DISPLAY Elektronik GmbH LCD MODULE DEM 20488 SYH-PY Product specification Version : 3 27/July/2005
GENERAL SPECIFICATION MODULE NO. : DEM 20488 SYH-PY CUSTOMER P/N VERSION NO.
DEM 20488 SYH-PY Product Specification / CONTENTS 1. FUNCTIONS & FEATURES ----------------------------------------------------------------- 2 2. MECHANICAL SPECIFICATIONS -------------------------------------------------------- 2 3. EXTERNAL DIMENSIONS------------------------------------------------------------------ 3 4. BLOCK DIAGRAM -------------------------------------------------------------------------- 3 5.
DEM 20488 SYH-PY Product Specification 1.FUNCTIONS & FEATURES z LCD Type : MODULE LCD TECHNOLOGY LCD MODE DEM 20488 SYH-PY STN - Yellow/Green Transflective Positive Mode z z z z z z z z Viewing Direction Driving Scheme Power Supply Voltage VLCD (VDD-V0) Op. Temperature Backlight Display contents Internal Memory z z CGROM Interface : 6 o’clock : 1/16 Duty Cycle, 1/5 Bias : 5.0 Volt (typ.) : 4.5 Volt (typ.
DEM 20488 SYH-PY Product Specification 3. EXTERNAL DIMENSIONS 4.
DEM 20488 SYH-PY Product Specification 5. PIN ASSIGNMENT Pin No. 1 2 3 Symbol VSS VDD V0 4 RS 5 6 R/W E 7~10 DB0~DB3 11~14 DB4~DB7 15 16 LED(-) LED(+) Function Ground (0V) Power supply(VDD>VSS) Operating voltage for LCD Select registers. 0: Instruction register (for write) busy flag: address counter (for read); 1: Data register (for write and read) Select read or write.
DEM 20488 SYH-PY Product Specification 6.2 DESCRIPTION: 6-2-1.The polarity of the pin 15 and the pin 16: symbol symbol state J3, J5 J4, J6 J4, J6 Each solder-bridge Each open Each closed J3, J5 Each solder-bridge Each closed Each open Note: In application module: LED Polarity 16 Pin 15 Pin Anode Cathode Cathode Anode J2=J3=J5= closed, J4=J6= open 6-2-2. The metal-bezel is set on ground when the J1 is closed. Note: In application module: J1=closed 6-2-3.
DEM 20488 SYH-PY Product Specification 7. BACKLIGHT 7.1 Absolute Maximum Ratings (Ta=25°C) ITEM Absolute maximum forward current Peak forward current Reverse voltage Power dissipation SYMBOL Ifm Ifp Vr Pd CONDITIONS 1 msec plus 10% duty cycle RATING 50 60 5 120x2 UNIT mA mA V mW 7.2 Electrical-Optical Characteristics ITEM Forward Current Reverse Current Peak Wave length Spectral Line Half Width Luminance Backlight color SYMBOL If Ir λP Δλ Lv MIN. ----569 ----- TYP.
DEM 20488 SYH-PY Product Specification 9. MAXIMUM ABSOLUTE POWER RATINGS (Ta = 25°C) 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 VIN -0.3 ~V DD+0.3 V VLED1 Topr 3.7 ~ 4.1 -20 ~ +70 V °C Tstg -20 ~ +75 °C Input voltage Volt. For BL Operating temperature Storage temperature 10. ELECTRICAL CHARACTERISTICS 10-1. DC Characteristics (VDD = 4.5V ~ 5.
DEM 20488 SYH-PY Product Specification 10-2 AC Characteristics (VDD = 5V, Ta = -20 ~ +70°C) 10-2-1 Write Mode (Writing Data From MPU to module) Characteristic Symbol Min Typ Max Unit Test PIN E Cycle Time tC 1200 --- --- ns E E Rise Time tR --- --- 25 ns E E Fall Time tF --- --- 25 ns E E Pulse width tpW 140 --- --- ns E Address Setup Time tAS 0 --- --- ns R/W,RS,E Address Hold Time tAH 10 --- --- ns R/W,RS,E Data Setup Time TDSW 40 --- --- ns DB0~DB7
DEM 20488 SYH-PY Product Specification 10-2-2 Read Mode (Reading Data from module to MPU) Characteristic Symbol Min Typ Max Unit Test PIN E Cycle Time tC 1200 --- --- ns E E Rise Time tR --- --- 25 ns E E Fall Time tF --- --- 25 ns E E Pulse width tpW 140 --- --- ns E Address Setup Time tAS 0 --- --- ns R/W,RS,E Address Hold Time tAH 10 --- --- ns R/W,RS,E Data Setup Time tDDR --- --- 100 ns DB0~DB7 Data Hold Time tH 10 --- --- ns DB0~DB7 VIH1
DEM 20488 SYH-PY Product Specification 11. CONTROL AND DISPLAY COMMAND DB2 DB1 DB0 Execution time (fosc=270KHz) Remark 0 0 0 1 1.52ms Write”20H” to DDRAM. And set DDRAM address to “00H” from AC 0 0 0 1 x 1.52ms Set DDRAM address to “00H” from AC and return cursor to its original position if shifted. The contents of DDRAM are not changed. 0 0 0 1 I/D S 37us Sets cursor move direction and specifies display shift. These operations are performed during data write and read.
DEM 20488 SYH-PY Product Specification 12.
DEM 20488 SYH-PY Product Specification 13. LCM INITIALIZING BY INSTRUCTION 13.1. 8-bit Interface Mode Power on Wait time > 40ms Condition: fosc=270khz after VCC > 4.
DEM 20488 SYH-PY Product Specification 13-2. 4-bit Interface Mode Power on Condition: fosc=270khz Wait time > 40ms after VCC > 4.
DEM 20488 SYH-PY 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.