http://www.gaw.ru/pdf/lcd/lcm/Display/char/DEM20485SYH-LY.PDF

Display Elektronik GmbH
LCD MODULE
DEM 20485 SYH-LY
Product specification
VERSION: 0
14.04.2003
GENERAL SPECIFICATION
COB MODULE N0. :
DEM 20485 SYH-LY
CUSTOMER P / N :
VERSION NO.
CHANGE DESCRIPTION
DATE
0
ORIGINAL VERSION
20001/01/11
PREPARED BY: ZDK
DATE:
11.01.2001
APPROVED BY: MH
DATE:
14.04.2003
DEM 20485 SYH-LY
Product specification
CONTENTS
1. FUNCTIONS & FEATURES --------------------------------------------------------------- 2
2
2. MECHANICAL SPECIFICATIONS ---------------------------------------------------------------------------3. BLOCK DIAGRAM ------------------------------------------------------------------------
2
4. EXTERNAL DIMENSIONS ----------------------------------------------------------------- 3
5. PIN ASSIGNMENT -------------------------------------------------------------------------
3
4
6.1 PCB DRAWING AND DESCRIPTION-----------------------------------------------------------------------5
6.2 EXAMPLE APPLICATION-------------------------------------------------------------------------
5
6.3 THE SILK TEXTS ARE ON THE PCB .---------------------------------------------------------------------6
7. BACKLIGHT & SWITCH -------------------------------------------------------------------------6
8. DISPLAY DATA RAM (DRAM)-------------------------------------------------------------------7
9. MAXIMUM ABSOLUTE POWER RATINGS---------------------------------------------------------7
10. ELECTRICAL CHARACTERISTICS --------------------------------------------------------
7
10 -1 DC CHARACTERISTICS----------------------------------------------------------------------------------------
8
10-2 AC CHARACTERISTICS-----------------------------------------------------------------------------------------
8
10-2-1 WRITE MODE-------------------------------------------------------------------------------------------------
9
10-2-2 READ MODE--------------------------------------------------------------------------------------------------10
11.CONTROL AND DISPLAY COMMAND-----------------------------------------------------------------12.STANDARD CHARACTER PATTERN --------------------------------------------------- 11
13.LCM INITIALIZING BY INSTRUCTION-----------------------------------------------
12
13-1 8 bit INTERFACE MODE------------------------------------------------------------------
12
13-2 4 bit INTERFACE MODE------------------------------------------------------------------
13
14
14. LCD MODULES HANDLING PRECAUTIONS----------------------------------------------15
15. OTHERS ---------------------------------------------------------------------------------------------------
VERSION : 0
1
DEM 20485 SYH-LY
Product specification
1. FUNCTIONS & FEATURES
DEM 20485-Series LCD type:
MODULE
DEM 20485 SYH-LY
Viewing Direction
LCD MODEL
LCD TYPE
STN Yellow/Green
: 6 O'clock
Transflective Positive Mode
Driving Scheme
: 1/16 Duty Cycle, 1/5 Bias
Power Supply Voltage
: 2.7V to 5.5V (typ. 5V)
Backlight color
VLCD Adjustable for Best Contrast
: Yellow Green (lightbox)
Display Format
: 20 x 4 Characters ( 5 x 8 dots, Format : 208 Kinds )
Internal Memory
: CGROM ( 10,080 bits)
: 4.5V (typ.)
: CGRAM ( 64 x 8 bits )
: DDRAM ( 80 x 8 bits for Digits )
Interface
: Easy Interface with a 4 - bit or 8 - bit MPU
2. MECHANICAL SPECIFICATIONS
Character Pitch
: 3.55(w) x 5.35(h) mm
Character Size
: 2.95(w) x 4.75(h) mm
Character Font
: 5 x 8 dots
Dot Size
: 0.55(w) x 0.55(h) mm
Dot Gap
: 0.05 mm
3. BLOCK Diagram
LCD
Controller
LSI
KS0066
SEG1~SEG40
SEGMENT
DRIVER
KS0063
SEG121~SEG200
V0
VDD
VSS
COM1~COM16
SEG41~SEG120
DB0~DB7
E
R/W
RS
LCD PANEL
4line x 20characters
SEGMENT
DRIVER
KS0063
Control signals
A
K
BACKLIGHT
Figure 1.0
VERSION : 0
2
DEM 20485 SYH-LY
Product specification
4. External Dimensions
Figure 2.0
5. PIN Assignment
Pin No.
