. There’s also the option for a VDD 5V power supply voltage.

This module is designed to operate within a temperature range of -20℃ to +70℃, with storage temperatures ranging from -30℃ to +80℃. Its versatility makes it suitable for various applications, including home appliances, control systems, industrial devices, and testing equipment.

The WO240128B2 is equipped with FSTN positive Transflective technology and features a white LED backlight. For different LCD types or LED combinations, please feel free to contact us.

If you have any further questions or need additional information, please don’t hesitate to ask.

Drawing

Data source ref: WO240128B2-TFH#

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	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.
7~14	D7~D0	The bi-directional data bus of the MPU interface. When CSB is “H”, they are high impedance
15	R/W	Read / Write control input pin R/W = “H” : read R/W = “L” : write
16	A0	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
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
Interface	6800

Absolute Maximum Ratings

Item	Symbol	Min	Typ	Max	Unit
Operating Temperature	T_OP	-20	－	+70	℃
Storage Temperature	T_ST	-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	V_DD-V_SS	－	3.0	3.3	3.6	V
Supply Voltage For LCM	V_OP	Ta=-20℃ Ta=25℃ Ta=+70℃	－ 14.8 －	－ 15.0 －	－ 15.2 －	V V V
Input High Volt.	V_IH	－	0.7V_DD	－	V_DD	V
Input Low Volt.	V_IL	－	V_SS	－	0.3 V_DD	V
Output High Volt.	V_OH	－	0.8 V_DD	－	V_DD	V
Output Low Volt.	V_OL	－	V_SS	－	0.2V_DD	V
Supply Current	I_DD	V_DD=3.3V	－	2.0	4.0	mA

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