LM2068R-3 [TOPWAY]
LCD Module User Manual;
| 型号： | LM2068R-3 |
| 厂家： | 
TOPWAY |
| 描述： | LCD Module User Manual CD |
| 文件： | 总12页 (文件大小：778K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM2068R-3
LCD Module User Manual
Prepared by:
Checked by:
Approved by:
黄德新
Date:2019-06-19
Date:
Date:
Rev. Descriptions
Release Date
2007-07-13
2019-06-19
0.1
0.2
Preliminary new release
Update 2. Absolute Maximum Ratings
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 1 of 12
TOPWAY
LCD Module User Manual
LM2068R-3
Table of Content
1. Basic Specifications..............................................................................................................3
1.1
1.2
1.3
1.4
Display Specifications ............................................................................................................................................3
Mechanical Specifications......................................................................................................................................3
Block Diagram........................................................................................................................................................3
Terminal Functions.................................................................................................................................................4
2. Absolute Maximum Ratings..................................................................................................5
3. Electrical Characteristics ......................................................................................................5
3.1
3.2
3.3
DC Characteristics .................................................................................................................................................5
LED Backlight Circuit Characteristics.....................................................................................................................5
AC Characteristics .................................................................................................................................................6
4. Function Specifications.........................................................................................................7
4.1
4.2
4.3
4.4
4.5
4.6
Adjusting the Display Contrast...............................................................................................................................7
Resetting the LCD module.....................................................................................................................................7
Display Pixel Map...................................................................................................................................................7
Control Data and Command ..................................................................................................................................8
Register Table Summary .......................................................................................................................................8
Initialization Setting Example ............................................................................................................................... 11
5. Design and Handling Precaution........................................................................................12
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 2 of 12
TOPWAY
LCD Module User Manual
LM2068R-3
1. Basic Specifications
1.1 Display Specifications
1) LCD Display Mode
2) Display Color
: STN-Blue, Negative, Transmissive
: Display Data = “1” : Light Gray (*1)
: Display Data = “0” : Dark Blue (*2)
: 9 H
: 1/240 duty, 1/12 bias
: White LED
3) Viewing Angle
4) Driving Method
5) 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
: 99.5 x 71.1 x 9.5 (exclude FPC terminal)
see attached Outline Drawing for details
1.3 Block Diagram
BLA
BLK
Backlight Circuit
COM1
:
COM160
320 x 240 pixels
LCD Panel
COM161
:
COM240
Power
& Booster
Circuit
VOUT
VDD, VSS, V0
S6B0794
or equivalent
S6B0794
or equivalent
/WR, /RD, /CS, RS, /RST
DB0~DB7
RA8803 or equivalent
BUSY
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 3 of 12
TOPWAY
LCD Module User Manual
LM2068R-3
1.4 Terminal Functions
Pin
No.
1
2
3
4
5
6
Pin
Name
VSS
VDD
V0
/WR
/RD
/CS
I/O
Descriptions
Power
Power
Input
Input
Input
Input
0V Power Supply, GND
Positive Power Supply
LCD Contrast Reference Input
Write enable input, active LOW
Read enable input, active LOW
Chip Select Signal
/CS=LOW: Data IO is enabled
7
8
RS
Input
Input
I/O
Register Select
RS=HIGH: data on DB0 to DB7 is display data
RS=LOW: data on DB0 to DB7 is control data
/RST
Reset Signal:
/RST = L, Reset the LCD Module
/RST = H, Normal Running
9
:
DB0
:
8-bit bi-directional data bus
16
17
DB7
BUSY
OUTPUT Controller busy signal,
MCU should poll this signal before accessing the LCD module
Power Booster Output for V0
18
19
20
VOUT
BLA
BLK
Power
Power
Power
Positive Power Supply for LED backlight
Negative Power Supply for LED backlight
Note: For enable BUSY output, the REG[A0] D0, D1, D2 or D3 should be set to hi.
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 4 of 12
TOPWAY
LCD Module User Manual
LM2068R-3
2. Absolute Maximum Ratings
Items
Symbol
VDD
Min.
0
VSS-0.3
-30
Max.