1
2
3
4
Symbol
VSS
VDD
V0
RS
5
R/W
6
7
8
9
10
11
12
13
14
15
16
E
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
LED - ( K )
LED + ( A )
VERSION : 0
Function
Ground terminal of module
Supply terminal of module +5 V
Power Supply for Liquid crystal Drive
Register Select
RS = 0 (Instruction Register)
RS = 1 (Data Register)
Read / Write
R/W = 1 (Read)
R/W = 0 (Write)
Enable
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 .
Please also refer to 6.1 PCB drawing and description .
Please also refer to 6.1 PCB drawing and description .
3
DEM 20485 SYH-LY
Product specification
6.1 PCB DRAWING AND DESCRIPTION
J1
R1
R2
J4
R8
R7
J6
R3
R4
R5
J5
J3
J2
R6
1
-
+
16
Figure 3.0
Description :
6-1-1.The polarity of the pin 15 and the pin 16
Symbol
Symbol
J3,J5
State
J2,J4
Each Solder- Bridge Each Open
J3,J5
Each Solder- Bridge
J2,J4
LED Polarity
15 Pin
16 Pin
Anode
Cathode
Each Open Cathode
Anode
6-1-2. The metal-bezel should be on gronud when the J1 is Solder- Bridge .
6-1-3. The LED Resistor should be bridged when the J6 is Solder-Bridge .
6-1-4. The R7 and R8 are the LED Resistor. (R7=R8=10 Ohm).
VERSION : 0
4
DEM 20485 SYH-LY
Product specification
6.2 Example application
6-2-1 The LED resistor should be bridged as following .
R8
R7
J6
6-2-2 The 15 pin is the Anode and the 16 pin is the cathode as following .
J4
J3
J2
J5
6-2-3 The 15 pin is the cathode and the 16 pin is the Anode as following .
J3
J4
J2
J5
6-2-4 The metal-bezel is on ground as following .
J1
6.3 The module No. is printed on the PCB .
1
16
Figure 4.0
VERSION : 0
5
DEM 20485 SYH-LY
Product specification
7. BACKLIGHT & SWITCH (Ta = -20 ~ +70°C)
Item
Symbol
Standard Value
Unit
Backlight Voltage
V
5
V
Backlight Current
I
~ 200
mA
Applicable Terminal
LED+ / LED-
28 x 2
dices
A
K
Figure 5.0
8. DISPLAY DATA RAM ( DDRAM )
DISPLAY POSITION
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20
FIRST LINE
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13
SECOND LINE
40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53
THIRD LINE
14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27
FOURTH LINE
54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 63 64 65 66 67
DD RAM ADDRESS
VERSION : 0
6
DEM 20485 SYH-LY
Product specification
9. MAXIMUM ABSOLUTE POWER RATINGS (Ta = 25°C)
Item
Power supply voltage(1)
Power supply voltage(2)
Symbol
VDD
V0
Standard value
-0.3 ~ +7.0
VDD-15.0 ~ VDD+0.3
Unit
V
V
VIN
-0.3 ~ VDD+0.3
V
VLED1
Topr
Tstg
4 ~ 4.5
-20 ~ +70
-30 ~ +80
V
°C
°C
Input voltage
Volt. For BL
Operating temperature
Storage temperature
10. Electrical Characteristics
10-1. DC Characteristics (VDD = 4.5V ~ 5.5V, Ta = -20 ~ +70°C)
Operating Voltage
VDD
Standard Value
MIN
TYP
MAX
4,5
5
5,5
Supply Current
IDD
0,35
Input Voltage(1)
VIL1
-0,3
0,6
(except OSC1)
VIH1
2,2
VDD
Input Voltage(2)
VIL2
( OSC1)
VIH2
-0,2
VDD-1.0
1.0
VDD
Output Voltage (1)
VOL1
(DB0 TO DB7)
VOH1
Output Voltage (2)
VOL2
Item
(except DB0 TO DB7)
