Topway LM6020FCW-2 User manual

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LM6020FCW-2
LCD Module User Manual
Prepared by:
Li KeKe
Checked by: Approved by:
Date: 2020-11-26 Date: Date:
Rev. Descriptions Release Date
0.1 New release 2020-11-26

TOPWAY LCD Module User Manual LM6020FCW-2
URL: www.topwaydisplay.com Document Name: LM6020FCW-2-Manual-Rev0.1.DOC
Page: 2 of 14
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........................................................................................................................ 10
4.1 Application circuit(Example)............................................................................................................................................................10
4.2 Adjusting the Display Contrast........................................................................................................................................................ 10
4.3 Basic Setting...................................................................................................................................................................................... 10
4.4 Resetting the LCD module.............................................................................................................................................................. 10
4.5 Display Memory Map........................................................................................................................................................................11
4.6 Display Commands...........................................................................................................................................................................12
5. Design and Handling Precaution....................................................................................................... 14

TOPWAY LCD Module User Manual LM6020FCW-2
URL: www.topwaydisplay.com Document Name: LM6020FCW-2-Manual-Rev0.1.DOC
Page: 3 of 14
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 : 1/65 duty, 1/10 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 : 44.9x 32.6 x 8.9MAX (mm)
(See attached Outline Drawing for details)
1.3 Block Diagram
BLA
VDD
UC1628c o
r
e
q
uivalent
VSS
CD,/CS1, RESET,WR0,WR1 ,
VLCD,VB0-,VB0+,VB1-,VB1+,
Backlight Circuit
LCD Panel
128×64Pixels
BLK
BM0,BM1,

TOPWAY LCD Module User Manual LM6020FCW-2
URL: www.topwaydisplay.com Document Name: LM6020FCW-2-Manual-Rev0.1.DOC
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1.4 Terminal Functions
Pin No.
PIN
Name I/O
Descriptions
8080 mode
(default ) 6800 mode 4-SPI mode I2C mode
1
/CS1 I
Chip Select
/CS=L, enable access to the LCD module
/CS=H, disable access to the LCD module
Not used,
connect to VSS
2
RESET I
Reset signal
/RES = L, Initialization is executed
/RES = H, Normal running.
3
CD I
Register Select
D/C = H, Transferring the Display Data
D/C = L, Transferring the Control Data
Not used,
connect to VSS
4
WR0 I
WR0=LH,
WR1=H;
Data or
Instruction
latch into the
LCD module
WR0=H,WR1=
H;
Data or Status
read from the
LCD module
WR0=L,WR1=H
L;
Data or Status
latch into the
LCD module
Not used,
connect to
VSS
Not used,
connect to VSS
5
WR1 I
WR0=LH,
WR1=H;
Data or
Instruction
latch into the
LCD module
6D0
I/O
8-bit Data bus;
Three state I/O terminal for
display data or instruction data
when /CS=H, D0~D7=High
Impedance.
In serial modes, connect D[0] to
SCK, D[3] to SDAI for write and
D[5:4] to SDAO for read.
SDAI and SDAO may be
connected together if necessary.
Connect unused pins to VSS.
：：
13
D7
14 VDD PPositive power supply
15 VSS PNegative power supply,0V
16,17 NC --
18 VB0-
P
LCD Bias Voltages. These are the voltage sources to provide SEG d
riving currents.
19 VB0+
20 VB1-
21 VB1+
22~27 NC --
28 VLCD P High voltage LCD Power Supply
29 NC --
30 BM0
I
Bus mode;The interface bus mode is determined by BM[1:0]:
Mode BM[1;0]
8080
(
8-bit
)
10
6800
(
8-bit
)
11
4-wire SPI w/ 8-bit token
(
S8
)
01
2-wire SPI(I²C) 00
31
BM1
32 NC --

TOPWAY LCD Module User Manual LM6020FCW-2
URL: www.topwaydisplay.com Document Name: LM6020FCW-2-Manual-Rev0.1.DOC
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2. Absolute Maximum Ratings
Items Symbol Min. Max. Unit Condition
Supply Voltage VDD -0.3 +4.0 V VSS =0V
Input Voltage VIN -0.3 +4.0 V VSS =0V
Operating Temperature TOP -40 +70 CNo Condensation
Storage Temperature TST -40 +80 CNo 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
VSS=0V, VDD=3.3V, TOP=25C
Items Symbol MIN. TYP. MAX. Unit Condition /
Application Pin
Operating Voltage VDD 3.0 3.3 3.6 V VDD
Input High Voltage VIH 0.8xVDD -V
DD VREST,/CS1,
D0~D7,CD,WR0,W
R1,BM0,BM1
Input Low Voltage VIL VSS -0.2xV
DD V
Operating Current IDD -0.41.45mAVDD
3.2 LED Backlight Circuit Characteristics
VSS=0V,BLA=3.3V, TOP =25C
Items Symbol MIN. TYP. MAX. Unit Applicable Pin
Forward Voltage VBLA -3.3- V
BLA
Forward Current IBLA -3440mA
BLA
Cautions:
Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.
VSS
BL
A
No.ofLED=2pcs

TOPWAY LCD Module User Manual LM6020FCW-2
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3.3 AC Characteristics
3.3.1 8080 Mode System Bus Timing
VDD=3.3V VSS=0V, TOP=25C
Item Symbol MIN. MAX. Unit
A
ddress setup time (CD) tas80 20 - ns
A
ddress hold time (CD) tah80 26 - ns
System cycle time (read) tcy80 560 - ns
System cycle time(write) tcy80 364 - ns
Read pulse width tpwr80 260 - ns
Write pulse width tpww80 163 - ns
High pulse width (read) thpw80 260 - ns
High pulse width (write) thpw80 163 - ns
Data setup time tds80 59 - ns
Data hold time tdh80 13 - ns
Data access time tacc80 - 260 ns
Data output disable time tod80 70 ns
Chip select setup time tcssa80 7 - ns
Chip select hold time tcsh80 7 - 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.

