Graphic Module

Graphic Module

Graphic module
Graphic module ADM240128B
Model No. ADM240128B
►Graphic module 240x128, Display LCD 240x128
►Monochrome Graphic LCD

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Product Details

Graphic module

Graphic module ADM240128B

Model No. ADM240128B

►Graphic module 240x128, Display LCD 240x128

►Monochrome Graphic LCD

►Built-in controller T6963C

►1/128duty

►+5V power supply

Description of graphic module ADM240128B

ADM240128B is a 240 x 128 graphic module which is having the module dimension 144x104 mm and AA size of 105.56x56.28 mm, diagonal size 4.8 inch. This 240x128 graphic module is built in with T6963C controller and negative voltage built in on module. This graphic module is temperature compensation optional and touch panel optional.

1.Features

a)240x128 dots graphic LCD module

b)Built-in controller (T6963C)

c)+5V power supply

d)1/128 duty cycle

e)LED backlight (+5V)

f)N.V. optional

2.Outline dimension

1.jpg

3.Absolute maximum ratings

Item

Symbol

Standard

Unit

Power voltage

VDD-VSS

0

-

7.0

V

Input voltage

VIN

VSS

-

VDD

Operating temperature range

VOP

-20

-

+70

Storage temperature range

VST

-30

-

+80

4.Block diagram

2.jpg

5.Interface pin description

Pin No.

Symbol

External connection

Function

1

VSS

Power supply

Signal ground for LCM (GND)

2

VDD

Power supply for logic (+5V) for LCM

3

V0

Operating voltage for LCD

4

C/D

MPU

H: Instruction L: Data

5

/RD

MPU

Read enable signal

6

/WR

MPU

Write enable signal

7~14

DB0~DB7

MPU

Data bus line

15

/CE

MPU

Chip enable signal

16

/RST

MPU

Reset signal

17

VEE


Negative voltage output

18

/D.OFF


Display OFF, active LOW.

19

FS

MPU

Font selection: H=6x8 dot matrix, L=8x8 dot matrix

20

LEDA

BKL power supply

Power supply for BKL

Contrast adjust

A)DC/DC not build in B) DC/DC build in

3.jpg

VDD~V0: LCD Driving voltage

VR: 10k~20k

7.jpg

FAQ

1.How is the display mode defined ?

The display mode is defined by this command.

CODE

FUNCTION

OPERAND

1000X000

OR Mode

1000X001

EXOR Mode

1000X011

AND Mode

1000X100

TEXT Attribute Mode

10000XXX

Internal character Mode

10001XXX

External character Mode


The display mode does not change until the next command is sent. The logical OR, EXOR, AND of text or graphic display can be displayed.

In internal character generator mode, character codes 00H to 7FH are assigned to the built-in character generator ROM. The character codes 80H to FFH are automatically assigned to the external character generator RAM.

2.What is Attribute function?

Attribute functions can only be applied to text display, since the attribute data is placed in the graphic RAM area.

The attribute operations are reverse display, character blink and inhibit. The attribute data is written into the graphic area, which was defined by the set control word command. Only text display is possible in attribute function mode; graphic display is automatically disabled. However, the display mode command must be used to turn both text and graphic on in order for the attribute function to be available.

The attribute data for each character in the text area is written to the same address in the graphic area. The attribute function is defined as follows.

Attribute RAM 1byte

X

X

X

X

DB3

DB2

DB1

DB0

DB3

DB2

DB1

DB0

FUNCTION

0

0

0

0

Normal display

0

1

0

1

Reverse display

0

0

1

1

Inhibit display

1

0

0

0

Blink of normal display

1

1

0

1

Blink of reverse display

1

0

1

1

Blink of inhibit display

3.How does Data auto read or write ?

CODE

HEX.

FUNCTION

OPERAND

10110000

B0H

Set data auto write

10110001

B1H

Set data auto read

10110010

B2H

Auto rest


The command is convenient for sending a full screen of data from the external display RAM. After setting auto mode, a data write (or read) command is need not be sent between each datum. A data auto write (or read) command must be send after a set address pointer command. After this command, the address pointer is automatically incremented by 1 after each datum. In auto mode, the T6963C cannot accept any other commands. The auto reset command must be sent to the T6963C after all data has been sent, to clear auto mode.

NOTE: A status check for auto mode (STA2, STA3 should be checked between sending of each datum. Auto reset should be performed after checking STA3=1(STA2=1)). Refer to the following flowchart.

4.jpg

4.What is Screen peek ?

CODE

HEX.

FUNCTION

OPERAND

11100000

E0H

Screen peek


This command is used to transfer 1 byte of displayed data to the data stack; this byte can then be read from the MPU by data access. The logical combination of text and graphic display data on the LCD screen can be read by read by this command.

The status (STA6) should be checked just after the screen peek command. If the address determined by the set address pointer command is not in the graphic area, this command is ignored and a status flag (STA6) is set.

Refer to the following flowchart.

5.jpg

Note: this command is available when hardware column number and software column number are the same. Hardware column number is related to MD2 and MD3 setting. Software column number is related to ser text area and set graphic area command.

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