LM240128TCW

LM240128TCW

LCD Module User Manual

Prepared by:

Checked by:

Approved by:

K.C.

Date:

Rev. Descriptions

Release Date

0.1

Preliminary New release

2008-05-13

URL: www.topwaydisplay.com

Document Name: LM240128TCW-Manual-Rev0.1

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TOPWAY

LCD Module User Manual

LM240128TCW

Table of Content

1. Basic Specifications .............................................................................................................. 3

1.1

Display Specifications ............................................................................................................................ 3

1.2

Mechanical Specifications ..................................................................................................................... 3

1.3

Block Diagram ....................................................................................................................................... 3

1.4

Terminal Functions ................................................................................................................................ 4

2. Absolute Maximum Ratings .................................................................................................. 5

3. Electrical Characteristics ...................................................................................................... 5

3.1

DC Characteristics ................................................................................................................................. 5

3.2

LED Backlight Circuit Characteristics .................................................................................................... 5

3.3

AC Characteristics ................................................................................................................................. 6

4. Function Specifications ......................................................................................................... 7

4.1

Adjusting the Display Contrast............................................................................................................... 7

4.2

Resetting the LCD module ..................................................................................................................... 7

4.3

Internal Hard-wired Setting .................................................................................................................... 7

4.4

Display Memory Mapping Parameter .................................................................................................... 7

4.5

Commands Table .................................................................................................................................. 8

5. Design and Handling Precaution ........................................................................................ 10

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LCD Module User Manual

LM240128TCW

1. Basic Specifications

1.1 Display Specifications

1) LCD Display Mode

: FSTN, Positive, Transflective

2) Display Color

: Display Data = “1” : Dark Gray(*1)

: Display Data = “0” : Light Gray (*2)

3) Viewing Angle

: 6 H

4) Driving Method

: 1/128 duty, 1/12 bias

5) Backlight

: White LED backlight

Note:

*1. Color tone may slightly change by Temperature and Driving Condition.

*2. The Color is defined as the inactive / background color

1.2 Mechanical Specifications

1) Outline Dimension

: 144.0 x 104.0 x 13.3MAX

see attached Outline Drawing for details

1.3 Block Diagram

BLA

LED Backlight Circuit

BLK

LCD Panel

240 x 128 pixels

SEGMENT

Driver

VDD, VSS, FG

Power and

T6963C

32k x 8bit

VOUT, V0

Booster Circuit

or equivalent

SRAM

DB0 - DB7

C/D, /RD, /WR

/CE, /RST, FS1

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LM240128TCW

1.4 Terminal Functions

No.

Name

I/O

Descriptions

Power Frame Ground, Connected to VSS

VSS

Power 0V Power Supply, GND

VDD

Power Positive Power Supply

Power LCD Contrast Reference Input

/WR

Input

Data or Command Write Signal

/RD

Input

Data or Status Read Signal

/CE

Input

Chip Enable Signal

C/D

Input

Address for Data or Command:

C/D=H, /WR=L, /RD=H : Command Write

C/D=H, /WR=H, /RD=L : Status Read

C/D=L, /WR=L, /RD=H : Data Write

C/D=L, /WR=H, /RD=L : Data Read

No Connection, Leave Open

/RST

Input

Reset Signal:

/RST = L, Reset the LCD Module

/RST = H, Normal Running

DB0

I/O

8-bit data bus

DB7

FS1

Input

Font Selection Input:

FS1=H : 6x8 font

FS1=L : 8x8 font

VOUT

Power Power Booster Output for V0

BLA

Power Positive Power Supply for LED backlight

BLK

Power Negative Power Supply for LED backlight

BLA

Power Positive Power Supply for LED backlight

No Connection, Leave Open

BLK

Power Negative Power Supply for LED backlight

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LCD Module User Manual

LM240128TCW

2. Absolute Maximum Ratings

Items

Symbol

Min.

Max.

