LM6038FDW-2
LCD Module User Manual
Prepared by:
Checked by:
Approved by:
Huchubin
Date:2020-09-02
Date:
Date:
Rev.
Descriptions
Release Date
0.1
Preliminary release
2020-09-02
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LM6038FDW-2
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
1.5
Jumper 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................................................................................................................................ .......................... 9
4. Function specifications................................................................................................ ......... 9
4.1
The Parallel Interface................................................................................................................................ ............. 9
4.2
The Serial Interface................................................................................................................................ ................ 9
4.3
Basic Setting ........................................................................................................................................................ 10
4.4
Resetting the LCD module ................................................................................................................................... 10
4.5
Display Memory Map ............................................................................................................................................ 10
4.6
Display Commands .............................................................................................................................................. 11
4.7
Display Commands (continue) ............................................................................................................................. 12
4.8
Basic Operating Sequence (example) .................................................................................................................. 13
5. Design and Handling Precaution ........................................................................................ 14
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1. Basic Specifications
1.1
Display Specifications
1) LCD Display Mode
: STN-GRAY, Positive, Transmissive
2) Display Color
: Display Data = “1” : Deep Blue(*1)
: Display Data = “0” : 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
1.2
Mechanical Specifications
1) Outline Dimension
: 84.0 x 54.0 x 11.1MAX (mm)
(See attached Outline Drawing for details)
1.3
Block Diagram
BLA
Backlight Circuit
LCD Panel
128 × 64Pixels
VDD
VSS
SCL, SI
ST7565P or equivalent
/CS1, /RES, A0
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1.4
Terminal Functions
Descriptions
PIN NO
PIN Name
I/O
8-bit parallel
8-bit parallel
Serial mode
8080 mode
6800 mode
1
/CS1
Input
Chip Select
/CS1=L, enable access to the LCD module
/CS1=H, disable access to the LCD module
2
/RES
Input
Reset signal
/RES = L, Initialization is executed
/RES = H, Normal running.
3
A0
Input
Register Select
A0 = H, Transferring the Display Data
A0 = L, Transferring the Control Data
4
/WR
Input
/WR=L H, /RD=H;
R/W=H,E=H;
Not used,
(R/W)
Data or Instruction
Data or Status read Leave open or pull Hi
latch into the LCD
from the LCD module
module
R/W=L,E=H L;
5
/RD
Input
/WR=H, /RD=L;
Data or Status latch
(E)
Data or Status read
into the LCD module
form the LCD
module
6
D0
I/O
8-bit Data bus;
Not used,
:
:
I/O
Three state I/O terminal for display data or
Leave open
11
D5
I/O
instruction data
12
D6(SCL)
I/O
when /CS=H,
Serial clock input
13
D7(SI)
I/O
D0~D7=High Impedance
Serial data input
14
VDD
Supply
Positive power supply
15
VSS
Supply
Negative power supply,0V
16
BLA
Supply
Positive power for LED backlight
1.5
Jumper Functions
JP1
JP2
JP3
JP4
Interface Mode
CLOSE
OPEN
CLOSE
OPEN
6800 Mode
OPEN
CLOSE
CLOSE
OPEN
8080 Mode
OPEN
CLOSE
OPEN
CLOSE
Serial Mode (default)
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2. Absolute Maximum Ratings
Items
Symbol
Min.
Max.
Unit Condition
Supply Voltage
V DD
-0.3
+3.3
V
V SS = 0V
Input Voltage
V IN
-0.3
V DD +0.3
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 =3.0V, T OP =25 ° C
Items
Symbol
MIN.
TYP.
MAX.
Unit Condition /
Application Pin
Operating Voltage
V DD
2.8
-
3.3
V
VDD
Input High Voltage
V IH
0.8xV DD
-
V DD
V
/RES, /CS1, A0,
Input Low Voltage
V IL
V SS
-
0.2xV DD
V
/WR, /RD, D0~D7
Output High Voltage
V OH
0.75xV DD
-
V DD
V
D0~D7
Output Low Voltage
V OL
V SS
-
0.25xV DD
V
D0~D7
Operating Current
I DD
-
0.3
1.7
mA
VDD
3.2
LED Backlight Circuit Characteristics
V SS =0V, If=75mA, T OP =25 ° C
Items
Symbol
MIN
TYP
MAX
Unit
Applicable Pin
Forword Voltage
Vf BLA
-
3.3
-
V
BLA
Forword Current
If BLA
-
75
100
mA
BLA
Cautions:
Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.
BLA
VSS
No. of LED = 5x 1 pcs
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3.3
AC Characteristics
3.3.1 Serial Mode Interface
V SS =0V, V DD =3.0V, T OP =25 ° C
Item
Symbol
MIN.
TYP.
MAX.
