Data International Co., Ltd. DATAVISION APPROVAL SHEET Customer : Part Name : LCD MODULE Model No. : DV-20400-S1FBLY/R22 Drawing No. : Approved by : : Date Approved Checked Prepared Sheet Code: Ming-Chun Chen 3065010220 5F, No. 25, Lane, 169, Kang-Ning Street.,His Chin Chen, Taipei Hsien, Taiwan (R.O.C.) T e l : 886-2-26950959 Fax: 886-2-26958620 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 CONTENTS 1. SCOPE ------------------------------------------ 3 2. PRODUCT SPECIFICATIONS ------------------------------------------ 3 2.1 General ------------------------------------------ 3 2.2 Mechanical Characteristics ------------------------------------------ 4 2.3 Absolute Maximum Ratings ------------------------------------------ 5 2.4 Electrical Characteristics ------------------------------------------ 5 2.5 Absolute maximum ratings ------------------------------------------ 6 2.6 Optical Characteristics ------------------------------------------ 6 2.7 LED Back-light Characteristics ------------------------------------------ 9 3. RELIABILITY ------------------------------------------ 10 4. OPERATING INSTRUCTIONS ------------------------------------------ 11 4.1 Input signal Function ------------------------------------------ 11 4.2 Voltage Generator Circuit ------------------------------------------ 12 4.3 Circuit Block Diagram ------------------------------------------ 13 4.4 Timing Characteristics ------------------------------------------ 14 4.5 Instruction Description ------------------------------------------ 15 4.6 Instruction table ------------------------------------------ 19 4.7 Font table ------------------------------------------ 20 5. NOTES ------------------------------------------ 21 6. OPERATION PRECAUTIONS ------------------------------------------ 21 7. LCM DIMENSIONS ------------------------------------------ 22 DATA VISION 03/09/19 2 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 1. SCOPE The DV-20400-S1FBLY/R22, dot-matrix LCD unit of a 5 x 7- dot 20-character 4-line dot-matrix LCD panel, LCD driver, controller LSI and yellow green back-light LED fabricated on a single PCB. Incorporating mask ROM-based character generator and display data RAM in the controller LSI, the unit can efficiently display the desired characters under microprocessor control. 2. PRODUCT SPECIFICATIONS 2.1 General l The LCD of the unit is STN (Super Twisted Nematic) yellow-green Transflective , Normal temperature type. l Low power consumption with the dot-matrix LCD panel and CMOS LSI. Built-in back-light LED with high luminance and stable radiation. l Thin, lightweight design permits easy installation in a variety of equipment. l Allowing for being connected at general-purpose CMOS signal level, the unit can be easily interfaced to a microprocessor with common 4-bit and 8-bit parallel inputs and outputs. l Multiplexing driving : 1/16duty, 1/4bias, 6 o’clock l Built-in character generator ROM and RAM, and display data RAM: Character generator ROM 225 different 5 x 7 dot-matrix character patterns (Alphanumeric and symbols) Character generator RAM 8 different user programmed 5 x 7 dot-matrix patterns Display data RAM 80 x 8 bits l Numerous instructions Display clear, Cursor home, Display ON/OFF, Cursor ON/OFF, Blink character, Cursor shift, Display shift DATA VISION 03/09/19 3 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 2.2 Mechanical Characteristics Item Characteristic Number of Characters 20 × 4 Dot dimensions(mm) 0.55 × 0.55 Dot spacing (mm) 0.05 Module dimensions (Horizontal × Vertical × Thickness, mm) 98.0 × 60.0 × 14.5 max. Viewing area (Horizontal × Vertical, mm) 76.0 × 25.2 Active area (Horizontal × Vertical, mm) 70.4 × 20.8 DATA VISION 03/09/19 4 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 2.3 Absolute Maximum Ratings (Without LED back-light) 2.4 Electrical Characteristics (Without LED back-light) DATA VISION 03/09/19 5 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 2.5 Optical Characteristics Absolute maximum ratings Item Symbol Rating Unit Remarks Storage temperature range Tst -20~70 °C No condensation Operating temperature range Top 0~50 °C No condensation 2.6 Optical Characteristics 1/16 duty, 1/4 bias Item Driving voltage Symbol Vop Temp. Min. Typ. Max. 0 oC 4.50 4.80 5.10 20 o C 4.35 4.65 4.95 50 o C 4.20 4.50 4.80 Unit V Contrast K 20 o C 1.34 4.99 5.17 -- Frame freq. f -- 32 64 128 Hz Response ton -- 32 250 time toff -- 117 250 DATA VISION 20 o C 03/09/19 ms 6 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 2.6.1 Definition of optical characteristics * Definition of angles φ and θ Light (When reflected) Z (θ = 0 ο) θ2 Sensor θ θ1 i Y' (φ= 180 ο ) X (φ = 90 ο) φ X' Y ( φ= 0 ο ) (θ=90 ο) LC panel Z Light (When transmitted) *Definition of contrast C B1 Brightness of selected portion C= = B 2 Brightness of unselected portion (%) Dark unselected portion brightness curve (bias voltage applied) Brightness selected portion brightness curve Bright Operation voltage Vopr DATA VISION 03/09/19 (V) 7 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 * Definition of viewing angles θ1 and θ2 Contrast C Cmax. 2.0 θ1 θ2 Viewing angle (φ θ fixed) Note : Optimum vision with the naked eye and viewing angle θ at Cmax above are not always the same. * Definition of response time 1/f FRM V opr Voltage 0 (V) Unselected state (display OFF) Selected state (display ON) Unselected state (display OFF) 10% Dark Brightness 90% 100% Bright t on t off Vop : Operating voltage (V) ton : Response time (rise) (ms) fFRM : Frame frequency (Hz) toff : Response time (fall) (ms) DATA VISION 03/09/19 8 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 2.7 LED Back-light Characteristics 2.7.1 Absolute maximum ratings Ta = 25°C Item Symbol Condition Min. Typ. Max. Unit If=280mA, Forward voltage Vf 3.8 4.1 4.4 V -- 470 -- LUX -- 573 -- nm -- 30 -- nm -- -- 0.28 mA Yellow Green If=280mA, *Luminous Intensity IV Yellow Green Peak Emission If=280mA, λP Wavelength Spectrum Radiation Yellow Green If=280mA, ∆λ Bandwidth Yellow Green VR=8V, Reverse Current IR Yellow Green Note: * Measured at the bare LED back-light unit. 2.7.2 LED Maximum Operating Range Item Symbol Yellow Green Unit Power Dissipation PAD 2.2 W Forward Current IF 500 mA Reverse Voltage VR 8 V DATA VISION 03/09/19 9 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 3. RELIABILITY 3.1 Reliability Test item Test condition Evaluation and assessment Operation at high temperature and humidity 40 o C±2 o C 90%RH for 500hours No abnormalities in functions* and appearance** Operation at high temperature 60 o C±2 o C for 500 hours No abnormalities in functions* and appearance** Heat shock -20± ~ +60 o C Left for 1 hour at each temperature, transition time 5 min, repeated 10times No abnormalities in functions* and appearance** Low temperature -20±2 o C for 500 hours No abnormalities in functions* and appearance** Vibration Sweep for 1 min at 10 Hz, 55Hz, 10Hz, amplitude 1.5mm 2 hrs each in the X,Y and Z directions No abnormalities in functions* and appearance** Drop shock Dropped onto a board from a height of 10cm No abnormalities in functions* and appearance** * Dissipation current, contrast and display functions ** Polarizing filter deterioration, other appearance defects 3.2 Liquid crystal panel service life 100,000 hours minimum at 25 o C±10 o C 3.3 Definition of panel service life l Contrast becomes 30% of initial value l Current consumption becomes three times higher than initial value l Remarkable alignment deterioration occurs in LCD cell layer l Unusual operation occurs in display functions DATA VISION 03/09/19 10 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 4. OPERATING INSTRUCTIONS 4.1 Input signal Function NO. Symbol 1 VSS Ground (0V) 2 VCC Power supply for Logic circuit 3 V0 Power Supply for Driving the LCD 4 RS Data / Instruction select 5 R/W 6 E Enable signal 7-14 DB0-DB7 Data Bus line 15 LED A Power supply for LED 16 LED K Power supply for LED DATA VISION Function Read / Write select 03/09/19 11 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 4.2 Voltage Generator Circuit +5V VCC VCC-V0 LCM V0 VCC VR Vss VCC-V0 : LCD Driving Voltage VR : 10K~ 20K LEDA(+) LED Back-light LEDK(-) DATA VISION 03/09/19 12 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 4.3 Circuit Block Diagram COM 1~16 LCD Panel (20 Characters x 4 Lines Dot Matrix) COM 1’~16’ SEG 41~120 SEG 121~200 Driver/Controller LSI Segment Driver Segment Driver SEG 1~40 VSS, VCC, V0, RS, R/W, E, DB0~DB7 (INTERFACE) Controller Signal to MPU DATA VISION 03/09/19 13 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 4.4 Timing Characteristics Write Mode Timing Diagram Read Mode Timing Diagram DATA VISION 03/09/19 14 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 4.5 Instruction Description DATA VISION 03/09/19 15 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 DATA VISION 03/09/19 16 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 DATA VISION 03/09/19 17 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 DATA VISION 03/09/19 18 / 22 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 4.6 Instruction table DATA VISION 03/09/19 19 / 22 4.7 Font table 0066-22 Upper 4bit Lower 4bit LLLL LLLL CG RAM (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) LLHL LLHH LHLL LHLH LHHL LHHH HLLL HLLH HLHL HLHH HHLL HHLH HHHL HHHH Thu Dec 13 15:03:40 2001 SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: DV-20400-S1FBLY/R22 5. NOTES Safety l If the LCD panel breaks, be careful not to get the liquid crystal in your mouth. If the liquid crystal touches your skin or clothes, wash it off immediately using soap and plenty of water. Handling l Avoid static electricity as this can damage the CMOS LSI. l The LCD panel is plate glass; do not hit or crush it. l Do not remove the panel or frame from the module. l The polarizing plate of the display is very fragile; handle it very carefully Mounting and Design l Mount the module by using the specified mounting part and holes. l To protect the module from external pressure, leave a small gap by placing transparent plates (e.g. acrylic or glass ) on the display surface, frame, and polarizing plate l Design the system so that no input signal is given unless the power-supply voltage is applied. l Keep the module dry. Avoid condensation, otherwise the transparent electrodes may break. Storage l Store the module in a dark place where the temperature is 25 o C±10 o C and the humidity below 65% RH. l Do not store the module near organic solvents or corrosive gases. l Do not crush, shake, or jolt the module (including accessories). Cleaning l Do not wipe the polarizing plate with a dry cloth, as it may scratch the surface. l Wipe the module gently with soft cloth soaked with a petroleum benzine. l Do not use ketonic solvents (ketone and acetoe) or aromatic solvents (toluene and xylene), as they may damage the polarizing plate. 6. OPERATION PRECAUTIONS Any changes that need to be made in this specification or any problems arising from it will be dealt with quickly by discussion between both companies. DATA VISION 03/09/19 21 / 22