DISPLAY Elektronik GmbH
LCD MODULE
DEM 20486 SBH-PW-N
Product Specification
Version:6.1.2
12/June/2009
GENERAL SPECIFICATION
MODULE NO. :
DEM 20486 SBH-PW-N
CUSTOMER P/N:
Version No. Change Description Date
0 ORIGINAL VERSION 17.12.2002
1 ADDING VERSION 25.07.2003
2 ADDING VERSION 04.11.2003
3
4 ADDING VERSION 14.06.2005
5 MODIFY PCB DESCRIPTION 19.06.2006
6 MODIFY SECTION 6.1 27.04.2007
6.1.2 CHANGE IC 17.03.2009
6.1.2 CHANGE LED-RESISTOR 12.06.2009
CHANGE EXTERNAL
14.11.2003
DIMENSIONS
PREPARED BY: XYP DATE: 17.03.2009
APPROVED BY: MH DATE: 17.03.2009
DEM 20486 SBH-PW-N Product Specification
CONTENTS
1. FUNCTIONS & FEATURES..........................................................................................................................2
2. MECHANICAL SPECIFICATIONS.............................................................................................................2
3. BLOCK DIAGRAM ........................................................................................................................................3
4. EXTERNAL DIMENSIONS...........................................................................................................................3
PIN ASSIGNMENT.........................................................................................................................................4
5.
6.
PCB DRAWING AND DESCRIPTION.........................................................................................................5
7. BACKLIGHT & SWITCH..............................................................................................................................6
8. DISPLAY DATA RAM (DDRAM)..................................................................................................................7
9. MAXIMUM ABSOLUTE LIMIT...................................................................................................................7
10. ELECTRICAL CHARACTERISTICS........................................................................................................8
11. CONTROL AND DISPLAY COMMAND..................................................................................................10
12. STANDARD CHARACTER PATTERN (ST7066U-0A-B) ......................................................................11
LCD MODULES HANDLING PRECAUTIONS......................................................................................12
13.
14.
OTHERS.......................................................................................................................................................12
Version: 6.1.2 PAGE:1
DEM 20486 SBH-PW-N Product Specification
1. FUNCTIONS & FEATURES
MODULE NAME LCD Type
DEM 20486 SBH-PW-N STN Blue Transmissive Negative Mode
z Viewing Direction : 6 o’clock
z Driving Scheme : 1/16 Duty Cycle, 1/5 Bias
z Power Supply Voltage : 5.0 Volt (typ.)
z V
LCD
(V
) : 4.5 Volt (typ.)
DD-V0
z Backlight : LED, White, Lightguide
z Display contents : 20 x 4 Characters
z Internal Memory : CGROM (13,200 bits )
: CGRAM (64 x 8 bits )
: DDRAM (80 x 8 bits for Digits)
z CGROM : CGROM of the ST7066U-0A-B
z Interface : Easy Interface with a 4-bit or 8-bit MPU
z Operating Temperature : -20°C to +70°C
z Storage Temperature : -30°C to +80°C
2. MECHANICAL SPECIFICATIONS
z Module Size : 98.00 x 60.00 x 14.50 mm
z Character Pitch : 4.10 x 7.00 mm
z Character Size : 3.45 x 6.35 mm
z Character Font : 5 x 8 dots
z Dot Size : 0.65 x 0.75 mm
z Dot Pitch : 0.80 x 0.70 mm
z Dot Gap : 0.05 mm
Version: 6.1.2 PAGE:2
DEM 20486 SBH-PW-N Product Specification
3. BLOCK DIAGRAM
DB0~DB7
E
R/W
LCD
COM1~COM16
Controller
RS
V0
VDD
VSS
LSI
ST7066U-0AB
SEG1~SEG40
Control signals
LCD PANEL
4 Line x 20 Characters
SEG41~SEG120
SEGMENT
DRIVER
ST7063
SEGMENT
DRIVER
ST7063
SEG121~SEG200
A
K
BACKLIGHT
4. EXTERNAL DIMENSIONS
Version: 6.1.2 PAGE:3
DEM 20486 SBH-PW-N Product Specification
5. PIN ASSIGNMENT
Pin No. Symbol
1 VSS
2 VDD
3 V0 Power Supply for LCD
4 RS
5 R/W
6 E Enable
7 DB0
8 DB1
9 DB2
10 DB3
11 DB4
12 DB5
13 DB6
14 DB7
15 LED-(K) Place also refer to 6.1 PCB Drawing and description
16 LED-(A) Place also refer to 6.1 PCB Drawing and description
Function
Ground terminal of module
Power supply of module +5V
Register Select
RS=0…Instruction Register
RS=1…Data Register
Read or Write
R/W=1…Read
R/W=0…Write
Bi-directional Data Bus, Data Transfer is performed
Once, thru DB0~DB7, in the case of interface data.
Length is 8-bits; and twice, thru DB4~DB7 in the case
of interface data length is 4-bits.
Upper four bits first then lower four bits.
Version: 6.1.2 PAGE:4
DEM 20486 SBH-PW-N Product Specification
6. PCB DRAWING AND DESCRIPTION
PCB Drawing
Note: The part no. DEM20486 is printed on the PCB.