TOPWAY LCD Module User Manual LM6020FCW-2
URL: www.topwaydisplay.com Document Name: LM6020FCW-2-Manual-Rev0.1.DOC
Page: 7 of 14
3.3.2 6800 Mode System Bus Timing
VSS=0V, VDD=3.3V, TOP=25C
Item Symbol MIN. TYP. MAX. Unit
A
ddress setup time t
A
S68 15 - - ns
A
ddress hold time tAH68 20 - - ns
System cycle time(WRITE) tCY68 280 - - ns
/WR L pulse width(WRITE) tLPW68 125 - - ns
/WR H pulse width(WRITE) tPWW68 125 - - ns
System cycle time(READ) tCY68 430 - - ns
/RD L pulse width(READ) tLPW68 200 - - ns
/RD H pulse width(READ) tPWR 200 - - ns
WRITE Data setup time tDS68 45 - - ns
WRITE Data hold time tDH68 10 - - ns
READ access time tACC68 - - 200 ns
READ Output disable time tOD68 100 - - 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.

TOPWAY LCD Module User Manual LM6020FCW-2
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3.3.3 4-wire SPI w/ 8-bit token (S8)
VDD=3.3V VSS=0V, TOP=25C
Item Symbol MIN. MAX. Unit
A
ddress setup time (CD) Tass8 0 - ns
A
ddress hold time (CD) T
A
Hs8 20 - ns
System cycle time (read) Tcys8 559 - ns
System cycle time (write) Tcys8 286 - ns
Low pulse width(read) tLPWS8 260 - ns
Low pulse width(write) tLPWS8 124 - ns
High pulse width (read) Thpws8 260 - ns
High pulse width (write) Thpws8 124 - ns
Data setup time Tdss8 33 - ns
Data hold time Tdhs8 20 - ns
Data access time Taccs8 - 260 ns
Data output disable time Tods8 21 ns
Chip select setup time tCSSAs8 7 - ns
Chip select hold time tCSHs8 20 - 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.

TOPWAY LCD Module User Manual LM6020FCW-2
URL: www.topwaydisplay.com Document Name: LM6020FCW-2-Manual-Rev0.1.DOC
Page: 9 of 14
3.3.4 I2C Mode System Bus Timing
VDD=3.3V VSS=0V, TOP=25C
Item Symbol MIN. MAX. Unit
SC
K
cycle time(read) tCYI2C 689 - ns
SC
K
cycle time(write) tCYI2C 299 - ns
Low pulse width(read) tLPWI2C 325 - ns
Low pulse width(write) tLPWI2C 130 - ns
High pulse width(read) tHPWI2C 325 - ns
High pulse width(write) tHPWI2C 130 - ns
Rise time and fall time tr, t
f
--ns
Data setup time tSSDAI2C 72 - ns
Data hold time tHDAI2C 13 - ns
START Setup time tSSTAI2C 13 - ns
START Hold time tHSTAI2C 72 - ns
STOP setup time tSSTOI2C 13 - ns
Bus Free time between
STOP and START condition tBUF 98 - 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.
3.3.5 Reset Timing
VSS=0V, VDD=3.3V, TOP=25C
Item Symbol MIN. TYP. MAX. Unit
Reset time t
r
4-- μs
Reset LOW pulse width trw 150 - - ms
Note:
*1.All timing is using 20% and 80% of VDD as the reference.

TOPWAY LCD Module User Manual LM6020FCW-2
URL: www.topwaydisplay.com Document Name: LM6020FCW-2-Manual-Rev0.1.DOC
Page: 10 of 14
4. Function specifications
4.1 Application circuit(Example)
4.2 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.
4.3 Basic Setting
To drive the LCD module correctly and provide normally display, please use the following setting
- Set Bias 1/10
- Set Duty 1/65
-MY=1,MX=0
- AP=0 (Normal display)
-AnalogSET
- Power control
- Display 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)

TOPWAY LCD Module User Manual LM6020FCW-2
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Page: 11 of 14
4.5 Display Memory Map
Page address data LCD Display (front view)
0
D7
:
D0
1
D7
:
D0
2
D7
:
D0
3
D7
:
D0
4
D7
:
D0
5
D7
:
D0
6
D7
:
D0
7
D7
:
D0
Column Address 00h 7Fh
Note:
*1.MY=1
*2.MX=0
*3.Initial Display Line=0
128x64
p
ixels

TOPWAY LCD Module User Manual LM6020FCW-2
URL: www.topwaydisplay.com Document Name: LM6020FCW-2-Manual-Rev0.1.DOC
Page: 12 of 14
4.6 Display Commands
The following is a list of host commands supported by UC1628c:

TOPWAY LCD Module User Manual LM6020FCW-2
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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 UC1628c data sheet.
4.6.1 Power off the LCD Module
It recommends that enter Sleep Mode before power off the LCD module.
4.6.2 Refreshing The LCD Module
It recommends that the operating modes and display contents be refreshed periodically to prevent
the effect of unexpected noise.

TOPWAY LCD Module User Manual LM6020FCW-2
URL: www.topwaydisplay.com Document Name: LM6020FCW-2-Manual-Rev0.1.DOC
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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