Unit
Serial Clock Period
tscyc
125
-
-
ns
Address setup time (A0)
tsas
38
-
-
ns
Address hold time (A0)
tsah
25
-
-
ns
SCL “H” pulse width
tshw
63
-
-
ns
SCL “L” pulse width
tslw
63
-
-
ns
Data setup time
tsds
38
-
-
ns
Data hold time
tsdh
25
-
-
ns
CS-SCL time
tcss
38
-
-
ns
CS-SCL time
tcsh
75
-
-
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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3.3.2 8080 Mode System Bus Timing
V SS =0V, V DD =3.0V, T OP =25 ° C
Item
Symbol
MIN.
TYP.
MAX.
Unit
System cycle time
tcyc8
500
-
-
ns
Address setup time (A0)
taw8
10
-
-
ns
Address hold time (A0)
tah8
10
-
-
ns
Control LOW pulse width (/RD)
tccl r
275
-
-
ns
Control LOW pulse width (/WR)
tcclw
275
-
-
ns
Control HIGH pulse width (/RD)
tcch r
225
-
-
ns
Control HIGH pulse width (/WR)
tcchw
225
-
-
ns
Data setup time
tds8
50
-
-
ns
Data hold time
tdh8
10
-
-
ns
/RD access time (*2)
tacc8
-
-
175
ns
Output disable time (*2)
tch8
13
-
125
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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3.3.3 6800 Mode System Bus Timing
V SS =0V, V DD =3.0V, T OP =25 ° C
Item
Symbol
MIN.
TYP.
MAX.
Unit
System cycle time
tcyc6
500
-
-
ns
Address setup time (A0)
taw6
10
-
-
ns
Address hold time (A0)
tah6
10
-
-
ns
Control LOW pulse width (/RD)
tewlr
275
-
-
ns
Control LOW pulse width (/WR)
tewlw
275
-
-
ns
Control HIGH pulse width (/RD)
tewhr
225
-
-
ns
Control HIGH pulse width (/WR)
tewhw
225
-
-
ns
Data setup time
tds6
50
-
-
ns
Data hold time
tdh6
10
-
-
ns
/RD access time (*2)
tacc6
-
-
175
ns
Output disable time (*2)
tch6
13
-
125
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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3.4
Reset Timing
V SS =0V, V DD =3.0V, 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.
4. Function specifications
4.1
The Parallel Interface
Shared
6800 Mode
8080 Mode
Function
A0
R/W
E
/RD
/WR
H
H
H
L
H
Reads the display data
H
L
H L
H
L H
Writes the display data
L
H
H
L
H
Status read
L
L
H L
H
L H
Write control data(command)
4.2
The Serial Interface
When the serial interface has been selected then when the chip is in active state the serial data
input(SI) and the serial clock(SCL) can be received. The serial data is read from the serial data
input pin in the rising edge of the serial clock . When “A0”=“H”, the data is display data, and when
“A0”=“L”, the data is command.
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4.3
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
-
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.
4.4
Resetting the LCD module
The LCD module should be initialized by using /RES terminal.
While turning on the VDD and VSS power supply, maintain /RES terminal at LOW level. After the
power supply stabilized, release the reset terminal (/RES=HIGH)
4.5
Display Memory Map
Page address
data
LCD Display (front view)
D0
0
:
D7
D0
1
:
D7
D0
2
:
D7
D0
3
:
D7
D0
4
:
128x64 pixels
D7
D0
5
:
D7
D0
6
:
D7
D0
7
:
D7
Column Address
04h
83h
Note:
*1. ADC = 0 (normal)
*2. SHL Selection = 1 (reverse)
*3. Initial Display Line = 0
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4.6
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 oin
Display start
Sets the display RAM display start line
2
Display start line set
0 1 0 0 1
address
address
3
Set Page Address
0 1 0 1 0 1 1
Page
Address
Set the display RAM page address
Set Column Address
0 1 0 0 0 0 1
Col. Add.
Set the upper-4-bit of column address counter
(Upper-4-bits)
Upper
4
Set Column Address
0 1 0 0 0 0 0
Col. Add.
Set the lower-4-bit of column address counter
(Lower-4-bits)
Lower
Read the status data
5
Read Status
0 0 1
Status
0 0 0 0
6
Write Display Data
1 1 0
Write Data
Write data into the display RAM
7
Read Display 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
Reset Read-Modify-Write 0 1 0 1 1 1 0 1 1 1 0 Clear the “Read-Modify-Write” mode
14
Reset
0 1 0 1 1 1 0 0 0 1 0 Resets the LCD module
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 Select 0 1 0 0 0 1 0 0
setting
Set the built-in resistor ratio (Rb/Ra)
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 ST7565P data sheet.
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4.7
Display 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
0 1 0 * *
Electronic
Set reference voltage register
set
Control value (Display contrast value)
19
Compound Instruction:
Power Save
-
- - -
- - - - - - -
Display OFF + Entire Display ON
20
NOP
0 1 0 1 1 1 0 0 0 1 1 Non-operation command
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 ST7565P data sheet.
