LMB162XFW

LMB162XFW

LCD Module User Manual

Prepared by:

Checked by:

Approved by:

Wang

Date:2015-10-08

Date:

Rev. Descriptions

Release Date

0.1

Prelimiay release

2008-09-24

0.2

Update Absolute Maximum Ratings

2015-07-28

0.3

Update Display Specifications

2015-10-08

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Document Name: LMB162XFW-Manual-Rev0.3

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LCD Module User Manual

LMB162XFW

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

Basic Setting ..................................................................................................................... 7

4.2

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

4.3

Adjusting the LCD display contrast ................................................................................... 7

4.4

Display Memory Map ........................................................................................................ 8

4.5

Display Commands ......................................................................................................... 10

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

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LCD Module User Manual

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1. Basic Specifications

1.1 Display Specifications

1) LCD Display Mode

: STN-Blue, Negative, Transmissive

2) Display Color

: Display Data = “1” : Light Gray (*1)

: Display Data = “0” : Dark Blue (*2)

3) Viewing Angle

: 6H

4) Driving Method

: 1/16 duty, 1/5 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

1.2 Mechanical Specifications

1) Outline Dimension

: 53.0 x 20.0 x 9.1MAX

(See attached Outline Drawing for details)

1.3 Block Diagram

LCD Panel

16 x 2 Char (5x8dots)

ST7066U

ST7065

equivalent

BLA

BLK

VDD

VSS

DB0 – DB7

RS, R/W, E

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1.4 Terminal Functions

Pin No.

Name

I/O

Descriptions

VSS

Power Power supply, Ground (0V)

VDD

Power Positive power supply

Power LCD contrast reference supply

Input Register Select

RS=HIGH: transferring display data

RS=LOW: transferring instruction data

R/W

Input Read / Write Control bus:

R/W=HIGH: Read mode selected

R/W=LOW: Write mode selected

Input Data Enable

DB0

I/O

Bi-directional tri-state Data bus

In 8 bit mode, DB0 ~ DB7 are in use

DB7

In 4 bit mode, DB4 ~ DB7 are in use, DB0~DB3 leave open

BLA

Power Backlight positive supply

BLK

Power Backlight negative supply

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LMB162XFW

2. Absolute Maximum Ratings

Items

Symbol

Min.

Max.

Unit Condition

Supply Voltage

V DD

6.0

V SS = 0V

Input Voltage

V IN

V DD

V SS = 0V

Operating Temperature

T OP

-20

 C

No Condensation

Storage Temperature

T ST

-30

 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 Condition /

Application Pin

Operating Voltage

V DD

4.7

5.0

5.3

VDD

Input High Voltage

V IH

0.8xV DD

V DD

RS, R/W, E, DB0 ~ DB7

Input Low Voltage

V IL

V SS

0.5

Output High Voltage

V OH

0.7xV DD

V DD

I OH =-0.1mA, DB0 ~ DB7

Output Low Voltage

V OL

V SS

0.5

I OL =0.1mA, DB0 ~ DB7

Operating Current

I DD

1.3

3.0

mA VDD, VSS

3.2 LED Backlight Circuit Characteristics

V BLK =0V, If BLA =16mA, T OP =25  C

Items

Symbol

MIN.

TYP.

MAX.

Unit Applicable Pin

Forward Voltage

Vf BLA

5.0

BLA

Forward Current

If BLA

mA BLA

Cautions:

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

BLA

BLK

No. of LED = 2 pcs

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3.3 AC Characteristics

V SS =0V, V DD =5V, T OP =25  C

Item

Symbol

MIN.

TYP.

MAX.

Unit

E cycle time

1500

E high level width

tpw

175

E rise time

E fall time

Address set-up time

tas

Address hold time

tah

Data set-up time

tdsw

Data delay time

tddr

125

Data hold time

Host Write Timing Diagram

Host Read Timing Diagram

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4. Function Specifications

4.1 Basic Setting

To drive the LCD module correctly and provide normally display, please use the following setting

- N=1, 2-line display

- F=0, 5x8 dots font

- D=1, display on

Note:

*1. These setting/commands should issue to the LCD module while start up.

*2. See the Display Commands section for details.

4.2 Resetting the LCD module

When turning on the VDD and VSS power supply, LCD module will execute the reset routine

automatically. It takes about 50ms. After the reset routine, the LCD module status will be as follow:

- Display clear

- DL=1,

8-bit interface

- N=0,

1-line display

- F=0,

5x8 dot character font

- D=0,

Display off

- C=0,

Cursor off

- B=0,

Blinking off

- I/D=1,

Increment by 1

- S=0,

No shift

Note:

*1. Reset routine could not generate the Basic Setting

4.3 Adjusting the LCD display contrast

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

Adjusting the VR will result the change of LCD display contrast. The recommended value of VR is

5k Ohm.

