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DISPLAY Elektronik GmbH DISPLAY Elektronik GmbH
LCD MODULE
DEM 20486 SYH-LY
Product specification
VERSION: 0
09.04.2003
GENERAL SPECIFICATION
COB MODULE N0. :
DEM 20486 SYH-LY
VERSION NO. 0
CHANGE DESCRIPTION
ORIGINAL VERSION
DATE
20001/01/11
PREPARED BY: ZJK
DATE:
11.01.2001
APPROVED BY: MH
DATE:
09.04.2003
DEM 20486 SYH-LY
Product specification
CONTENTS
2
1. FUNCTIONS & FEATURES ---------------------------------------------------------------
2 2. MECHANICAL SPECIFICATIONS ---------------------------------------------------------------------------------------3. BLOCK DIAGRAM -----------------------------------------------------------------------4. EXTERNAL DIMENSIONS ----------------------------------------------------------------5. PIN ASSIGNMENT ------------------------------------------------------------------------2 3 3
4 6.1 PCB DRAWING AND DESCRIPTION------------------------------------------------------------------------5 6.2 EXAMPLE APPLICATION------------------------------------------------------------------------5 6.3 THE SILK TEXTS ARE ON THE PCB .------------------------------------------------------------------------7. BACKLIGHT & SWITCH --------------------------------------------------------------------------6 6 8. DISPLAY DATA RAM (DDRAM)-------------------------------------------------------------------7 9. MAXIMUM ABSOLUTE POWER RATINGS---------------------------------------------------------10. ELECTRICAL CHARACTERISTICS -------------------------------------------------------- 7 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 --------------------------------------------------13.LCM INITIALIZING BY INSTRUCTION----------------------------------------------13-1 8 bit INTERFACE MODE-----------------------------------------------------------------13-2 4 bit INTERFACE MODE------------------------------------------------------------------
11 12 12 13
14. LCD MODULES HANDLING PRECAUTIONS----------------------------------------------- 14 15 15. OTHERS ---------------------------------------------------------------------------------------------------
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1
DEM 20486 SYH-LY
Product specification
1. FUNCTIONS & FEATURES
MODULE DEM 20486 SYH-LY Viewing Direction Driving Scheme Power Supply Voltage Backlight color VLCD Adjustable for Best Contrast Display Format Internal Memory LCD MODEL STN Yellow/Green : 6 O'clock : 1/16 Duty Cycle, 1/5 Bias : 2.7V to 5.5V (typ. 5V) :Yellow Green (lightbox) : 4.5V (typ.) : 20 x 4 Characters ( 5 x 8 dots, Format : 208 Kinds ) : CGROM ( 10,080 bits) : CGRAM ( 64 x 8 bits ) : DDRAM ( 80 x 8 bits for Digits ) Interface : Easy Interface with a 4 - bit or 8 - bit MPU LCD TYPE Transflective Positive Mode
2. MECHANICAL SPECIFICATIONS
Character Pitch Character Size Character Font Dot Size Dot Gap : 4.10(w) x 7.0(h) mm : 3.45(w) x 6.35(h) mm : 5 x 8 dots : 0.65(w) x 0.75(h) mm : 0.05 mm
3. BLOCK Diagram
LCD PANEL 4line*20characters
SEG121~SEG 200 SEG41~SEG120
DB0~DB7 E R/W RS V0 VDD VSS
COM1~COM16
LCD
Controller
LSI KS0066
SEG1~SEG40
SEGMENT DRIVER KS0063 Control signals
SEGMENT DRIVER KS0063
A K
BACKLIGHT
Figure 1.0
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2
DEM 20486 SYH-LY
Product specification
4. External Dimensions
Figure 2.0
5. PIN Assignment
Pin No. 1 2 3 4 Symbol VSS VDD V0 RS 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 .
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 )
Please also refer to 6.1 PCB drawing and description . Please also refer to 6.1 PCB drawing and description .