+5.5
VDD+0.3
+70
Unit
V
V
°C
°C
Condition
VSS = 0V
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Cautions:
VSS = 0V
VIN
TOP
TST
No Condensation
No Condensation
-40
+80
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
Unit Applicable Pin
Items
Symbol
MIN.
TYP.
MAX.
VDD
Operating Voltage
VDD
3.0
3.3
3.6
V
DB0~DB7, /WR, /RD, /CS,
RS, /RST
Input High Voltage
VIN
0.8xVDD
-
VDD
V
DB0~DB7, /WR, /RD, /CS,
RS, /RST
VDD
Input Low Voltage
Operating Current
VIN
IDD
0
-
-
0.1x VDD
120
V
30
mA
3.2 LED Backlight Circuit Characteristics
BLK=0V, IfBLA=96mA, TOP =25°C
Items
Forward Voltage
Forward Current
Cautions:
Symbol
VfBLA
MIN.
-
-
TYP.
3.3
96
MAX.
Unit
V
Applicable Pin
BLA
-
BLA
IfBLA
130
mA
Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.
BLA
VSS
No. of LED = 6pcs
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 5 of 12
TOPWAY
LCD Module User Manual
LM2068R-3
3.3 AC Characteristics
VSS=0V, VDD=3.3V, System Clock=8MHz, TOP=25°C
Item
Symbol
tah8
taw8
tcyc8
tcc8
tds8
tdh8
tacc8
toh8
MIN.
13
79
1000
500
79
TYP.
MAX.
Unit
Ns
Ns
Ns
Ns
Address Hold Time
Address Setup Time
System Cycle Time
Strobe Pulse Width
Data Setup Time
Data Hold Time
Data Access Time
Output disable Time
-
-
-
-
-
-
-
-
13
-
13
-
-
-
-
413
-
Ns
Ns
Ns
Note: *1. Input signal rise/fall time should be less than 20ns
*2. System clock=8MHz
Bus Timing Diagram
3.3.1 Reset Timing
VSS=0V, VDD=3.3V, TOP=25°C
Item
Reset Time
Reset LOW pulse width
Symbol
trst
trsth
MIN.
320
65
TYP.
MAX.
Unit
ms
-
-
-
-
ms
Reset Timing Diagram
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 6 of 12
TOPWAY
LCD Module User Manual
LM2068R-3
4. Function Specifications
4.1 Adjusting the Display Contrast
A Variable-Resistor must be connected to the LCD module for providing a reference to V0.
Adjusting the VR will result the change of LCD display contrast.
The recommended value of VR is 25k to 50k
LCD module
VSS
V0
VOUT
4.2 Resetting the LCD module
The LCD module should be initialized by using /RST terminal.
While turning on the VDD and VSS power supply, maintain /RST terminal at LOW level. After the
power supply stabilized, release the reset terminal (/RST=HIGH)
4.3 Display Pixel Map
1,1
(D7)
2,1
(D6)
3,1
(D5)
4,1
(D4)
5,1
(D3)
316,1
(D4)
317,1
(D3)
318,1
(D2)
319,1
(D1)
320,1
(D0)
- - -
- - -
- - -
- - -
- - -
- - -
1,2
(D7)
2,2
(D6)
3,2
(D5)
4,2
(D4)
5,2
(D3)
316,2
(D4)
317,2
(D3)
318,2
(D2)
319,2
(D1)
320,2
(D0)
1,3
(D7)
2,3
(D6)
3,3
(D5)
4,3
(D4)
5,3
(D3)
316,3
(D4)
317,3
(D3)
318,3
(D2)
319,3
(D1)
320,3
(D0)
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
1,238
(D7)
2,238
(D6)
3,238
(D5)
4,238
(D4)
5,238
(D3)
316,238 317,238 318,238 319,238 320,238
(D4) (D3) (D2) (D1) (D0)
- - -
- - -
- - -
- - -
- - -
- - -
1,239
(D7)
2,239
(D6)
3,239
(D5)
4,239
(D4)
5,239
(D3)
316,239 317,239 318,239 319,239 320,239
(D4) (D3) (D2) (D1) (D0)
1,240
(D7)
2,240
(D6)
3,240
(D5)
4,240
(D4)
5,240
(D3)
316,240 317,240 318,240 319,240 320,240
(D4) (D3) (D2) (D1) (D0)
Pixel mapping (Top View)
Based on the top view of the LCD module,
the 1, 1 (x, y) pixel is the upper-left pixel;
the 320, 240 (x, y) pixel is the lower-right pixel.
