COG Display

COG Display
128x64 COG LCD Module
Model No. ADG12864A4
►128x64 COG display
►Graphic LCD
►Built-in controller SPLC501C-C
►3.3V power supply
►1/65 Duty, 1/9 Bias
►Interface : 6800/8080/SPI8080-Series Interface MPU

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Product Details

COG Display

128x64 COG LCD Module

Model No. ADG12864A4

►128x64 COG display

►Graphic LCD

►Built-in controller SPLC501C-C

►3.3V power supply

►1/65 Duty, 1/9 Bias

►Interface : 6800/8080/SPI8080-Series Interface MPU

Description of COG display 128X64 --ADG12864A4

ADG12864A4 is a 128x64 COG display monochrome Graphic LCD module. This COG display is built in with SPLC501C-C controller.It supports6800/8080/SPI8080-Series Interface MPU. This COG display is very suitable for the applications that demand more compact package displays.

1. FEATURES

The features of LCD are as follows

* Display mode : STN/Gray, Positive, Reflective

* Color : Display dot : Purple-Black

Background: Gray

* Display Format : 128Dots × 64Dots graphic

* IC : SUNPLUS SPLC501C-C

* Interface Input Data : 8080-Series Interface MPU

* Driving Method : 1/65 Duty, 1/9 Bias

* Viewing Direction : 6 O’clock

* Backlight : N/A

2. MECHANICAL SPECIFICATIONS

Item

Specification

Unit

Module Size

54.0(W) X 109.35(H) X 2.8(T)

mm

Viewing Area

50(W) X 31.5(H)

mm

Effective Display Area

47.96(W) X 28.76(H)

mm

Number of Dots

128 X 64 Dots

-

Dot Size

0.335(W) X 0.41(H)

mm

Dot Pitch

0.375(W) X 0.45(H)

mm

3. ELECTRICAL SPECIFICATIONS
3-1. Absolute Maximum Ratings (Vss=0V)

Item

Symbol

Standard Value

Unit

Min.

Typ.

Max.

Supply Voltage For Logic

VDD

-0.3

-

7.0

V

Supply Voltage For LCD Drive

V0, VOUT

-12

-

+0.3

V

Operating Temp.

TOP

-20

-

+70

°C

Storage Temp.

TST

-30

-

+80

°C

Static Electricity

Be sue that you are ground when handing LCM

4. Interface Pin Function

Pin NO.

Symbol

I / O

Functions

1

/CS1

I

This is the chip select signal.

2

/RES

I

When RES is set to “L”, the setting are initialized.

3

A0

I

This is connect to the least significant bit of the Norman MPU address bus, and it determines whether the data bits are data or a command.

4

/WR

I

The data bus are latched at the rising edge of the WR signal

5

/RD

I

The data bus is in output status when this signal is “L”

6~13

D0~ D7

I/O

This is an 8-bit bi-directional data bus that connects to an 8-bit or 16-bit standard MPU data bus.

14

VDD

Power Supply

Power supply

15

VSS

Power Supply

Ground

16

VOUT

O

DC/DC voltage converter. Connect a capacitor between this terminal and vss or VDD

17

CAP3P

O

DC/DC voltage converter. Connect a capacitor between this terminal and the CAP1N terminal.

18

CAP1N

O

DC/DC voltage converter. Connect a capacitor between this terminal and the CAP1P terminal.

19

CAP1P

O

DC/DC voltage converter. Connect a capacitor between this terminal and the CAP1N terminal.

20

CAP2P

O

DC/DC voltage converter. Connect a capacitor between this terminal and the CAP2N terminal.

21

CAP2N

O

DC/DC voltage converter. Connect a capacitor between this terminal and the CAP2P terminal.

22~26

V5~ V1

Power Supply

This is a multi-level power supply for the liquid crystal drive.

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图片16_副本.png

FAQ:

1.What is COG display ?

COG stands for chip-on-glass technology in reference to displays. The driver IC in this construction form is applied directly onto the glass and generates the necessary multiplex rates and bias voltages for the segment/pixel drive. Thereby only the power supply and a communication interface (e.g. I2C, SPI) must be made available on the user side. Only a few lines from the COG module to the board are needed with these serial interfaces,. Usually the contacting of the COG modules takes place via FPC or PINs

2.What LCD mode is this COG display ADG12864A4 available ?

It is available with STN/Gray, Positive, Reflective.

3.What is the controller ST7565R ?

The ST7565R is a single-chip dot matrix LCD driver that can be connected directly to a microprocessor bus. 8-bit parallel or 4-line SPI display data sent from the microprocessor is stored in the internal display data RAM and the chip generates a LCD drive signal independent of the microprocessor. Because the chips in the ST7565R contain 65x132 bits of display data RAM and there is a 1-to-1 correspondence between the LCD panel pixels and the internal RAM bits, these chips enable displays with a high degree of freedom. The ST7565R chips contain 65 common output circuits and 132 segment output circuits, so that a single chip can drive a 65x132 dot display (capable of displaying 8 columns x4 rows of a 16x16 dot kanji font).

4.What is the difference between COG and COB ?

COG LCD modules can be more compact, reliable, cost effective, and require a lower currency than COB LCD modules.

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