VERSION : 0
3
DEM 20486 SYH-LY
Product specification
6.1 PCB DRAWING AND DESCRIPTION
J1 R1 R2 R3 R4 R5 R6 R8 R7 J6 J2 J4 J5 J3 + -
1
16
Figure 3.0
Description :
6-1-1.The polarity of the pin 15 and the pin 16 Symbol
Symbol
J3,J5
J2,J4
LED Polarity 15 Pin Anode 16 Pin Cathode Anode
State Each Solder- Bridge Each Open Each Solder- Bridge
J2,J4 J3,J5
Each Open Cathode
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).
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DEM 20486 SYH-LY
6.2 Example application 6-2-1 The LED resistor should be bridged as following . R8 R7
Product specification
J6 6-2-2 The 15 pin is the Anode and the 16 pin is the cathode as following . J4 J5 6-2-3 The 15 pin is the cathode and the 16 pin is the Anode as following . J3 J4 J5 6-2-4 The metal-bezel is on ground as following . J1 6.3 The module No. is printed on the PCB . J2 J2 J3
1
DEM20486
16
Figure 4.0
VERSION : 0
5
DEM 20486 SYH-LY
Product specification
7. BACKLIGHT & SWITCH (Ta = -20 ~ +70C)
Item Backlight Voltage Backlight Current Symbol V I Standard Value 5.0 ~200 Unit V mA Applicable Terminal LED+ / LED-
A
28 x 2 dices
A
K
Figure 5.0
K
8. DISPLAY DATA RAM ( DDRAM )
DISPLAY POSITION 1 FIRST LINE SECOND LINE THIRD LINE FOURTH LINE 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 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 20486 SYH-LY
Product specification
9. MAXIMUM ABSOLUTE POWER RATINGS (Ta = 25C)
Item Power supply voltage(1) Power supply voltage(2) Input voltage Volt. For BL Operating temperature Storage temperature Symbol VDD V0 VIN VLED1 Topr Tstg Standard value -0.3 ~ +7.0 VDD-15.0 ~ VDD+0.3 -0.3 ~ VDD+0.3 4 ~ 4.5 -20 ~ +70 -30 ~ +80 Unit V V V V C C
10. Electrical Characteristics 10-1. DC Characteristics (VDD = 4.5V ~ 5.5V, Ta = -20 ~ +70C)
Item
Operating Voltage Symbol
VDD IDD VIL1 VIH1 VIL2 VIH2 VOL1 VOH1 VOL2 VOH2 VdCOM VdSEG IIKG IIL fOSC1 fOSC duty tR,tF VLCD
Standard Value MIN TYP MAX 4,5 5 5,5 0,35 -0,3 2,2 -0,2 VDD-1.0 2,4 0.1VDD 0.9VDD 1 1 -1 -50 190 125 45 3.0 -125 270 270 50 1 -250 350 410 55 0,2 13.0 0,6 0,6 VDD 1.0 VDD 0,4
Test Condition VDD=5V,fosc=270kHz
Unit V mA V V
Supply Current Input Voltage(1) (except OSC1) Input Voltage(2) ( OSC1)
Output Voltage (1)
IOL=1.2mA IOH=-0.205mA IOL=40uA IOH=-40uA
V V V uA uA kHz kHz % us V
(DB0 TO DB7)
Output Voltage (2)
(except DB0 TO DB7) Voltage Drop Input Leakage Current Input Low Current Internal Clock (external Rf) External Clock LCD Driving Voltage
IO=0.1mA VIN=0 V to VDD
VIN=0V,VDD=5V(pull up)
Rf = 91k 2% (VDD=5V)
VDD-V5(1/5,1/4 Bias)
VERSION : 0
7
DEM 20486 SYH-LY
Product specification
10-2 AC Characteristics (VDD = 4.5V ~ 5.5V, Ta = -20 ~ +70C)
10-2-1. Write mode (writing data from MPU to DEM 20486 SYH-LY) Characteristic E Cycle Time E Rise Time E Fall Time E Pulse width (High,Low) R/W and RS Set-up Time R/W and RS Hold Time Data Set-up Time Data Hold Time Symbol tC tR tF tW tSU1 tH1 tSU2 tH2 230 40 10 80 10 Min 500 Typ Max 20 20 Unit ns ns ns ns ns ns ns ns Test PIN E E E E R/W,RS R/W,RS DB0~DB7 DB0~DB7
Figure 6.0
VERSION : 0
8
DEM 20486 SYH-LY
10-2-2.Read mode (Reading data from DEM 20486 SYH-LY to MPU) Characteristic E Cycle Time E Rise Time E Fall Time E Pulse width (High , Low) R/W and RS Set-up Time R/W and RS Hold Time Data output Delay Time Data Hold Time Symbol tC tR tF tW tSU tH tD tDH 5 230 40 10 120 Min 500 Typ Max 20 20
Product specification
Unit ns ns ns ns ns ns ns ns