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 7 of 12
TOPWAY
LCD Module User Manual
LM2068R-3
4.4 Control Data and Command
The LCD module setting is controlled by the internal Register Values.
The Register Address and Register Value should be issued in sequence and they are addressed
as Control Data.
A full command sequence should be as follow.
Steps
/RD
1
1
/WR
0
0
RS
0
0
Data (DB0~ DB7)
Register Address
Register Value
1st
2nd
4.5 Register Table Summary
Reg.
Add
Reg.
Name R/W
Descriptions
PW1~PW0 : Power Mode
11=Normal Mode; 00=Off Mode
SR : Software Reset
WLCR
00h
R/W
1=reset all register (except DDRAM); 0=normal operation
CG : Display mode selection
1=Character Mode; 0=Graphic Mode
DP : Display on off control
1=normal display; 0=display off
BK : Full screen blinking control
1=blinking (blink time is set by CBTR); 0=normal;
DV : Full screen inverse control
1=normal; 0=inversed
CKN : Clock output Control (not applicable)
1=enable; 0=disable
MISC
APSR
ADSR
01h
02h
03h
R/W
R/W
R/W
PLR : Interrupt and Busy Polarity (not applicable)
1=active High; 0=active low
CKB1~CKB0 : Clock Speed Selection
00=3MHz; 01=4MHz; 10=8MHz; 11=12MHz
SP1~SP0 : ROM/RAM reading speed
00=speed0; 01=speed1; 10=speed2; 11=speed3
ORA : Font ROM Readable
1=enable; 0=disable
SRFS : Scrolling Reset for Start
1=enable; 0=disable
DADR : Display RAM Order (byte)
1=reverse; 0=normal
AUCM : Common Auto Scrolling
1=enable; 0=disable
AUSG : Segment Auto Scrolling
1=enable; 0=disable
Common or Segment Scrolling Selection
1=Segment Scrolling; 0=Common Scrolling
ARI : Auto-increase Cursor Position (in reading DDRAM operation)
1=enable; 0=disable
WCCR
10h
R/W
ALG : Chinese/English char alignment
1=enable; 0=disable
WDI : Store Current Data to DDRAM
1=directly; 0=invertly
WBC : Set Bold font (char mode only)
1=bold; 0=normal
AIX : Auto-increase Cursor Position (in writing DDRAM operation)
1=enable; 0=disable
CP : Cursor display control
1=on; 0=off
CK : Cursor blink control
1=blinking; 0=no blinking
CSD : Set cursor width
1=auto adjust, 0=fix width
CR3~CR0 : Cursor Height
DY3~DY0 : Line Distance
DWLR
11h
R/W
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 8 of 12
TOPWAY
Register Table Summary (cont’)
LCD Module User Manual
LM2068R-3
Reg.
Add
Reg.