Voltage Drop
Symbol
VOH2
0,6
0,4
2,4
Test
Condition
VDD=5V,fosc=270kHz
V
V
IOL=1.2mA
0.1VDD
0.9VDD
IOL=40uA
VdSEG
1
IO=0.1±mA
V
1
VIN=0 V to VDD
uA
uA
IIKG
-1
Input Low Current
IIL
-50
-125
-250
VIN=0V,VDD=5V(pull up)
fOSC1
190
270
350
Rf = 91k ± 2%
(VDD=5V)
fOSC
125
45
270
50
410
55
0,2
LCD Driving Voltage
VLCD
VERSION : 0
3.0
V
IOH=-40uA
1
duty
tR,tF
V
IOH=-0.205mA
VdCOM
External Clock
mA
V
Input Leakage Current
Internal Clock
(external Rf)
Unit
13.0
kHz
kHz
%
us
VDD-V5(1/5,1/4 Bias)
V
7
DEM 20485 SYH-LY
Product specification
10-2 AC Characteristics (VDD = 4.5V ~ 5.5V, Ta = -20 ~ +70°C)
10-2-1. Write mode (writing data from MPU to DEM 20485-Series)
Characteristic
E Cycle Time
Symbol
tC
Min
500
Typ
Max
Unit
ns
Test PIN
E
E Rise Time
tR
20
ns
E
E Fall Time
tF
20
ns
E
E Pulse width (High,Low)
tW
230
ns
E
R/W and RS Set-up Time
tSU1
40
ns
R/W,RS
R/W and RS Hold Time
tH1
10
ns
R/W,RS
Data Set-up Time
tSU2
80
ns
DB0~DB7
Data Hold Time
tH2
10
ns
DB0~DB7
Figure 6.0
VERSION : 0
8
DEM 20485 SYH-LY
Product specification
10-2-2.Read mode (Reading data from DEM 20485-Series to MPU)
Characteristic
E Cycle Time
Symbol
tC
Min
500
Typ
Max
Unit
ns
Test PIN
E
E Rise Time
tR
20
ns
E
E Fall Time
tF
20
ns
E
E Pulse width (High , Low)
tW
230
ns
E
R/W and RS Set-up Time
tSU
40
ns
R/W,RS
R/W and RS Hold Time
tH
10
ns
R/W,RS
Data output Delay Time
tD
ns
DB0~DB7
ns
DB0~DB7
Data Hold Time
tDH
120
5
Figure7.0
VERSION : 0
9
DEM 20485 SYH-LY
Product specification
11. CONTROL AND DISPLAY COMMAND
Command
Remark
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Execution time
(fosc=270KHz)
clear
Display
Return
home
Entry mode
set
L
L
L
L
L
L
L
L
L
H
1.53ms
L
L
L
L
L
L
L
L
H
X
1.53ms
L
L
L
L
L
L
L
H
I/D SH
39us
I/D:set cursor move direction
I/D
H
Increase
l
Decrease
SH:Specifies shift of display
SH
H
Display is shifted
L
Display is not shifted
Display
on/off
control
L
L
L
L
L
L
H
D
C
39us
Display
B
Cursor move to first digit
D
H
L
Display on
Display off
C
H
L
Cursor on
Cursor off
B
H
L
Blinking on
Blinking off
SC
H
L
H
L
Display shift
Cursor move
Right shift
Left shift
H
L
H
L
H
L
8bits interface
4bits interface
2 line display
1 line display
Display on
Display off
Cursor
Blinking
Cursor
or
L
L
L
L
L
H S/C R/L
X
X
39us
R/L
Display Shift
function
Set
L
L
L
L
H
DL
N
F
X
X
39us
DL
N
F
Set CGRAM L
address
Set DDRAM L
address
Read busy L
flag&
address
Write data
to RAM
Read data
from RAM
L
L
H AC5 AC4 AC3 AC2 AC1 AC0
39us
L
H AC6 AC5 AC4 AC3 AC2 AC1 AC0
39us
H
BF AC6 AC5 AC4 AC3 AC2 AC1 AC0
0us
CGRAM data is sent and
received after this setting
DDRAM data is sent and
received after this setting
BF
H
L D7 D6 D5 D4 D3 D2 D1 D0
43us
H
H D7 D6 D5 D4 D3 D2 D1 D0
43us
H
Busy
L
Ready
-Reads BF indication
internal operating is being
performed
-Reads address counter
contents
Write data into DDRAM or
CGRAM
Read data from DDRAM or
CGRAM
*X:Don't care
10
VERSION : 0
DEM 20485 SYH-LY
Product specification
12.