DESCRIPTION:
6-1-1.The polarity of the pin 15 and the pin 16
LED Polarity(1) LED Polarity(2)
15 Pin 16Pin 15 Pin 16 Pin
Anode Cathode Cathode Anode
J3=J5=open J2=J4=closed J3=J5= closed J2=J4= open
Note: In application module, J2=J4= open and J3=J5=closed
6-1-2. The metal-bezel is set be on ground when the J1 is closed.
Note: In application module, J1=closed
6-1-3.The LED resistor should can be bridged when the J6 is open.
Note: In application module, J6=open
6-1-4.The R7 and the R8 are the LED resistor.
Note: In application module, R7=33 Ohm, R8=47 Ohm.
Version: 6.1.2 PAGE:5
DEM 20486 SBH-PW-N Product Specification
7. BACKLIGHT & SWITCH
Item Symbol MIN. TYP. MAX. Unit Conditions
Forward Voltage Vf 4.0 4.2 V If=60mA
Forward Current If 60 mA
Power Dissipation Pd 0.28 W If=60mA
Reverse Voltage VR 4.0 V
Reverse Current IR 0.8 mA
Luminous Intensity Lv 60 80 cd/m
Luminous Uniformity ΔLv 70 % If=4.0V
Emission Wavelength
X 0.27 0.3
Y 0.75 0.315
nm
2
If=15mA, Ta=25°C
If=4.0V
Each chip
Version: 6.1.2 PAGE:6
DEM 20486 SBH-PW-N Product Specification
8. DISPLAY DATA RAM (DDRAM)
FIRST
LINE
SECOND
LINE
THIRDD
LINE
FOURTH
LINE
1
00
01
41
40
14 15
5554
5
02
42
16
56
4
3
04
03
44
43
17
18
57
58
2
05
45
19
59
6
7
8
06
07
47
46
1A 1B
5B5A
9
10
09
08
48
49
1D 1E 1F
1C
5C
11
0A
4A
14
12
13
0B
0C
4B
4C
20 21 22 23 24 25 26 27
5F5E5D
15
0D
0E4E0F 10
4D
16
4F
17
50
18 19
11
51
20
12
13
52 53
6766656463626160
9. MAXIMUM ABSOLUTE LIMIT
Item Symbol Standard value Unit
Power supply voltage (1) VDD -0.3~+7.0 V
Power supply voltage (2) V0 V
Input voltage VIN -0.3~VDD+0.3 V
Operating temperature Topr -20~+70 °C
Storage temperature Tstg -30~+80 °C
*Voltage greater than above may damage to the Circuit.
-13.5~VDD+0.3 V
DD
VDD＞V1＞V2＞V3＞V4＞V5
Version: 6.1.2 PAGE:7
DEM 20486 SBH-PW-N Product Specification
10. ELECTRICAL CHARACTERISTICS
10-1 DC Characteristics
Item Symbol
Operating Voltage V
Supply Current I
LCD Driving Voltage V
DD
DD
3.0 4.5 13.0 VDD-V5 (1/5,1/4 Bias) V
LCD
10-2 AC Characteristics
10-2-1 Write mode
Characteristic Symbol Min Type Max Unit Test PIN
E Cycle Time t
E Rise Time t
E Fall Time t
E Pulse width t
Address Setup Time t
Address Hold Time t
Data Set-up Time t
Data Hold Time t
Standard Value
Test Condition Unit
MIN TYP MAX
4.5 5 5.5 ------- V
---- 0.35 0.6 VDD=5V,fosc=270kHz mA
C
R
F
W
SU1
H1
SU2
H2
1200 --- --- ns E
--- --- 25 ns E
--- --- 25 ns E
140 --- --- ns E
0 --- --- ns R/W,RS,E
10 --- --- ns R/W,RS,E
40 --- --- ns DB0~DB7
10 --- --- ns DB0~DB7
RS
R/W
DB0~DB 7
E
VIH1
VIL1
tAS
tPW
tr
tDSW
Valid Data
tAH
VIL1
tAH
tr
tH
tC
Version: 6.1.2 PAGE:8
DEM 20486 SBH-PW-N Product Specification
10-2-2 Read mode
Characteristic Symbol Min Type Max Unit Test PIN
E Cycle Time t
E Rise Time t
E Fall Time t
E Pulse width tp
Address Setup Time t
Address Hold Time t
Data Setup Time t
Data Hold Time t
VIH1
RS
V
IL1
C
R
F
W
AS
AH
DDR
H
1200 --- --- ns E
--- --- 25 ns E
--- --- 25 ns E
140 --- --- ns E
0 --- --- ns R/W,RS,E
10 --- --- ns R/W,RS,E
--- --- 100 ns DB0~DB7
10 --- --- ns DB0~DB7
R/W
E
DB0~DB7
tAS
tPW
tr
tDDR
Val id Data
tC
tAH
tAH
tr
tH
Version: 6.1.2 PAGE:9
DEM 20486 SBH-PW-N Product Specification
11. CONTROL AND DISPLAY COMMAND
Command RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Clear
Display
Return
home
Entry mode
Set
0 0 0 0 0 0 0 0 0 1 1.52ms
0 0 0 0 0 0 0 0 1 x 1.52ms
0 0 0 0 0 0 0 1 I/D S 37us
Execution time
(fosc=270KHz)
Remark
Write”20H” to DDRAM. And set
DDRAM address to “00H” from
AC
Set DDRAM address to “00H”
from AC and return cursor to its
original position if shifted. The
contents of DDRAM are not
changed.
