DEM 16481 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 : 5.0V (typ.)
z Backlight Type
z VLCD Adjustable For Best Contrast : 4.5V (typ.)
z Display contents : 16 x 4 Characters
z Internal Memory : CGROM (8,320 bits )
: CGRAM (64 x 8 bits )
: DDRAM (80 x 8 bits)
z CGROM : CGROM of the ST7066U-0A
z Operating Temperature : - 20°C to + 70°C
z Storage Temperature : - 30°C to + 80°C
z Interface : Easy Interface with a 4-bit or 8-bit MPU
: White Light guide
2. MECHANICAL SPECIFICATIONS
z Module Size : 87.00 x 60.00 x 13.50 mm
z Character Pitch : 3.55 x 5.35 mm
z Character Size : 2.95 x 4.75 mm
z Character Font : 5 x 8 dots
z Dot Size : 0.55 x 0.55 mm
z Dot Pitch : 0.60 x 0.60 mm
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DEM 16481 SBH-PW-N Product Specification
3. BLOCK DIAGRAM
LCD PANEL
DB0~DB7
E
R/W
RS
V
V
V
0
DD
SS
LCD
Controller
LSI
ST7066
COM1~COM16
SEG1~SEG40
Control signals
4line
*16
SEG41~SEG80
SEGMENT
DRIVER
ST7065
characters
SEG81~SEG160
SEGMENT
DRIVER
ST7063
A
K
BACKLIGHT
4. EXTERNAL DIMENSIONS
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DEM 16481 SBH-PW-N Product Specification
b
5. PIN ASSIGNMENT
Pin No. Symbol Function
1 VSS Ground terminal of module.
2 VDD Power terminal of module 5.0V.
3 V0 Power Supply for liquid crystal drive.
Register select
4 RS
5 R/W
6 E Read/Write Enable Signal
7 DB0
8 DB1
9 DB2
10 DB3
11 DB4
12 DB5
13 DB6
14 DB7
15 LED – (K) Please also refer to 6.1 PCB drawing and description.
16 LED + (A) Please also refer to 6.1 PCB drawing and description.
RS = 0…Instruction register
RS = 1…Data register
Read /Write
R/W = 1…Read
R/W = 0…Write
Bi-directional data bus, data transfer is performed once, thru DB0 to DB7, in
the case of interface data. Length is 8-bits; and twice, thru DB4 to DB7 in the
case of interface data length is 4bits.
its. Upper four bits first then lower four
6. PCB DRAWING AND DESCRIPTION
Note: The part no. DEM16481 is printed on the PCB.
Note: In application module, J2=J4= open and J3=J5=0 Ohm
6-1-2. The metal-bezel is set be on ground when the J1 is solder-Bridge.
Note: In application module, J1=0 Ohm
6-1-3.The LED resistor should can be bridged when the J6 is solder-Bridge.
Note: In application module, J6=open
6-1-4.The R7 and the R8 are the LED resistor.
Note: In application module, R7=15 Ohm, R8=open
J3=J5= closed
J2=J4= open
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DEM 16481 SBH-PW-N Product Specification
ãC
7. BACKLIGHT VOLTAGE AND CURRENT
Forward Voltage
Forward Current
Power Dissipation
Reverse Voltage
Reverse Current
Luminous Intensity
Luminous Uniformity
Emitted Color
Emission Wavelength
Spectral Range
SYMBOL
V
f
I
f
P
d
V
R
I
R
I
V
Ec
P
MIN.
70
TYP.
4.0
80
0.32
4.0
1.2
110.0
-White
20
MAX.
4.2
100
UNIT
V
mA
W
V
mA
cd/m
%
K
nm
nm
CONDITIONS
If= mA
80
If= mA
80
2
If= mA
80
=20mA
I
f
Each chip
Ta=25¡
8. DISPLAY DATA RAM (DDRAM)
6
Version: 7.1.1 PAGE:
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DEM 16481 SBH-PW-N Product Specification
7
9. MAXIMUM ABSOLUTE LIMIT
Item Symbol Standard value Unit
Power supply voltage(1) VDD -0.3~+7.0 V
Power supply voltage(2) V
Input voltage VIN -0.3~VDD+0.3 V
Operating temperature T opr -20~+70 °C
Storage temperature Tstg -30~+80 °C
*Voltage greater than above may damage to the Circuit.
