DISPLAY Elektronik GmbH
LCD MODULE
DEM 16481 SYH-LY-CYR22
Product Specification Version: 1.1.0
04.09.2008
GENERAL SPECIFICATION
MODULE NO. :
DEM 16481 SYH-LY-CYR22
VERSION NO. CHANGE DESCRIPTION
0 ORIGINAL VERSION 31.03.2004
CHANGED PCB DRAWING
1
AND DESCRIPTION
1.1.0 CHANGE IC 14.01.2008
DATE
30.07.2004
PREPARED BY: OYQ DATE: 14.01.2008
APPROVED BY: MH
DATE: 04.09.2008
DEM 16481 SYH-LY-CYR22 Product Specification
CONTENTS
1. FUNCTIONS & FEATURES............................................................................................................ 2
2. MECHANICAL SPECIFICATIONS ................................................................................................ 2
3. BLOCK DIAGRAM.......................................................................................................................... 3
4. EXTERNAL DIMENSIONS............................................................................................................. 3
5. PIN ASSIGNMENT.......................................................................................................................... 4
6. PCB DRAWING AND DESCRIPTION ........................................................................................... 5
7. BACKLIGHT VOLTAGE & CURRENT ......................................................................................... 6
8. DISPLAY DATA RAM...................................................................................................................... 6
9. MAXIMUM ABSOLUTE POWER RATINGS................................................................................ 7
10. ELECTRICAL CHARACTERISTICS............................................................................................ 8
11. CONTROL AND DISPLAY COMMAND.................................................................................... 10
12. STANDARD CHARACTER PATTERN .......................................................................................11
13. LCD MODULES HANDLING PRECAUTIONS ........................................................................ 12
14. OTHERS........................................................................................................................................ 12
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DEM 16481 SYH-LY-CYR22 Product Specification
1.FUNCTIONS & FEATURES
MODULE LCD TYPE
DEM 16481 SYH-LY-CYR22 STN Yellow Green Transflective Positive 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 Color : Yellow Green
z VLCD Adjustable For Best Contrast : 4.5V (typ.)
z Display contents : 16 x 4 Characters
z Operating Temperature : - 20°C to + 70°C
z Storage Temperature : - 30°C to + 80°C
z Internal Memory : CGROM (8,320 bits )
: CGRAM (64 x 8 bits )
: DDRAM (80 x 8 bits)
z CGROM : CGROM of the ST7066U-0T
z Interface : Easy Interface with a 4-bit or 8-bit MPU
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
z Dot Gap
: 0.05 mm
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DEM 16481 SYH-LY-CYR22 Product Specification
3. BLOCK DIAGRAM
DB0~DB7
E
R/W
RS
V
VDD
VSS
0
LCD
Controller
LSI
ST7066U-
0T
A
K
BACKLIGHT
4. EXTERNAL DIMENSIONS
COM1~COM16
SEG1~SEG40
SEG41~SEG80
Control Signals
LCD PANEL
4 Line x 16 Characters
SEG81~SEG160
SEGMENT
DRIVER
ST7065
SEGMENT
DRIVER
ST7065
5
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DEM 16481 SYH-LY-CYR22 Product Specification
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. PCB drawing and description.
16 LED + (A) Please also refer to 6. 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 4-bits. Upper four bits first
then lower four bits.
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DEM 16481 SYH-LY-CYR22 Product Specification
6. PCB DRAWING AND DESCRIPTION
Note 1: In application module, R1~R5=820Ω , R6=91KΩ
Note 2: The part no. DEM 16481 is printed on the PCB.
DESCRIPTION:
6-1-1.The polarity of the pin 15 and the pin 16 :
symbol
J2,J4 Each solder-bridge Each open Each closed Anode Cathode
J3,J5 Each solder-bridge Each closed Each open Cathode Anode
Note: In application module, J3=J5=closed, J2=J4=J7=open
6-1-2.The metal-bezel is set on ground when the J1 is closed.
Note: In application module, J1=closed
6-1-3.The LED resistor can be bridged when the J6 is closed.
symbol
state
J3,J5 J2,J4
LED Polarity
15 Pin 16 Pin
Note: In application module, J6=open
6-1-4.The R7 and the R8 are the LED resistor.
Note; In application module, R7=R8=15Ω
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DEM 16481 SYH-LY-CYR22 Product Specification
7. BACKLIGHT & SWITCH (Ta=-20~+70°C)
Forward Voltage
8. DISPLAY DATA RAM (DDRAM)
A
K
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DEM 16481 SYH-LY-CYR22 Product Specification
9. MAXIMUM ABSOLUTE LIMIT
Item Symbol Standard value
Power supply voltage(1) VDD -0.3~+7.0
Power supply voltage(2) V
Input voltage
Operating temperature Topr -20~+70
Storage temperature
*Voltage greater than above may damage to the Circuit.
VDD＞V1＞V2＞V3＞V4＞V5
V
LCD
VIN -0.3~VDD+0.3
Tstg
-15.0~VDD+0.3
DD
-30~+80
Unit
V
V
V
°C
°C
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DEM 16481 SYH-LY-CYR22 Product Specification
10. ELECTRICAL CHARACTERISTICS
10-1-1 DC Characteristics (VDD=4.5V~5.5V, Ta=-20~+70°C)
Item Symbol
Operating Voltage V
Supply Current
I
DD1
I
DD2
DD
Standard Value
MIN TYP MAX
4.5 5.0 5.5
---- 0.7 1.0
Ceramic oscillation
Test
Condition
-------
fosc=250kHz
Resistor oscillation
---- 0.4 0.6
external clock operation
fosc=270kHz
LCD Driving Voltage VLCD
3.0
4.5 10.0 VDD-V5(1/5,1/4 Bias) V
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
su1
su2
C
F
w
H1
H2
1200
---
140
0
10
40
10
Typ
Max
---
25
---
---
---
---
---
Unit
--
--
--
--
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 --- --- ns E
ns ns
ns
ns
-
ns
ns
ns
Unit
V
mA
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 Time t
Address Hold Time t
Data Setup Time
t
Data Hold Time
t
R
F
tp
AS
AH
DDR
t
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 SYH-LY-CYR22 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
Val id Data
tC
tAH
tr
tH
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DEM 16481 SYH-LY-CYR22 Product Specification
11. CONTROL AND DISPLAY COMMAND
Command RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Clear
Display
Return home 0 0 0 0 0 0 0 0 1 x 1.52ms
Entry mode
Set
Display
on/off
control
Cursor
or
Display Shift
0 0 0 0 0 0 0 0 0 1 1.52ms
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
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.
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.
function
Set
Set CGRAM
address
Set DDRAM
address
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 0 0 0 1 DL N F x x 37us
0 0 0 1 AC5 AC4 AC3 AC2 AC1 AC0 37us Set CGRAM address in address counter
0 0 1 AC6 AC5 AC4 AC3 AC2 AC1 AC0 37us Set DDRAM address in address counter
0 1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0 0us
1 0 D7 D6 D5 D4 D3 D2 D1 D0 37us
1 1 D7 D6 D5 D4 D3 D2 D1 D0 37us
DL: interface data is 8/4 bits
N: number of line is 2/1
F: font size is 5x11/5x8
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.
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DEM 16481 SYH-LY-CYR22 Product Specification
12. STANDARD CHARACTER PATTERN (ST7066U-0T)
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DEM 16481 SYH-LY-CYR22 Product Specification
13. LCD MODULES HANDLING PRECAUTIONS
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
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