LM6082CFW

TOPWAY

LCD Module User Manual

LM6082CFW

LCD Module User Manual

Prepared by:

Checked by:

Approved by:

Weiguangyang

Date:2017-08-23

Date:

Rev. Descriptions

Release Date

0.1

Prelimiay release

2017-08-15

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Document Name: LM6082CFW-Manual-Rev0.1

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LCD Module User Manual

LM6082CFW

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 ........................................................................................................... 9

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

4.2 Basic Setting ................................................................................................................................................................ 9

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

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

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

4.5 Display Commands (continue) ................................................................................................................................... 11

5. Design and Handling Precaution .......................................................................................... 12

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LCD Module User Manual

LM6082CFW

1. Basic Specifications

1.1 Display Specifications

1) LCD Display Mode

: STN-Blue, Negative, Transmissive

2) Display Color

: Display Data = “0” : Dark Blue (*1)

: Display Data = “1” : Light Gray (*2)

3) Viewing Angle

: 6H

4) Driving Method

: 1/65 duty, 1/9 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

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

1.2 Mechanical Specifications

1) Outline Dimension

: 78.0 x 70.0 x11.6mm (Max)

(See attached Outline Drawing for details)

1.3 Block Diagram

BLA

BLK

Backlight Circuit

LCD Panel

128 × 64Pixels

VDD,VSS

ST7565R or equivalent

RS,/WR,/RD

RSTB,CSB

DB0~DB7

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LCD Module User Manual

LM6082CFW

1.4 Terminal Functions

Descriptions

8-bit parallel

4-wire Serial

8080 mode

6800 mode

mode

PIN NO

PIN Name

I/O

(Default)

No connection(leave open)

CSB

Input

Chip Select

CSB=L, enable access to the LCD module

CSB=H, disable access to the LCD module

VSS

Supply Negative power supply,0V

VDD

Supply Positive power supply

No connection(leave open)

Input

RS = H, Transferring the Display Data

RS = L, Transferring the Control Data

/WR

Input

/WR=L  H,

R/W=H,E=H;

Not used,

(R/W)

/RD=H;

Data or Status read Leave open or pull Hi

Data or Instruction form

the

LCD

latch into the LCD

module

R/W=L,E=H  L;

/RD

Input

/WR=H, /RD=L;

Data or Status latch

(E)

Data or Status

into the LCD module

read form the LCD

module

DB0

I/O

8-bit Data bus;

Not used,

I/O

Three state I/O terminal for display data or Leave open

DB5

I/O

instruction data

DB6(SCLK)

I/O

when /CS=H,

Serial clock input

DB7(SDA)

I/O

DB0~DB7=High Impedance

Serial data input

BLA

Power Positive power supply for LED backlight

BLK

Power Negative power supply for LED backlight, 0V

RSTB

Input

Reset signal

RSTB = L, Initialization is executed

RSTB= H, Normal running.

No connection(leave open)

Interface setting:

8-bit parallel

Setting

6800 mode

8080 mode (Default)

4-wire Serial mode

JP3

OPEN

JP4

OPEN

JP5

OPEN

—

JP6

OPEN

—

Cautions:

“—” indicates fixed to either “OPEN” or to “CLOSE”

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LCD Module User Manual

LM6082CFW

2. Absolute Maximum Ratings

Items

Symbol

Min.

Max.

Unit Condition

Supply Voltage

V DD

+3.6

V SS = 0V

Input Voltage

V IN

+3.3

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

2.7

3.3

VDD

Input High Voltage

V IH

0.7xV DD

V DD

RSTB, CSB, RS

Input Low Voltage

V IL

V SS

0.3xV DD

SDA, SCLK

Operating Current

I DD

0.33

2.5

mA VDD

3.2 LED Backlight Circuit Characteristics

BLK=0V,BLA=3.3V, T OP =25  C

Items

Symbol

MIN.

TYP.

MAX.

Unit

Applicable Pin

Forward Voltage

BLA

3.3

BLA

Forward Current

I BLA

BLA

Cautions:

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

BLA

BLK

No. of LED = 4 pcs

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LCD Module User Manual

LM6082CFW

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

312

Address setup time (RS)

taw8

Address hold time (RS)

tah8

Control LOW pulse width (RD)

tccl r

182

Control LOW pulse width (WR)

tcclw

104

Control HIGH pulse width (RD)

tcch r

104

Control HIGH pulse width (WR)

tcchw

104

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 15ns .

*2.All timing is using 20% and 80% of VDD as the reference.

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LCD Module User Manual

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3.3.2 6800 Mode System Bus Timing

V SS =0V,V DD =3.3V,T OP =25  C

Item

Symbol

MIN.

TYP.

MAX.

Unit

System cycle time

tcyc6

312

Address setup time (RS)

taw6

Address hold time (RS)

tah6

Control LOW pulse width (E)

tewlr

104

Control LOW pulse width (E)

tewlw

104

Control HIGH pulse width (E)

tewhr

182

Control HIGH pulse width (E)

tewhw

104

Write data setup time

tds6

Write data hold time

tdh6

/RD access time (*2)

tacc6

Output disable time (*2)

tch6

Note:

*1. Input signal rise/fall time should be less than 15ns .

*2. CL=100pF

*3.All timing is using 20% and 80% of VDD as the reference.

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3.3.3 Serial Mode Interface

V SS =0V,V DD =3.3V,T OP =25  C

Item

Symbol

MIN.