Unit

Condition

Supply Voltage

V DD

+6.0

V SS = 0V

Input Voltage

V IN

V SS -0.3

V DD +0.3

V SS = 0V

Operating Temperature

T OP

-20

+70

 C

No Condensation

Storage Temperature

T ST

-30

+80

 C

No Condensation

Cautions:

Any Stresses exceeding the Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this

device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may

affect device reliability.

3. Electrical Characteristics

3.1 DC Characteristics

V SS =0V, V DD =5.0V, T OP =25  C

Items

Symbol

MIN.

TYP.

MAX.

Unit Applicable Pin

Operating Voltage

V DD

4.5

5.0

5.5

VDD

DB0~DB8, /WR, /RD, /CE,

Input High Voltage

V IN

0.8xVDD

VDD

C/D, /RST, FS1

DB0~DB8, /WR, /RD, /CE,

Input Low Voltage

V IN

0.5

C/D, /RST, FS1

Operating Current

I DD

15.5

37.0

mA VDD

3.2 LED Backlight Circuit Characteristics

BLK=0V, If BLA =170mA, T OP =25  C

Items

Symbol

MIN.

TYP.

MAX.

Unit

Applicable Pin

Forward Voltage

Vf BLA

5.0

BLA

Forward Current

If BLA

170

200

BLA

Cautions:

Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.

BLA

BLK

No. of LED = 10pcs

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LCD Module User Manual

LM240128TCW

3.3 AC Characteristics

V SS =0V, V DD =5.0V, T OP =25  C

Item

Symbol

MIN.

TYP.

MAX.

Unit

C/D Setup Time

tcds

130

C/D Hold Time

tcdh

/CE,/RD,/WR Pulse Width

tce, trd, twr

100

Data Setup Time

tds

100

Data Hold Time

tdh

Access Time

tacc

190

Output Hold Time

toh

Note: *1. Input signal rise/fall time should be less than 20ns

Bus Timing Diagram

3.3.1 Reset Timing

V SS =0V, V DD =5.0V, T OP =25  C

Item

Symbol

MIN.

TYP.

MAX.

Unit

Reset Time

100

μs

Reset LOW pulse width

trw

100

μs

Reset Timing Diagram

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LCD Module User Manual

LM240128TCW

4. Function Specifications

4.1 Adjusting the Display Contrast

A Variable-Resistor must be connected to the LCD module for providing a reference to V0.

Adjusting the VR will result the change of LCD display contrast.

The recommended value of VR is 25k to 50k

VDD

VOUT

VSS

4.2 Resetting the LCD module

The LCD module should be initialized by using /RST terminal.

While turning on the VDD and VSS power supply, maintain /RST terminal at LOW level. After the

power supply stabilized, release the reset terminal (/RST=HIGH)

4.3 Internal Hard-wired Setting

The followings are the major hard-wired setting of the T6963C in side the LCD module.

Items

Value

Wiring Setting

Note

Scanning Type

Single

/DUAL=H

Single scanning LCD

Logical Display Size (x)

320

MD3=H, MD2=L

Logical Display Size is NOT

Logical Display Size (y)

MDS=L, MD1=L, MD0=L equal Physical Display Size

Font size setting

8x8 dot

FS0=L, FS1=L

Font size is depends on FS1

6x8 dot

FS0=L, FS1=H

status connected externally

4.4 Display Memory Mapping Parameter

Example:

Home Address

Area

Text Layer

0000(hex)

001E(hex)

Graphics Layer

0800(hex)

001E(hex)

Note:

*1.

For the details of the commands and T6963C operation please refer to T6963C Data sheet.