10. STANDARD CHARACTER PATTERN
Upper(4bit)
LLLL
Lowerr(4bit)
LLLH
LLHL
LLHH
LHLL
LHLH
LHHL
LHHH
HLLL
HLLH
HLHL
HLHH
HHLL
HHLH
HHHL
HHHH
CG RAM
LLLL
(1)
LLLH
(2)
LLHL
(3)
LLHH
(4)
LHLL
(5)
LHLH
(6)
LHHL
(7)
LHHH
(8)
HLLL
(1)
HLLH
(2)
HLHL
(3)
HLHH
HHLL
HHLH
(4)
(5)
(6)
HHHL
(7)
HHHH
(8)
VERSION: 0
11
DEM 20485 SYH-LY
Product specification
13. LCM INITIALIZING BY INSTRUCTION
13-1 8-bit interface mode
Power on
Condition : fosc=270khz
Wait for more than 30ms
after VDD rises to 4.5v
RS
0
Function set
RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
1
1
N
F
X
X
N
0
1
1-line mode
2-line mode
F
0
1
display off
display on
D
0
1
display off
display on
C
0
1
cursor off
cursor on
B
0
1
blink off
blink on
I/D
0
1
decrement mode
increment mode
SH
0
1
entire shift off
entire shift on
Wait for more than 39us
RS
0
Display on/off control
RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
0
1
D
C
B
Wait for more than 39us
RS
0
Display clear
RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
0
0
0
0
1
Wait for more than 1.53ms
RS
0
Entry mode set
RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
0
0
1
I/D SH
Initialization end
VERSION : 0
12
DEM 20485 SYH-LY
Product specification
13 -2 4-bit interface mode
Power on
Condition : fosc=270khz
Wait for more than 30ms
after VDD rises to 4.5v
RS
0
0
0
RW
0
0
0
Function set
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
1
0
X
X
X
X
0
0
1
0
X
X
X
X
N
F
X
X
X
F
X
X
Wait for more than 39us
RS
0
0
RW
0
0
Display on/off control
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
X
X
X
X
1
D
C
B
X
X
X
X
N
0
1
1-line mode
2-line mode
F
0
1
display off
display on
D
0
1
display off
display on
C
0
1
cursor off
cursor on
B
0
1
blink off
blink on
I/D
0
1
decrement mode
increment mode
SH
0
1
entire shift off
entire shift on
Wait for more than 39us
RS
0
0
RW
0
0
Display clear
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
X
X
X
X
0
0
0
1
X
X
X
X
Wait for more than 1.53ms
RS
0
0
RW
0
0
Entry mode set
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
X
X
X
X
0
1
I/D SH
X
X
X
X
Initialization end
VERSION : 0
13
DEM 20485 SYH-LY
Product specification
14. LCD Modules Handling precautions
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 Modules.
-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.
VERSION : 0
14
DEM 20485 SYH-LY
Product specification
15. 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 the 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 : 0
15