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PDF LM240128RFC-1 Data sheet ( Hoja de datos )
| Número de pieza | LM240128RFC-1 | |
| Descripción | LCD Module | |
| Fabricantes | Shenzhen | |
| Logotipo |  |
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LM240128RFC-1
LCD Module User Manual
Prepared by:
Cai
Date: 2008-07-28
Checked by:
Date:
Approved by:
Date:
Rev. Descriptions
0.1 Preliminary release
URL: www.topwaydisplay.com
www.topwaysz.com
Release Date
2008-07-28
Document Name: LM240128RFC-1-Manual-Rev0.1.DOC
Page: 1 of 12
1 page  
TOPWAY
LCD Module User Manual
LM240128RFC-1
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
-20 +70 °C No Condensation
Storage Temperature
Cautions:
TST
-30 +80 °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
www.DataSheet34U.1.comDC Characteristics
Items
Operating Voltage
Input High Voltage
Input Low Voltage
Operating Current
Note: System clock=3MHz
Symbol
VDD
VIN
VIN
IDD
MIN.
3.0
0.8xVDD
VSS
-
TYP.
3.3
-
-
19.3
MAX.
3.6
VDD
0.2xVDD
69
VSS=0V, VDD =3.3V, TOP =25°C
Unit Applicable Pin
V VDD
V DB0~DB7, /WR, /RD, /CS,
RS, /RST
V DB0~DB7, /WR, /RD, /CS,
RS, /RST
mA VDD
3.2 LED Backlight Circuit Characteristics
Items
Symbol MIN.
TYP.
MAX.
BLK=0V, IfBLA=170mA, TOP =25°C
Unit Applicable Pin
Forward Voltage
VfBLA - 5.0 -
V BLA
Forward Current
Cautions:
IfBLA - 170 230 mA BLA
Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.
BLA
BLK No. of LED = 2X5pcs
URL: www.topwaydisplay.com
www.topwaysz.com
Document Name: LM240128RFC-1-Manual-Rev0.1.DOC
Page: 5 of 12
5 Page 
TOPWAY
LCD Module User Manual
LM240128RFC-1
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
01h
10h
www.DataSheet4U.com
11h
20h
Name
WLCR
(binary)
1100 1101
MISC
WCCR
1111 0010
0010 1001
DWLR
AWRR
0001 0000
0001 1101
(hex)
CD
F2
29
10
1D
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)
CLK_OUT=enable
INT and BUSY polarity = Hi Active
Clock speed = 8MHz
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 = 1D
21h
DWRR
0001 1101
1D Display Window Right Register = 1D
30h
AWBR
0111 1111
7F Active Window Bottom Register = 7F
31h
DWBR
1000 0000
80 Display Window Bottom Register = 80
40h
AWLR
0000 0000
00 Active Window Left Register = 00
41h
DWLR
0000 0000
00 Display Window Left Register = 00
50h
AWTR
0000 0000
00 Active Window Top Register = 00
51h
DWTR
0000 0000
00 Display Window Top Register = 00
81h
FRCA
0100 0000
40 Frame Rate Polarity Change at Common_A Register
90h
SCCR
0001 1111
1F Shift Clock Control Register (set to 67Hz)
F0h
FNCR
1010 0000
A0 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: LM240128RFC-1-Manual-Rev0.1.DOC
Page: 11 of 12
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