Name R/W
Descriptions
GIM : Graphic Mode Cursor Auto Shifting Direction
MAMR
12h
R/W
1=Horizontal then Vertical; 0=Vertical then Horizontal
RM2~RM0 : Display Layer Selection
001=page1 only;
010=page2 only;
011=combine two layer; 000=gray scale mode
110=extended mode1, 111=extended mode2
OP1~OP2 : two layer mode setting
00=OR; 01=XOR; 10=NOR; 11=AND
WM1~WM0 : Layer Read/Write Selection
00=page0; 01=page1; 10=page2;
11=page1 & page2 at the same time
X5~X0: Active Window Right Register
A5~A0 : Display Window Right Register
Y7~Y0 : Active Window Bottom Register
B7~B0 : Display Window Bottom Register
SS5~SS0 : Active Window Left Register
C5~C0 : Display Window Left Register
SC7~SC0 : Active Window Top Register
D7~D0 : Display Window Top Register
RS5~RS0 : Cursor Poison X Register
AWRR
DWRR
AWBR
DWBR
AWLR
DWLR
AWTR
DWTR
CPXR
BGSG
CPYR
BGCM
EDCM
BTMR
FRCA
SCCR
FRCB
INTR
20h
21h
30h
31h
40h
41h
50h
51h
60h
61h
70h
71h
72h
80h
81h
90h
91h
A0h
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
DS5~DS0 : Segment Start Position of Scrolling Mode
RC7~RC0 : Cursor Position Y Register
CB7~CB0 : Common Start Position of Scrolling Mode
CD7~CD0 : Common Ending Position of Scrolling Mode
BT7~BT0 : Cursor Blink Time Register
Frame Rate Polarity Change at Common_A Register
CK7~CK0 : Shift Clock Control Register
Reserved
INK : Key Scan Interrupt Flag (read only)
1=detected; 0=not detected
INT : Touch Panel detect (read only)
1=touched; 0=untouched
INX : Cursor Column status (read only)
1=equal to INTX; 0=not equal to INTX
INTY : Cursor Row status (read only)
1=equal to INTY; 0=not equal to INTY
MSZ : Key Scan Interrupt output and BUSY output
1=enable key scan interrupt; 0=disable key scan interrupt
MSA : Touch Panel interrupt output and BUSY output
1=enable; 0=disable
MSX : INTX event interrupt output and BUSY output
1=enable; 0=disable
MSY : INTY event interrupt output and BUSY output
1=enable; 0=disable
(any bit of D0~D3 set to “1” could enable the busy signal output)
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 9 of 12
TOPWAY
Register Table Summary (cont’)
LCD Module User Manual
LM2068R-3
Reg.
Add
Reg.
Name R/W
Descriptions
KEN : Key Scan Enable Bit
KSCR
A1h
(not applicable)
R/W
1=enable; 0=disable
KSZ : Key Scan Matrix Selection
1=4x4; 0=8x8
KDT1~KDT0 : Key Scan Data Sampling Times
00=2xFRM; 01=4xFRM; 10=8xFRM; 11=16xFRM
KF2~KF0 : Key Scan Frequency Selection
000= 2xFRM, 001=4xFRM; 010=8xFRM; 011=16xFRM
100= 32xFRM, 001=64xFRM; 010=128xFRM; 011=256xFRM
KC7~KC0 : Key Scan Output
KSDR
KSER
INTX
A2h
R
(not applicable)
KR7~KR0 : Key Scan Data Input
A3h
(not applicable)
R
IX5~IX0 : Interrupt Column Setup Register
IY7~IY0 : Interrupt Row Setup Register
B0h
(not applicable)
R/W
R/W
R/W
INTY
B1h
(not applicable)
AZEN : Touch Panel Function
1=enable; 0=disable
TPCR
C0h
(not applicable)
AZOE : Touch Panel Data Output
1=enable; 0=disable
SCAN : Touch Panel Scan
1=enable; 0=disable
AS3~AS0 : Touch Panel Control Bits
ARDY : ADC Data Convert State
1=convert complete; 0=convert incomplete
ADET : Touch Event Indicate
1=touched; 0=untouched
TPSR
TPXR
RPYR
TPZR
LCCR
C1h
R/W
R
(not applicable)
TPX9~TPX2 : Touch Panel Segment data D9~D2
C8h
(not applicable)
TPY9~TPX2 : Touch Panel Common data D9~D2
C9h
(not applicable)
R
TPX1~TPX0 : Touch Panel Segment data D1~D0
TPY1~TPY0 : Touch Panel Common data D1~D0
CAh
(not applicable)
R
DZEN : LCD contrast control
1=disable; 0=enable
DAC4~DAC0 : LCD Contrast Control Value
D0h
R/W
FD7~FD0 : Pattern Data Register / Display Times of Gray Mode
PNDR
FNCR
E0h
F0h
R/W
R/W
TNS : External Char ROM
1=enable; 0=disable
BNK : ROM BANK Selection
1=Lower 256k ROM; 0=upper 256k ROM
RM1~RM0 : Font ROM Translate
00=GB(256k); 01=BIG5(512k); 10=GB(512k)
FDA : Fill Data to DDRAM
1=fill data to DDRAM enable; 0=no action;
ASC : Font ROM range select
1=decode as ASCII; 0=auto
ABS1~ABS0 : ASCII Block Selection
00=map to ASCII block 0; 01=map to ASCII block 1;
10=map to ASCII block 2; 11=map to ASCII block 3
FH1~FV0 : Font Horizontal Size
00=1x; 01=2x; 10=3x; 11=4x
FV1~FV0 : Font Vertical Size
00=1x; 01=2x; 10=3x; 11=4x
FVHT
F1h
R/W
Note:
*1. It is suggested to check the BUSY before sending the Control Data.
