Home Products COG LCD WO12864L

128x64 COG Graphic STN LCD Display (ST7567A IC)

Model No. WO12864L

►COG LCD
►Graphic LCD
►Display Format : 128x64
►Built-in controller ST7567A
►3V power supply
►1/65 duty cycle, 1/9 bias
►Interface : SPI / I2C

DESCRIPTION

WO12864L is a monochrome COG graphic LCD module made of 128x64 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#
WO12864L-TFH Pin WO12864A1-TFH Pin

DRAWING

128x64 COG Graphic STN LCD Display (ST7567A IC) - WO12864L

SPECIFICATIONS

Interface Pin Function

Pin No. Symbol Description
1 ESD ESD
2 SI2 These pins select the displey duty and bias of ST7567A
SEL2 SEL1 Duty Bias
"L" "L" 1/65 1/9 or 1/7
"L" "H" 1/49 1/8 or 1/6
"H" "L" 1/33 1/6 or 1/5
"H" "H" 1/55 1/8 or 1/6
3 VG VG is the LCD driving voltage for segment circuits
4 XV0 XV0 is the LCD driving voltage for common circuits at positive frame.
5 V0 V0 is the LCD driving voltage for common circuits at negative frame.
6 VSS GROUND
7 VDD POWER
8 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.
9 SCL
10 A0 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.
11 RSTB Hardware reset input pin. When RSTB is “L”, internal initialization is executed and the internal registers will be initialized.
12 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.
13 ESD 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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