TYP.

MAX.

Unit

Serial Clock Period

tscyc

SCLK “H” pulse width

tshw

SCLK “L” pulse width

tslw

Address setup time (RS)

tsas

Address hold time (RS

tsah

Data setup time

tsds

Data hold time

tsdh

CSB-SCL time

tcss

CSB-SCL time

tcsh

Note:

*1. Input signal rise/fall time should be less than 15ns .

*2. CL=100pF

*3.All timing is using 20% and 80% of VDD as the reference.

3.3.4 Reset Timing

V SS =0V, V DD =3.3V, T OP =25  C

Item

Symbol

MIN.

TYP.

MAX.

Unit

Reset time

2.5

μs

Reset LOW pulse width

trw

2.5

μs

Note:

*1.All timing is using 20% and 80% of VDD as the reference.

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LCD Module User Manual

LM6082CFW

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 Basic Setting

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

- ADC = 0 (normal)

- SHL select = 1 (reverse)

- LCD Bias Select = 1/9

- Initial Display Line = 0

- Entire Display ON/OFF = OFF (normal)

- Reverse Display ON/OFF = OFF (normal)

- Set Power Control Set:

voltage follower = ON, voltage converter = ON, voltage regulator = ON

- Booster Set = 4x

- Display ON/OFF = ON

Note:

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

*2. See the Display Commands section for details.

4.3 Resetting the LCD module

The LCD module should be initialized by using RSTB terminal.

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

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

4.4 Display Memory Map

Page address

data

LCD Display (front view)

DB0

DB7

DB0

DB7

128x64 pixels

DB0

DB7

DB0

DB7

Column Address

00h



7Fh

Note:

*1. ADC = 0 (normal)

*2. SHL Selection = 1 (reverse)

*3. Initial Display Line = 0

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LCD Module User Manual

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4.5 Display Commands

Code

No. Instructions

Function

DON=0, display off

Display ON/OFF

0 1 0 1 0 1 0 1 1 1

DON=1, display on

S S S S S S Sets the display RAM display start line

Set Start Line

0 1 0 0 1

5 4 3 2 1 0 address

Y Y Y Y

Set Page Address

0 1 0 1 0 1 1

3 2 1 0

Set the display RAM page address

Set Column Address

0 1 0 0 0 0 1

X X X X Set the upper-4-bit of column address

(Upper-4-bits)

7 6 5 4 counter

Set Column Address

0 1 0 0 0 0 0

X X X X

Set the lower-4-bit of column address counter

(Lower-4-bits)

3 2 1 0

Read the status data

Read Status

0 0 1

Status

0 0 0 0

Write Data

1 1 0

Write data

Write data into the display RAM

Read Data

1 0 1

Read Data

Read data form the display RAM

Sets the display RAM address SEG output

ADC Select

0 1 0 1 0 1 0 0 0 0

correspondence

ADC= 0, normal. ADC=1, reverse

REV=0, Normal display

Normal/Reverse Display 0 1 0 1 0 1 0 0 1 1

REV=1, Reverse display

EON=0, Normal display

Entire Display ON/OFF

0 1 0 1 0 1 0 0 1 0

EON=1, Entire display ON

Set the LCD driving voltage bias

Set LCD Bias

0 1 0 1 0 1 0 0 0 1

BIAS=0, 1/9 BIAS

BIAS=1, 1/7 BIAS

Enter the “Read-Modify-Write” mode

column address counter will increase in each

Set Read-Modify-Write

0 1 0 1 1 1 0 0 0 0 0 “Write Display Data”,

and will not increase in each “Read Display

Data command”

END

0 1 0 1 1 1 0 1 1 1 0 Exit Read-modify-Write mode

Reset

0 1 0 1 1 1 0 0 0 1 0 Software reset

Set the COM scanning direction

SHL=0, Normal display

SHL Select

0 1 0 1 1 0 0

* * *

SHL=1, Flipped in y direction

* = don’t care terms

Set the power circuit operation mode

VF: LCD Supply Voltage Follower

Power Control Set

0 1 0 0 0 1 0 1

VR: LCD Supply Voltage Regulator

VC: LCD Supply Voltage Converter

(1=ON, 0=OFF)

Radio

Regulator Resistor

0 1 0 0 0 1 0 0

Set the built-in resistor ratio (R1/R2)

Select

setting

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LCD Module User Manual

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4.5Display Commands (continue)

Code

No. Instructions

Function

Electronic volume mode set 0 1 0 1 0 0 0 0 0 0 1 Set reference voltage mode

Electronic volume register

E E E E E

E Set reference voltage register

set

0 1 0 * * V V V V V

5 4 3 2 1

V0 (Display contrast value)

0 1 0 1 1 1 1 1 0 0 0 Select booster ratio

Booster Ratio Set

0 1 0 0 0 0 0 0 0 step 00=2x, 3x, 4x; 01=5x. 11=6x

Compound Instruction:

Power Save

- - - - - - - - - - -

Display OFF + Entire Display ON

NOP

0 1 0 1 1 1 0 0 0 1 1 No operation

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 ST7565R data sheet.

4.5.1 Power off the LCD Module

It recommends that enter Sleep Mode before power off the LCD module.

4.5.2 Refreshing The LCD Module

It recommends that the operating modes and display contents be refreshed periodically to prevent

the effect of unexpected noise.

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5. Design and Handling Precaution

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

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