Test PIN E E E E R/W,RS R/W,RS DB0~DB7 DB0~DB7
Figure7.0
VERSION : 0
9
DEM 20486 SYH-LY
Product specification
11. CONTROL AND DISPLAY COMMAND
Command
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Execution time
(fosc=270KHz)
Remark
clear Display Return home Entry mode set
L L L
L L L
L L L
L L L
L L L
L L L
L L L
L L H
L H
H X
1.53ms 1.53ms 39us Cursor move to first digit 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 D Cursor C Blinking B H L H L H L H L H L H L Blinking on Blinking off Display shift Cursor move Right shift Left shift 8bits interface 4bits interface 2 line display 1 line display Display on Display off H L Cursor on Cursor off H L Display on Display off
I/D SH
Display on/off control
L
L
L
L
L
L
H
D
C
B
39us
Cursor or
Display Shift
L
L
L
L
L
H
S/C R/L
X
X
39us
SC R/L
function Set
L
L
L
L
H
DL
N
F
X
X
39us
DL N F
Set CGRAM address Set DDRAM address Read busy flag& address
L L L
L L H
L
H AC5 AC4 AC3 AC2 AC1 AC0
39us 39us 0us
H AC6 AC5 AC4 AC3 AC2 AC1 AC0 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0
CGRAM data is sent and received after this setting DDRAM data is sent and received after this setting 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 BF
Write data to RAM Read data from RAM *X:Don't care
H H
L
D7 D6 D5 D4 D3 D2 D1 D0
43us 43us
H D7 D6 D5 D4 D3 D2 D1 D0
10 VERSION : 0
DEM 20486 SYH-LY
Product specification
12 10. STANDARD CHARACTER PATTERN
Upper(4bit) Lowerr(4bit)
LLLL
CG RAM
LLLH
LLHL
LLHH
LHLL
LHLH
LHHL
LHHH
HLLL
HLLH
HLHL
HLHH
HHLL
HHLH
HHHL
HHHH
LLLL
(1)
LLLH
(2)
LLHL
(3)
LLHH
(4)
LHLL
(5)
LHLH
(6)
LHHL
(7)
LHHH
(8)
HLLL
(1)
HLLH
(2)
HLHL
(3)
HLHH
(4)
HHLL
(5)
HHLH
(6)
HHHL
(7)
HHHH
(8)
VERSION: 0
11
DEM 20486 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 N RS 0 RW 0 Function set DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 1 1 N F X X 0 1 0 1 1-line mode 2-line mode display off display on
F
Wait for more than 39us D RS 0 RW 0 Display on/off control DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 1 D C B 0 1 0 1 0 1 display off display on cursor off cursor on blink off blink on
C
Wait for more than 39us
B
RS 0
RW 0
Display clear DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 0 0 0 1
Wait for more than 1.53ms I/D Entry mode set DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 0 1 I/D SH 0 1 decrement mode increment mode
RS 0
RW 0
SH
0 1
entire shift off entire shift on
Initialization end
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DEM 20486 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 N 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 0 1 0 1 1-line mode 2-line mode display off display on
F
Wait for more than 39us
D
0 1 0 1 0 1
display off display on cursor off cursor on blink off blink on
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
C
B
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
I/D
0 1
decrement mode increment mode
Wait for more than 1.53ms SH 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 0 1 entire shift off entire shift on
RS 0 0
RW 0 0
Initialization end
VERSION : 0
13
DEM 20486 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 0C). Whenever possible, the LCD Modules should be stored in the same conditions in which they were shipped from our company.
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DEM 20486 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
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