VDD>V1>V2>V3>V4>V5
10. ELECTRICAL CHARACTERISTICS
10-1 DC Characteristics
10-1-1 DC Characteristics(VDD=4.5V~5.5V,Ta=-20~+70°C)
V
LCD
-15.0~VDD+0.3 V
DD
Item Symbol
Standard Value
MIN TYP MAX
Operating Voltage V
I
DD
DD1
4.5 5.0 5.5
---- 0.7 1.0
Supply Current
I
DD2
LCD Driving Voltage VLCD
(CONTINUED) (VDD=2.7V~4.5V,Ta=-20~+70°C)
---- 0.4 0.6
3.0
Standard Value
Item Symbol
MIN TYP MAX
Operating Voltage V
I
DD
DD1
2.7 --- 4.5
---- 0.3 0.5
Supply Current
I
DD2
LCD Driving Voltage VLCD
---- 0.17 0.3
3.0
Test
Condition
-------
Unit
V
Ceramic oscillation
fosc=250kHz
Resistor oscillation
mA
external clock operation
fosc=270kHz
4.5 10.0 V
DD-V5(1/5,1/4 Bias) V
Test
Condition
-------
Unit
V
Ceramic oscillation
fosc=250kHz
Resistor oscillation
mA
external clock operation
fosc=270kHz
--- 10.0 VDD-V5(1/5,1/4 Bias) V
Version: 7.1.1 PAGE:
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DEM 16481 SBH-PW-N Product Specification
10-2 AC Characteristics
10-2-1 Write mode (writing data from MPU to module)
Item Symbol Min
E Cycle Time t
E Rise/Fall Time tR,t
E Pulse Width (High, Low) t
R/W and RS Setup Time t
R/W and RS Hold Time t
Data Setup Time t
Data Hold Time t
C
F
w
su1
H1
su2
H2
10-2-2 Read Mode (Reading Data From module to MPU)
Characteristic Symbol Min Type Max Unit Test PIN
E Cycle Time t
C
1200
---
140
0
10
40
10
1200 --- --- ns E
Typ
Max
--25
---
---
---
---
---
Unit
ns -
--
ns
ns
ns
-
ns
--
ns
--
ns
--
Test PIN
E
E
E
R/W,RS,E
R/W,RS,E
DB0~DB7
DB0~DB7
E Rise Time
E Fall Time t
E Pulse width
Address Setup Timet
Address Hold Timet
Data Setup Time
Data Hold Time
t
tp
t
DDR
t
R
F
AS
AH
H
W
--- --- 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
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DEM 16481 SBH-PW-N Product Specification
10-3-1 Write mode
VIH1
RS
VIL1
R/W
E
DB0~DB 7
10-3-2 Read mode
RS
VIH1
V
tAS
tPW
tr
tDSW
Valid Data
tAH
VIL1
tAH
tr
tH
tC
IL1
tAS
tAH
R/W
E
DB0~DB7
tPW
tr
tDDR
Valid Data
tC
tAH
tr
tH
Version: 7.1.1 PAGE:
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DEM 16481 SBH-PW-N Product Specification
11. CONTROL AND DISPLAY COMMAND
Command RS R/W DB7 DB6 DB5 DB4 DB3 DB2DB1 DB0
Clear
Display
Return home 0 0 0 0 0 0 0 0 1 x 1.52ms
0 0 0 0 0 0 0 0 0 1 1.52ms
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.
Entry mode
Set
Display
on/off
control
Cursor
or
Display Shift
function
Set
Set CGRAM
address
Set DDRAM
address
Sets cursor move direction and specifies
0 0 0 0 0 0 0 1 I/D S 37us
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 AC2AC1 AC037us Set CGRAM address in address counter
0 0 1 AC6 AC5 AC4 AC3 AC2AC1 AC037us Set DDRAM address in address counter
display shift. These operations are
performed during data write and read.
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
Read busy
flag&
address
Write data
to RAM
Read data
from RAM
Note:
Be sure the ST7066U is not in the busy state (BF=00 before sending an instruction from the MPU to the ST7066U. If
0 1 BF AC6 AC5 AC4 AC3 AC2AC1 AC00us
1 0 D7 D6 D5 D4 D3 D2 D1 D0 37us
1 1 D7 D6 D5 D4 D3 D2 D1 D0 37us
Whether during internal operation or not
can be known by reading BF. The contents
of address counter can also be read.
Write data into internal RAM
(DDRAM/CGRAM)
Read data from internal RAM (DDRAM /
CGRAM)
an instruction is sent without checking the busy flag, the time between the first instruction and next instruc tion will
take much longer than the instruction time itself. Refer to instruction table for the list of each instruction execution
time.
Please remove the protection 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 comes 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 polarizer
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: 7.1.1 PAGE:
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