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LCD Module User Manual

LM240128TCW

4.5 Commands Table

Command

Code (8bit)

Note

Registers

Set Cursor Pointer

0 1 0 X Address

Setting

0 1 0 Y Address

0 1 1 0010 0001

Set Offset Register

0 1 0 DATA

0 1 0 0000 0000

0 1 1 0010 0010

Set Address Pointer

0 1 0 Low Address

0 1 0 High Address

0 1 1 0010 0100

Set Control

Set Text Home Address

0 1 0 Low Address

Word

0 1 0 High Address

0 1 1 0100 0000

Set Text Area

0 1 0 Columns

0 1 0 0000 0000

0 1 1 0100 0001

Set Graphic Home Address

0 1 0 Low Address

0 1 0 High Address

0 1 1 0100 0010

Set Graphic Area

0 1 0 Columns

0 1 0 0000 0000

0 1 1 0100 0011

Mode Set

OR mode

0 1 1 1000 x000

EXOR mode

0 1 1 1000 x001

AND mode

0 1 1 1000 x011

Text Attribute mode

0 1 1 1000 x100

Internal CG ROM mode

0 1 1 1000 0xxx

External CG RAM mode

0 1 1 1000 1xxx

Display Mode

Display off

0 1 1 1001 0000

D3: Graphic Display on

Cursor on, Blink off

0 1 1 1001 xx10

D2: Text Display on

Cursor on, Blink on

0 1 1 1001 xx11

D1: Cursor Display on

Text on, Graphic off

0 1 1 1001 01xx

D0: Cursor Blink on

Text off, Graphic on

0 1 1 1001 10xx

Text on, Graphic on

0 1 1 1001 11xx

Cursor Pattern 1-line cursor

0 1 1 1010 0000

Select

2-line cursor

0 1 1 1010 0001

3-line cursor

0 1 1 1010 0010

4-line cursor

0 1 1 1010 0011

5-line cursor

0 1 1 1010 0100

6-line cursor

0 1 1 1010 0101

7-line cursor

0 1 1 1010 0110

8-line cursor

0 1 1 1010 0111

Data Auto

Set Data Auto Write

0 1 1 1011 0000

Read/Write

Set Data Auto Read

0 1 1 1011 0001

Auto Reset

0 1 1 1011 0010

Data

Data Write Increment ADP

0 1 0 Data

Read/Write

0 1 1 1100 0000

Data Read Increment ADP

0 1 1 1100 0001

1 0 0 Data

Data Write Decrement ADP

0 1 0 Data

0 1 1 1100 0010

Data Read Decrement ADP

0 1 1 1100 0011

1 0 0 Data

Data Write Non-variable ADP

0 1 0 Data

0 1 1 1100 0100

Data Read Non-variable ADP

0 1 1 1100 0101

1 0 0 Data

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LCD Module User Manual

LM240128TCW

Commands Table (continue)

Command

Code (8bit)

Note

Screen

Screen Peek

0 1 1 1110 0000

Not use

Peek/Copy

Screen Copy

0 1 1 1110 1000

Not use

Bit Set/Reset

Bit Reset

0 1 1 1111 0xxx

D3: Set/Clear bit

Bit Set

0 1 1 1111 1xxx

D2,D1,D0: bit no.

Bit 0 (LSB)

0 1 1 1111 x000

Bit 1

0 1 1 1111 x001

Bit 2

0 1 1 1111 x010

Bit 3

0 1 1 1111 x011

Bit 4

0 1 1 1111 x100

Bit 5

0 1 1 1111 x101

Bit 6

0 1 1 1111 x110

Bit 7 (MSB)

0 1 1 1111 x111

Status Check

Check the status

1 0 1 Status

D0: Command execution ready

D1: Data read/write ready

D2: Auto mode data read ready

D3: Auto mode data write ready

D4: not used

D5: Controller operation normal

D6: Error Flag

D7: Normal display

Note:

*1. When sending commands or data, Status Check must be performed.

Otherwise, T6963C cannot operate normally, even after a delay time.

*2. For the details of the commands and T6963C operation please refer to T6963C Data sheet.

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Document Name: LM240128TCW-Manual-Rev0.1

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LCD Module User Manual

LM240128TCW

5. Design and Handling Precaution

Please refer to "LCD-Module-Design-Handling-Precaution.pdf".

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Document Name: LM240128TCW-Manual-Rev0.1

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