128×64 COG Graphic STN LCD Display (ST7567A IC)

Model No. WO12864L

COG LCD
Graphic LCD
Display Format : 128×64
IC: ST7567A
3V power supply
1/65 duty cycle, 1/9 bias
Interface : SPI / I2C

Category: COG LCD

Description

WO12864L is a monochrome COG graphic LCD module made of 128×64 dots matrix. This COG WO12864L module is built in with ST7567A controller IC; it supports SPI and I2C interface. WO12864L module is having the same module dimension, AA and VA sizes as WO12864A1, but with different controller IC and interface. The users can use PIN 2 (SI2) to select I2C or SPI interface directly. This module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. The WO12864L is available for FSTN Positive Transflective with white LED backlight, if customers require different LCD type and LED combination, please contact us.

The advantage of WO12864L is having the peripheral circuit design optimization. Below is the comparison of circuit designs of WO12864L and WO12864A1. For new designs, WO12864L is a better choice.

WO12864L-TFH#	WO12864A1-TFH#

Drawing

Data source ref: WO12864L-TFH#

Interface Pin Function

Pin No.

Symbol

Description

ESD

SI2

SI2 selects the interface type: I2C serial interface or not

SI2	Selected Interface
“L”	Serial 4-Line SPI Interface
“H”	I2C Serial Interface

VG is the LCD driving voltage for segment circuits

XV0

XV0 is the LCD driving voltage for common circuits at positive frame.

V0 is the LCD driving voltage for common circuits at negative frame.

VSS

GROUND

VDD

POWER

SDA

D[1:3] must be connected together as SDA.
D[4:7]=(1,1,1,1): ID Pin. D[4:7] should fix to “H” or “L” by VDDH or
VSSL.

SCL

It determines whether the access is related to data or command.
A0=“H” : Indicates that signals on D[7:0] are display data.
A0=“L” : Indicates that signals on D[7:0] are command.

RSTB

Hardware reset input pin. When RSTB is “L”, internal initialization is executed and the internal registers will be initialized.

CSB

Chip select input pin. Interface access is enabled when CSB is “L”.
When CSB is non-active (CSB=“H”), D[7:0] pins are high impedance.

ESD

Mechanical Data

Item	Dimension	Unit
Number of dots	128 x 64	—
Module dimension	60.10 x 44.50 x 5.01(Max)	mm
View area	54.6 x 32.0	mm
Active area	49.89 x 27.49	mm
Dot size	0.36 x 0.40	mm
Dot pitch	0.39 x 0.43	mm
Drive Method	1/65 DUTY, 1/9BIAS
Backlight Type	LED
IC	ST7567A (SPI & I2C)

Absolute Maximum Ratings

Item	Symbol	Min	Typ	Max	Unit
Operating Temperature	TOP	-20	－	+70	℃
Storage Temperature	TST	-30	－	+80	℃
Input Voltage	VI	-0.3	－	VDD+0.3	V
Digital Power Supply Voltage	VDD-Vss	-0.3	－	4.0	V
LCD Power supply voltage	V0-XV0	-0.3	－	18.0	V

Electrical Characteristics

Item	Symbol	Condition	Min	Typ	Max	Unit
Supply Voltage For Logic	VDD-VSS	－	2.9	3.0	3.1	V
Supply Voltage For LCD *Note	VOP	Ta=-20℃ Ta=25℃ Ta=70℃	－ 9.3 －	－ 9.5 －	－ 9.7 －	V V V
Input High Volt.	VIH	－	0.7VDD	－	VDD	V
Input Low Volt.	VIL	－	VSS	－	0.3VDD	V
Supply Current	IDD	－			2.0	mA

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