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PDF LM2068R Data sheet ( Hoja de datos )

Número de pieza LM2068R
Descripción LCD Module
Fabricantes Shenzhen 
Logotipo Shenzhen Logotipo



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LM2068R
LCD Module User Manual
Shenzhen TOPWAY Technology Co., Ltd.
Rev. Descriptions
0.1 Preliminary new release
URL: www.topwaydisplay.com
www.topwaysz.com
Release Date
2006-07-31
Document Name: LM2068R-Manual-Rev0.1.doc
Page: 1 of 12

1 page




LM2068R pdf
TOPWAY
LCD Module User Manual
LM2068R
2. Absolute Maximum Ratings
Items
Symbol
Min.
Max. Unit Condition
Supply Voltage
Input Voltage
VDD
0
+5.5
V VSS = 0V
VIN
VSS-0.3 VDD+0.3
V VSS = 0V
Operating Temperature
TOP
-10 +60 °C No Condensation
Storage Temperature
Cautions:
TST
-20 +70 °C No Condensation
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
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3.1 DC Characteristics
Items
Operating Voltage
Input High Voltage
Input Low Voltage
Operating Current
Symbol
VDD
VIN
VIN
IDD
MIN.
4.7
0.8xVDD
0
-
TYP.
5.0
-
-
18.0
VSS=0V, VDD =5.0V, TOP =25°C
MAX. Unit Applicable Pin
5.3 V VDD
VDD
V
DB0~DB7, /WR, /RD, /CS,
RS, /RST
0.1x VDD
V
DB0~DB7, /WR, /RD, /CS,
RS, /RST
45.0
mA VDD
3.2 LED Backlight Circuit Characteristics
Items
Symbol MIN.
TYP.
MAX.
BLK=0V, IfBLA=100mA, TOP =25°C
Unit Applicable Pin
Forward Voltage
VfBLA - 5.0 -
V BLA
Forward Current
Cautions:
IfBLA - 100 130 mA BLA
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-Manual-Rev0.1.doc
Page: 5 of 12

5 Page





LM2068R arduino
TOPWAY
LCD Module User Manual
LM2068R
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 Register
Value
Value
Add
00h
Name
WLCR
(binary)
1100 1101
10h WCCR 0010 1001
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11h
20h
21h
30h
31h
40h
41h
50h
51h
81h
90h
A0h
F0h
DWLR
AWRR
DWRR
AWBR
DWBR
AWLR
DWLR
AWTR
DWTR
FRCA
SCCR
INTR
FNCR
0001 0000
0010 0111
0010 0111
1110 1111
1110 1111
0000 0000
0000 0000
0000 0000
0000 0000
0100 0000
0000 0100
0000 1000
1010 0000
(hex)
CD
29
10
27
27
EF
EF
00
00
00
00
40
04
08
A0
Note
Power Mode = Normal Mode
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
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
External Char ROM = enable
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-Manual-Rev0.1.doc
Page: 11 of 12

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