*2. For the details, please refer to RA8803 Data sheet.
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 10 of 12
TOPWAY
LCD Module User Manual
LM2068R-3
4.6 Initialization Setting Example
The following setting should be issue to LCD module after hardware reset.
(It is a basic example only; it could be adjusted if necessary.)
Register
Add
Register
Name
WLCR
Value
(binary)
1100 1101
Value
(hex)
CD
Note
Power Mode = Normal Mode
00h
Software Reset = Normal Operation
Display mode = Character Mode
Display on off control = normal display
Full screen blinking control = normal (no blinking)
Full screen inverse = normal (no inverse)
Auto-increase Cursor Position (in reading DDRAM operation) = disable
Chinese/English char alignment = disable
Store Current Data to DDRAM = directly
Set Bold font (char mode only) = normal
Auto-increase Cursor Position (in writing DDRAM operation) = enable
Cursor display control = off
WCCR
0010 1001
10h
29
Cursor blink control = no blinking
Set cursor width = auto adjust
Cursor Height = 1
Line Distance = 0
Active Window Right Register = 17
Display Window Right Register = 17
Active Window Bottom Register = 7F
Display Window Bottom Register = EF
Active Window Left Register = 00
Display Window Left Register = 00
Active Window Top Register = 00
Display Window Top Register = 00
Frame Rate Polarity Change at Common_A Register
Shift Clock Control Register (set to ~61Hz, when system clock=3MHz)
Enable the BUSY output with Key Scan Interrupt output
DWLR
0001 0000
11h
10
AWRR
DWRR
AWBR
DWBR
AWLR
DWLR
AWTR
DWTR
FRCA
SCCR
INTR
0010 0111
0010 0111
1110 1111
1110 1111
0000 0000
0000 0000
0000 0000
0000 0000
0100 0000
0000 0100
0000 1000
1010 0000
20h
21h
30h
31h
40h
41h
50h
51h
81h
90h
A0h
F0h
27
27
EF
EF
00
00
00
00
40
04
08
A0
External Char ROM = enable
FNCR
ROM BANK Selection = upper 256k ROM
Font ROM Translate = GB
Fill Data to DDRAM = no action
Font ROM range select = auto
ASCII Block Selection = map to ASCII block 0
Note:
Others un-mentioned register are using its hardware reset default value.
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 11 of 12
TOPWAY
LCD Module User Manual
LM2068R-3
5. Design and Handling Precaution
1.
2.
3.
The LCD panel is made by glass. Any mechanical shock (eg. dropping form high place)
will damage the LCD module.
Do not add excessive force on the surface of the display, which may cause the Display
color change abnormally.
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.
5.
Never attempt to disassemble or rework the LCD module.
Only Clean the LCD with Isopropyl Alcohol or Ethyl Alcohol. Other solvents (eg. water)
may damage the LCD.
6.
7.
When mounting the LCD module, make sure that it is free form twisting, warping and
distortion.
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.
11.
LCD module could be easily damaged by static electricity. Be careful to maintain an
optimum anti-static work environment to protect the LCD module.
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.
Take care and prevent get hurt by the LCD panel sharp edge.
Never operate the LCD module exceed the absolute maximum ratings.
Keep the signal line as short as possible to prevent noisy signal applying to LCD
module.
12.
13.
14.
15.
16.
Never apply signal to the LCD module without power supply.
IC chip (eg. TAB or COG) is sensitive to the light. Strong lighting environment could
possibly cause malfunction. Light sealing structure casing is recommend.
LCD module reliability may be reduced by temperature shock.
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
17.
18.
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM2068R-3-Manual-Rev0.2
Page: 12 of 12
相关型号：
©2020 ICPDF网 联系我们和版权申明