4.7.1 Power off the LCD Module
It recommends that enter Power Save mode before power off the LCD module.
4.7.2 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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4.8
Basic Operating Sequence (example)
4.8.1 Initialization Sequence
Code Function
hex
Note
Turn on Power Supply VDD & VSS
While maintaining /RES at LOW
-
- -
-
-
-
-
-
-
-
-
↓
Wait until power supply is stabilized
-
- -
-
-
-
-
-
-
-
-
↓
Release the /RES Reset Signal
See AC Characteristics section
(/RES = HIGH)
-
- -
-
-
-
-
-
-
-
for timing details
↓
LCD bias = 1/9
0 1 0 1 0 0 0 1 0
A2h
LCD panel Characteristic
↓
ADC = normal
0 1 0 1 0 0 0 0 0
A0h
No flip on x-direction (SEG)
↓
SHL = reverse
0 1 1 0 0 1 0 0 0
C8h
Flip on y-direction (COM)
↓
Initial Display Line=0
0 0 1 0 0 0 0 0 0
40h
i.e. Display RAM “page 0 - D0”
Matched to top line of the LCD
↓
Power Control
Voltage Follower = OFF
Turn on the internal Voltage
Voltage Regulator = OFF
0 0 0 1 0 1 1 0 0
2Ch
Converter and wait until VOUT
Voltage Converter = ON
stable.
Delay 50ms
-
- -
-
-
-
-
-
-
-
↓
Power Control
Voltage Follower = OFF
Turn on the Internal Voltage
Voltage Regulator = ON
0 0 0 1 0 1 1 1 0
2Eh
Regulator and wait until VOUT
Voltage Converter = ON
stable.
Delay 50ms
-
- -
-
-
-
-
-
-
-
↓
Power Control
Turn on the internal Voltage
Voltage Follower = ON
Follower and wait until VOUT
Voltage Regulator = ON
0 0 0 1 0 1 1 1 1
2Fh
stable
Voltage Converter = ON
Delay 50ms
-
- -
-
-
-
-
-
-
-
↓
Regulator Resistor Select
0 0 0 1 0 0 1 0 1
25h
Set the built-in resistor ratio to
middle
↓
Set to the middle of the range
Set Reference Voltage Mode
0 1 0 0 0 0 0 0 1
81h
It may be adjusted for achieving
the best display contrast
Set Reference Voltage Resistor
0 0 0 1 0 0 0 0 0
20h
↓
Display ON
0 1 0 1 0 1 1 1 1
AFh
Turn on the LCD display
↓
Set Page Address = 0
0 1 0 1 1 0 0 0 0
B0h
Specify the Display Data RAM
page address to 00h
↓
Set Column Address (Upper-4bit=0)
0 0 0 0 1 0 0 0 0
10h
Specify the Display Data RAM
Set Column Address (Lower-4bit=4)
0 0 0 0 0 0 1 0 0
04h
column address to 00h
↓
Write data to Display Data RAM.
Write Display Data
1
Display Data
After write, the internal Column
Address Counter will be
increased by 1 automatically
↓
Write Other Display Data …
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5. Design and Handling Precaution
1.
The LCD panel is made by glass. Any mechanical shock (eg. dropping form high place)
will damage the LCD module.
2.
Do not add excessive force on the surface of the display, which may cause the Display
color change abnormally.
3.
The polarizer on the LCD is easily get scratched. If possible, do not remove the LCD
protective film until the last step of installation.
4.
Never attempt to disassemble or rework the LCD module.
5.
Only Clean the LCD with Isopropyl Alcohol or Ethyl Alcohol. Other solvents (eg. water)
may damage the LCD.
6.
When mounting the LCD module, make sure that it is free form twisting, warping and
distortion.
7.
Ensure to provide enough space (with cushion) between case and LCD panel to prevent
external force adding on it, or it may cause damage to the LCD or degrade the display
result.
8.
Only hold the LCD module by its side. Never hold LCD module by add force on the heat
seal or TAB.
9.
Never add force to component of the LCD module. It may cause invisible damage or
degrade of the reliability.
10.
LCD module could be easily damaged by static electricity. Be careful to maintain an
optimum anti-static work environment to protect the LCD module.
11.
When peeling off the protective film from LCD, static charge may cause abnormal
display pattern. It is normal and will resume to normal in a short while.
12.
Take care and prevent get hurt by the LCD panel sharp edge.
13.
Never operate the LCD module exceed the absolute maximum ratings.
14.
Keep the signal line as short as possible to prevent noisy signal applying to LCD module.
15.
Never apply signal to the LCD module without power supply.
16.
IC chip (eg. TAB or COG) is sensitive to the light. Strong lighting environment could
possibly cause malfunction. Light sealing structure casing is recommend.
17.
LCD module reliability may be reduced by temperature shock.
18.
When storing the LCD module, avoid exposure to the direct sunlight, high humidity, high
temperature or low temperature. They may damage or degrade the LCD module
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