TOPWAY
LCD Module User Manual
LM6082CFW
LM6082CFW
LCD Module User Manual
Prepared by:
Checked by:
Approved by:
Weiguangyang
Date:2017-08-23
Date:
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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TOPWAY
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
8-bit parallel
4-wire Serial
8080 mode
6800 mode
mode
PIN NO
PIN Name
I/O
(Default)
1
NC
No connection(leave open)
2
CSB
Input
Chip Select
CSB=L, enable access to the LCD module
CSB=H, disable access to the LCD module
3
VSS
Supply Negative power supply,0V
4
VDD
Supply Positive power supply
5
NC
No connection(leave open)
6
RS
Input
Register Select
RS = H, Transferring the Display Data
RS = L, Transferring the Control Data
7
/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
module
R/W=L,E=H  L;
8
/RD
Input
/WR=H, /RD=L;
Data or Status latch
(E)
Data or Status
into the LCD module
read form the LCD
module
9
DB0
I/O
8-bit Data bus;
Not used,
:
:
I/O
Three state I/O terminal for display data or Leave open
14
DB5
I/O
instruction data
15
DB6(SCLK)
I/O
when /CS=H,
Serial clock input
16
DB7(SDA)
I/O
DB0~DB7=High Impedance
Serial data input
17
BLA
Power Positive power supply for LED backlight
18
BLK
Power Negative power supply for LED backlight, 0V
19
RSTB
Input
Reset signal
RSTB = L, Initialization is executed
RSTB= H, Normal running.
20
NC
No connection(leave open)
Interface setting:
8-bit parallel
8-bit parallel
Setting
6800 mode
8080 mode (Default)
4-wire Serial mode
JP3
OPEN
OPEN
CLOSE
JP4
CLOSE
CLOSE
OPEN
JP5
OPEN
CLOSE
JP6
CLOSE
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
0
+3.6
V
V SS = 0V
Input Voltage
V IN
0
+3.3
V
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
V
VDD
Input High Voltage
V IH
0.7xV DD
-
V DD
V
RSTB, CSB, RS
Input Low Voltage
V IL
V SS
-
0.3xV DD
V
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
-
V
BLA
Forward Current
I BLA
-
46
80
mA
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
-
-
ns
Address setup time (RS)
taw8
10
-
-
ns
Address hold time (RS)
tah8
13
-
-
ns
Control LOW pulse width (RD)
tccl r
182
-
-
ns
Control LOW pulse width (WR)
tcclw
104
-
-
ns
Control HIGH pulse width (RD)
tcch r
104
-
-
ns
Control HIGH pulse width (WR)
tcchw
104
-
-
ns
Data setup time
tds8
52
-
-
ns
Data hold time
tdh8
13
-
-
ns
/RD access time (*2)
tacc8
-
-
91
ns
Output disable time (*2)
tch8
7
-
65
ns
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
LM6082CFW
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
-
-
ns
Address setup time (RS)
taw6
13
-
-
ns
Address hold time (RS)
tah6
13
-
-
ns
Control LOW pulse width (E)
tewlr
104
-
-
ns
Control LOW pulse width (E)
tewlw
104
-
-
ns
Control HIGH pulse width (E)
tewhr
182
-
-
ns
Control HIGH pulse width (E)
tewhw
104
-
-
ns
Write data setup time
tds6
52
-
-
ns
Write data hold time
tdh6
13
-
-
ns
/RD access time (*2)
tacc6
-
-
91
ns
Output disable time (*2)
tch6
7
-
65
ns
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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LCD Module User Manual
LM6082CFW
3.3.3 Serial Mode Interface
RS
V SS =0V,V DD =3.3V,T OP =25  C
Item
Symbol
MIN.
TYP.
MAX.
Unit
Serial Clock Period
tscyc
65
-
-
ns
SCLK “H” pulse width
tshw
33
-
-
ns
SCLK “L” pulse width
tslw
33
-
-
ns
Address setup time (RS)
tsas
26
-
-
ns
Address hold time (RS
tsah
13
-
-
ns
Data setup time
tsds
26
-
-
ns
Data hold time
tsdh
13
-
-
ns
CSB-SCL time
tcss
26
-
-
ns
CSB-SCL time
tcsh
52
-
-
ns
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
tr
-
-
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
0
:
DB7
DB0
1
:
DB7
:
:
:
:
:
:
128x64 pixels
DB0
6
:
DB7
DB0
7
:
DB7
Column Address
00h
7Fh
Note:
*1. ADC = 0 (normal)
*2. SHL Selection = 1 (reverse)
*3. Initial Display Line = 0
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LM6082CFW
4.5 Display Commands
Code
No. Instructions
Function
DON=0, display off
1
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
2
Set Start Line
0 1 0 0 1
5 4 3 2 1 0 address
Y Y Y Y
3
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
4
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
5
Read Status
0 0 1
Status
0 0 0 0
6
Write Data
1 1 0
Write data
Write data into the display RAM
7
Read Data
1 0 1
Read Data
Read data form the display RAM
Sets the display RAM address SEG output
8
ADC Select
0 1 0 1 0 1 0 0 0 0
correspondence
ADC= 0, normal. ADC=1, reverse
REV=0, Normal display
9
Normal/Reverse Display 0 1 0 1 0 1 0 0 1 1
REV=1, Reverse display
EON=0, Normal display
10
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
11
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
12
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”
13
END
0 1 0 1 1 1 0 1 1 1 0 Exit Read-modify-Write mode
14
Reset
0 1 0 1 1 1 0 0 0 1 0 Software reset
Set the COM scanning direction
SHL=0, Normal display
15
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
16
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
17
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
LM6082CFW
4.5Display Commands (continue)
Code
No. Instructions
Function
18
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
19
Booster Ratio Set
0 1 0 0 0 0 0 0 0 step 00=2x, 3x, 4x; 01=5x. 11=6x
20
Compound Instruction:
Power Save
- - - - - - - - - - -
Display OFF + Entire Display ON
21
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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