LCD Module

VDD

VSS

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4.4 Display Memory Map

There are two main memory-areas in the LCD module for display.

- Character Generator RAM (CGRAM)

- Display Data RAM (DDRAM)

4.4.1 Character Generator RAM (CGRAM)

Character Generator RAM is for storing the User-defined Characters (5x8 dots font).

Totally 8 User-defined Characters (character code = 00h ~ 07h) could be created.

The User-defined Character Codes are 00h and 07h. They could be called into DDRAM as normal

character.

User-defined

CGRAM Data (Font Pattern)

Character

CGRAM

Code

Address

D7 ~ D5

D4 ~ D0

00h

01h

Not Use

5 x 8 dots

(08h)

06h

font pattern

07h

08h

01h

09h

Not Use

5 x 8 dots

(09h)

0Eh

font pattern

0Fh

10h

02h

11h

Not Use

5 x 8 dots

(0Ah)

16h

font pattern

17h

18h

03h

19h

Not Use

5 x 8 dots

(0Bh)

1Eh

font pattern

1Fh

20h

04h

21h

Not Use

5 x 8 dots

(0Ch)

26h

font pattern

27h

28h

05h

29h

Not Use

5 x 8 dots

(0Dh)

2Eh

font pattern

2Fh

30h

06h

31h

Not Use

5 x 8 dots

(0Eh)

36h

font pattern

37h

38h

07h

39h

Not Use

5 x 8 dots

(0Fh)

3Eh

font pattern

3Fh

CGRAM Address Map

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4.4.2 Display Data RAM (DDRAM)

ROM Characters (Character Code = 10h ~ FFh) could be written into DDRAM for displaying the

Character (5x8 dots font). User-defined Characters (Character Code = 00h ~ 07h) stored in

CGRAM could also be use. Calling Character Code 08h ~ 0Fh will call out User-defined

Characters 00h ~ 07h respectively.

DDRAM Address

00h 01h 02h 03h

0Ch 0Dh 0Eh 0Fh

16 x 2 Characters

(5x8 dots font)

40h 41h 42h 43h

4Ch 4Dh 4Eh 4Fh

DDRAM Address

DDRAM Address Map

Note:

*1. The mapping is based on top view of the LCD module

*2. N=1, 2-line display

*3. F=0, 5x8 dots font

*4. D=1, display on

4.4.3 Character Code Rom

Please refer to ST7066U-0A Data sheet

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4.5 Display Commands

Code

No. Instructions

Function

Clear

Write “20h” to DDRAM and

Display

set DDRAM address (AC) to “00h”

Return

Set DDRAM address (AC) to “00h” and

Home

return cursor to its original position if shifted

(DDRAM contents are not change)

Set cursor moving direction and specify display

shift, during data read and write of DDRAM and

Entry Mode

CGRAM.

1 I/D S

Set

S=1, screen shifting;

S=0, no screen shifting

I/D=1, AC=AC+1 and if S=1, screen shift left

I/D=0, AC=AC-1 and if S=0, screen shift right

Display

D=1, display on;

D=0, display off

D C B C=1, cursor on;

ON/OFF

C=0, cursor off

B=1, cursor blinking on; B=0, cursor blinking off

Move the cursor or shift the display, where

Cursor or

DDRAM contents.

1 S/C R/L x

Display Shift

S/C=1, shift screen;

S/C=0, shift cursor

R/L=1, to right-side;

R/L=0, to left side

(if S/C=1, AC will not be changed)

Function

DL=1, 8-bit interface;

DL=0, 4-bit interface

1 DL N F

Set

N=1, 2-line display;

N=0, 1-line display

F=1, 5x11 dots font;

F=0, 5x8 dots font

Set CGRAM

1 AC5 AC4 AC3 AC2 AC1 AC0 Set CGRAM address in address counter

address

Set DDRAM

address

1 AC6 AC5 AC4 AC3 AC2 AC1 AC0 Set DDRAM address in address counter

Read Busy flag

Check the system status and get the address

1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0 counter content (AC6~AC0).

& address

BF=1, busy;

BF=0, ready

Write data

Write the data into internal RAM, where the

0 D7 D6 D5 D4 D3 D2 D1 D0

to RAM

address counter pointing at.

Read data

Read the data from internal RAM, where the

1 D7 D6 D5 D4 D3 D2 D1 D0

from RAM

address counter pointing at.

Note:

*1. Do not use any other command not listed, or the system malfunction may result.

*2. For the details of the Display Commands, please refer to ST7066U datasheet.

5. Design and Handling Precaution

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

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