DISPLAY Elektronik GmbH LCD MODULE DEM 20486 SYH-LY Product Specification Version: 1 04/Dec/2007
GENERAL SPECIFICATION MODULE NO. : DEM 20486 SYH-LY CUSTOMER P/N VERSION NO. CHANGE DESCRIPTION DATE 0 ORIGINAL VERSION 11.01.2001 1 CHANGE IC 04.12.2007 PREPARED BY: LSY DATE: 04.12.2007 APPROVED BY: MH DATE: 04.12.
CONTENTS 1. FUNCTIONS & FEATURES------------------------------------------------------------------------------------ 2 2. MECHANICAL SPECIFICATIONS -------------------------------------------------------------------------- 2 3. EXTERNAL DIMENSIONS------------------------------------------------------------------------------------- 3 4. BLOCK DIAGRAM ---------------------------------------------------------------------------------------------- 3 5.
DEM 20486 SYH-LY Product Specification 1. FUNCTIONS & FEATURES MODULE NAME LCD TYPE DEM 20486 SYH-LY STN Yellow Green Transflective Positive Mode z z z z z z z Viewing Direction Driving Scheme Power Supply Voltage Backlight Color VLCD Adjustable For Best Contrast Display contents Internal Memory z z z z CGROM Interface Operating Temperature Storage Temperature : 6 o’clock : 1/16 Duty Cycle, 1/5 Bias : 5 Volt (typ.) : LED, Lightbox, Yellow Green : 4.5 Volt (typ.
DEM 20486 SYH-LY Product Specification 3. EXTERNAL DIMENSIONS ( unit: mm) 4.
DEM 20486 SYH-LY Product Specification 5. PIN ASSIGNMENT Function Pin No.
DEM 20486 SYH-LY Product Specification Description : 6-1-1.The polarity of the pin 15 and the pin 16 J3,J5 J2, J4 LED Polarity 15 Pin 16 Pin Each open Each closed Anode Cathode Each closed Each open Cathode Anode Note: on application module, J3=J5= 0 Ohm, J2=J4= open 6-1-2. The metal-bezel is set on ground when the J1 = 0 Ohm. Note: on application module, J1= 0 Ohm 6-1-3.The LED resistor should can be bridged when the J6 is open. Note: on application module, J6=open 6-1-4.
DEM 20486 SYH-LY Product Specification 7. BACKLIGHT ELECTRICAL/OPTICAL SPECIFICATIONS 7.1 Absolute Maximum Ratings (Ta=25°C) Item Symbol Conditions Absolute maximum forward current Ifm Peak forward current Ifp 1 msec plus 10% guty cycle Reverse Voltage Vr Power dissipation Pd 7.2 Electrical-optical characteristics(Ta=25°C) Item Symbol Min. Typ. Max. Unit Forward voltage Vf 3.8 4.0 4.3 V Reverse current Ir 100 uA Dominant wave length 569 572 575 nm λ D Spectral line half width Luminance 7.
DEM 20486 SYH-LY Product Specification 9. MAXIMUM ABSOLUTE POWER LIMIT Item Symbol Standard value Unit Power supply voltage VDD -0.3~+7.0 V LCD Driver voltage VLCD VDD-10.0~VDD+0.3 V Input voltage VIN -0.3~VDD+0.3 V Operating temperature Topr -20~+70 ℃ Storage temperature Tstg -30~+80 ℃ 10. ELECTRICAL CHARACTERISTICS 10-1-1 DC Characteristics (VDD=5.0V, Ta=-20~+70°C) Item Operating Voltage Supply Current LCD Driving Voltage Symbol VDD IDD VLCD MIN 4.5 ---3.
DEM 20486 SYH-LY Product Specification 10-2-2 Read mode (reading data from module Series to MPU ) Characteristic Enable Cycle Time Enable Pulse Time Symbol tC TPW Min 1200 480 Type ----- Max ----- Unit ns ns Test PIN E E Enable Rise/Fall Time TR，TF TAS TAH TDDR TH --- --- 25 ns E 0 10 --10 --------- ----320 --- ns ns ns ns R/W,RS,E R/W,RS,E DB0~DB7 DB0~DB7 Address Set-up Time Address Hold Time Data Set-up Time Data Hold Time Version: 1 PAGE: 8
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) clear Display L L L L L L L L L H 1.52ms Return home L L L L L L L L H --- 1.52ms 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.
DEM 20486 SYH-LY Product Specification 12. LCM INITIALIZING BY INSTRUCTION 12-1 8-bit interface mode Power on Wait time > 40ms After VDD> 4.
DEM 20486 SYH-LY 12-2 Product Specification 4-bit interface mode Power on Condition: fosc=270khz Wait time > 40ms After VDD> 4.
DEM 20486 SYH-LY Product Specification 13.
DEM 20486 SYH-LY Product Specification 14. 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 come into contact with your skin or clothes promptly wash it off using soap and water.