Sets cursor move direction and
specifies display shift. These
operations are performed during
data write and read.
Display
on/off
control
Cursor
or
Display
Shift
function
Set
Set
CGRAM
address
Set
DDRAM
address
Read busy
flag&
address
0 0 0 0 0 0 1 D C B 37us
0 0 0 0 0 1 S/C R/L x x 37us
0 0 0 0 1 DL N F x x 37us
0 0 0 1 AC5 AC4 AC3 AC2 AC1 AC0 37us
0 0 1 AC6 AC5 AC4 AC3 AC2 AC1 AC0 37us
0 1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0 0us
D=1: entire display on
C=1: cursor on
B=1: cursor position on
Set cursor moving and display
shift control bit, and the direction,
without changing DDRAM data.
DL: interface data is 8/4 bits
N: number of line is 2/1
F: font size is 5x11/5x8
Set CGRAM address in address
counter
Set DDRAM address in address
counter
Whether during internal operation
or not can be known by reading
BF. The contents of address
counter can also be read.
Write data
to RAM
Read data
from RAM
1 0 D7 D6 D5 D4 D3 D2 D1 D0 37us
1 1 D7 D6 D5 D4 D3 D2 D1 D0 37us
Write data into internal RAM
(DDRAM/CGRAM)
Read data from internal RAM
(DDRAM / CGRAM)
Note:
Be sure the ST7066U is not in the busy state (BF=00 before sending an instruction from the MPU to
the ST7066U. If an instruction is sent without checking the busy flag, the time between the first
instruction and next instruction will take much longer than the instruction time itself. Refer to
instruction table for the list of each instruction execution time.
Version: 6.1.2 PAGE:10
DEM 20486 SBH-PW-N Product Specification
12. STANDARD CHARACTER PATTERN (ST7066U-0A-B)
U p p e r(4b it)
Lo w e rr(4 b it)
0000
0000
CG RAM
( 1 )
0001 0010 0011 0100 0101 0110 0111 1000 1001 10010 1011 1100 1101 1110 1111
0001
0010
0011
0100
0101
0110
0111
1000
( 2 )
( 3 )
( 4 )
( 5 )
( 6 )
( 7 )
( 8 )
( 1 )
1001
1010
1011
1100
1101
1110
1111
( 2 )
( 3 )
( 4 )
( 5 )
( 6 )
( 7 )
( 8 )
Version: 6.1.2 PAGE:11
DEM 20486 SBH-PW-N Product Specification
13. LCD MODULES HANDLING PRECAUTIONS
Please remove the protective foil of polarizer before using.
The display panel is made of glass. Do not subject it to a mechanical shock by dropping it from a high place, etc.
If the display panel is damaged and the liquid crystal substance inside it leaks out, do not get any in your mouth. If
the substance come into contact with your skin or clothes promptly wash it off using soap and water.
Do not apply excessive force to the display surface or the adjoining areas since this may cause the color tone to
vary.
The polarizer covering the display surface of the LCD module is soft and easily scratched. Handle this polarize
carefully.
To prevent destruction of the elements by static electricity, be careful to maintain an optimum work environment.
-Be sure to ground the body when handling the LCD module.
-Tools required for assembly, such as soldering irons, must be properly grounded.
-To reduce the amount of static electricity generated, do not conduct assembly and other work under dry conditions.
-The LCD module is coated with a film to protect the display surface. Exercise care when peeling off this protective
film since static electricity may be generated.
Storage precautions
When storing the LCD modules, avoid exposure to direct sunlight or to the light of fluorescent lamps. Keep the
modules in bags designed to prevent static electricity charging under low temperature / normal humidity conditions
(avoid high temperature / high humidity and low temperatures below 0°C). Whenever possible, the LCD modules
should be stored in the same conditions in which they were shipped from our company.
14. OTHERS
Liquid crystals solidify at low temperature (below the storage temperature range) leading to defective orientation of
liquid crystal or the generation of air bubbles (black or white). Air bubbles may also be generated if the module is
subjected to a strong shock at a low temperature.
If the LCD modules have been operating for a long time showing the same display patterns may remain on the
screen as ghost images and a slight contrast irregularity may also appear. Abnormal operating status can be resumed
to be normal condition by suspending use for some time. It should be noted that this phenomena does not adversely
affect performance reliability.
To minimize the performance degradation of the LCD modules resulting from caused by static electricity, etc.
exercise care to avoid holding the following sections when handling the modules:
- Exposed area of the printed circuit board
- Terminal electrode sections
Version: 6.1.2 PAGE:12
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