LM256160DCW

LM256160DCW

LCD Module User Manual

Prepared by:

Checked by:

Approved by:

ChenJian

Date: 2014-4-8

Date:

Rev. Descriptions

Release Date

0.1

Preliminary release

2014-4-8

URL: www.topwaydisplay.com

Document Name: LM256160DCW-Manual-Rev0.1

Page: 1 of 14

TOPWAY

LCD Module User Manual

LM256160DCW

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

3.4

Reset Timing .......................................................................................................................................................... 8

4. Function Specifications ........................................................................................................ 9

4.1

Adjusting the Display Contrast ............................................................................................................................... 9

4.2

Resetting the LCD module ..................................................................................................................................... 9

4.3

Display Memory Map ............................................................................................................................................. 9

4.4

Commands ........................................................................................................................................................... 10

4.5

Command Table ................................................................................................................................................... 13

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Document Name: LM256160DCW-Manual-Rev0.1

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LCD Module User Manual

LM256160DCW

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

: 6H

4) Driving Method

: 1/160 duty, 1/12 bias

5) Back Light

: 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

*3. Fine Contrast adjustment function is necessary in the application design for optimal display result

1.2 Mechanical Specifications

1) Outline Dimension

: 93.0 x 64.2 x 9.8 MAX

(See attached Outline Drawing for details)

1.3 Block Diagram

LCD Panel

256 x 160 pixels

DB0 ~ DB7

UC1611S

/CS, /RST, RS, /WR, /RD

VDD

VSS

equivalent

Back Light Circuit

BLA

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LCD Module User Manual

LM256160DCW

1.4 Terminal Functions

Descriptions

Pin No.

Pin Name

I/O

8-bit parallel

Serial

8080 mode

mode

I 2 C mode

VDD

Power

Positive Power Supply

VSS

Power

0V Supply, Ground (0V)

/CS

Input

Chip Select

Not use, connect

/CS=LOW : Data IO is enabled

to VSS

Input

Not use,

RS=HIGH: data on DB0 to DB7 is display data

connect to VSS

RS=LOW: data on DB0 to DB7 is control data

/WR

Input

/WR=H, /RD=L;

Not use, connect to VSS

Data or Status read form the

LCD module

/RD

Input

/WR=L  H, /RD=H;

Not use, connect to VSS

Data or Instruction latch into

the LCD module

DB0(SCL)

I/O

8-bit Data bus;

Serial clock input(DB0)

Three state I/O terminal for

display data or instruction

Not use, connect to VDD or VSS

data

DB3(SDA)

when /CS =H,

Serial data input(DB3)

DB0~DB7=High Impedance

Not use, connect to VDD or VSS

DB7

/RST

Input

Reset:

/RST=LOW: Initialization is executed

/RST=HIGH: Normal

BLA

Power

Backlight Positive Power Supply

Interface setting:

Setting

8080 mode(Default)

SPI mode

I 2 C mode *

JP1

OPEN

JP2

OPEN

JP3

OPEN

JP4

OPEN

JP5

OPEN

JP6

OPEN

JP7

OPEN

JP8

OPEN

JP9

OPEN

JP10

OPEN

Note:

*1. In I 2 C Interface setting, R3 and R4 should be setup (10k Ω ).

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LCD Module User Manual

LM256160DCW

2. Absolute Maximum Ratings

Items

Symbol

Min.

Max.

Unit Condition

Supply Voltage

V DD

-0.3

+4.0

V SS = 0V

Input Voltage

V IN

-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 =3.3V, T OP =25  C

Items

Symbol

MIN.

TYP

MAX.

Unit Condition /

Application Pin

Operating Voltage

V DD

3.0

3.3

3.6

VDD

Input High Voltage

V IH

0.8xV DD

V DD

/RST, /CS, RS, /WR, /RD,

Input Low Voltage

V IL

0.2xV DD

DB0~DB7

Operating Current

I DD

1.5

7.0

mA VDD

3.2 LED Backlight Circuit Characteristics

V SS =0V, If BLA =100mA, T OP =25  C

Items

Symbol

MIN.

TYP.

MAX.

Unit Applicable Pin

Forward Voltage

Vf BLA

3.3

BLA

Forward Current

If BLA

100

110

mA BLA

Cautions:

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

BLA

VSS

No. of LED = 5pcs

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LCD Module User Manual

LM256160DCW

3.3 AC Characteristics

3.3.1 8080 Mode System Bus Timing

V SS =0V, V DD =3.3V, T OP =25  C

Item

Symbol

MIN.

TYP.

MAX.

Unit

System cycle time

tcyc8

200

Address setup time (RS)

taw8

Address hold time (RS)

tah8

Control LOW pulse width (/WR)

tcclw

Control LOW pulse width (/RD)

tcclr

Control HIGH pulse width (/WR)

tcchw

Control HIGH pulse width (/RD)

tcchr

Data setup time

tds8

Data hold time

tdh8

/RD access time (*2)

tacc8

Output disable time (*2)

tch8

Note:

*1. Input signal rise/fall time should be less than 12ns

*2. CL=100pF

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3.3.2 Serial Mode Interface

V SS =0V, V DD =3.3V, T OP =25  C

Item

Symbol

MIN.

TYP.

MAX.

Unit

Serial Clock Period

tscyc

Address setup time (D/C)

tsas

Address hold time (D/C)

tsah

SCL “H” pulse width

tshw

SCL “L” pulse width

tslw

Data setup time

tsds

Data hold time

tsdh

CS-SCL time

tcss

CS-SCL time

tcsh

Note:

*1. Input signal rise/fall time should be less than 12ns

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LCD Module User Manual

LM256160DCW

3.3.3 I 2 C mode Interface

V SS =0V, V DD =3.3V, T OP =25  C

Item

Symbol

MIN.

TYP.

MAX.

Unit

SCK cycle time(READ)

725

SCK cycle time(WRITE)

t CYI2C

345

Low pulse width(READ)

363

Low pulse width(WRITE)

t LPWI2C

173

High pulse width(READ)

363

High pulse width(WRITE)

t HPWI2C

173

Data setup time

t DSI2C

Data hold time

t DHI2C

START Setup time

t SSTAI2C

START Hold time

t HSTAI2C

STOP setup time

t SSTOI2C

Bus Free time between STOP

and START condition

t BUF

207

Note:

*1. Input signal rise/fall time should be less than 80ns

3.4 Reset Timing

V SS =0V, V DD =3.3V, T OP =25  C

Item

Symbol

MIN.

TYP.

MAX.

Unit

Reset time

Reset LOW pulse width

trw

μs

Note:

*1. Input signal rise/fall time should be less than 12ns

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LCD Module User Manual

LM256160DCW

4. Function Specifications

4.1 Adjusting the Display Contrast

This LCD module equipped with latest digital contrast adjustment function.

Its display contrast could be adjusted by MCU command.

(Please see the command tables for details)

It is recommended to provide a contrast adjustment interface for end-user,

where the best display result could meet the individual preference in mass production.

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 Display Memory Map

Page

data

LCD Display (front view)

256x160 Pixels

Column

Address

……

(dec)

Pixel mapping (Top View)

Note:

* 1. Based on the top view of the LCD module,

*2. The above is memory map based on:

On/Off mode setting, DC[5:3]=100 (1bpp) ,the Page value range: 0 ～ 19

LC[0]=MSF=0

LC[1]=MX=1

LC[2]=MY=0

SL=0

*3. For 4,8 and 16 Gray-shade operation please refer to UC1611 datasheet.

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LM256160DCW

4.4 Commands

4.4.1 Register Table

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LCD Module User Manual

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LCD Module User Manual

LM256160DCW

4.5 Command Table

The following setting should be issue to LCD module after hardware reset.

(It is an example only; it could be adjusted if necessary.)

Note:

Please refer to UC1611 data sheet for details

R/W=0 means it is a write function, R/W=1 means it is a read function

RS=0 means it is a control data, RS=1 means it is a display data

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LCD Module User Manual

LM256160DCW

Design and Handling Precaution

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

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Document Name: LM256160DCW-Manual-Rev0.1

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