SmartSwitch TM Wide View LCD 36 x 24 Pushbutton DISTINCTIVE CHARACTERISTICS Standard with Enhanced LED Illumination: • Broad and even light diffusion • Consistent backlighting • Low energy consumption Programmable LCD Variety of LED Backlighting Colors Rubber Dome Epoxy Sealed Straight PC Terminals RGB backlighting provides infinite color availability. Programmable to display graphics, alphanumeric characters and animated sequences. Integrated liquid crystal display provides wide viewing angle with high contrast and clarity. Wider viewing area of 17.0mm x 13.0mm (horizontal x vertical) at 36 x 24 pixels. Dome gives crisp tactile feedback to positively indicate circuit transfer. High reliability and long life of one million actuations minimum. Epoxy sealed terminals prevent entry of solder flux and other contaminants. Optional accessories available to enhance panel design and simplify production process. Actual Size ATTENTION PART NUMBER & DESCRIPTION ELECTROSTATIC SENSITIVE DEVICES Part Number Switch Description LCD Mode LED Color IS15BBFP4RGB SPST Momentary ON Gold Contacts Straight PC Terminals Black & White FSTN Positive * Red/Green/Blue * Simultaneous RGB illumination achieves infinite colors. www.nkk.com 4.1.15 1 SmartSwitch TM Wide View LCD 36 x 24 Pushbutton SWITCH SPECIFICATIONS Circuit LCD SPECIFICATIONS SPST normally open Electrical Capacity (Resistive Load) 100mA @ 12V DC Characteristics of Display Display Operation Mode FSTN positive Display Condition Transflective with built-in LED backlight Contact Resistance 200 milliohms max @ 20mV 10mA Insulation Resistance 100 megohms min @ 100V DC Viewing Angle 6 o’clock Dielectric Strength 125V AC for 1 minute minimum Driving Method 1/24 duty. 1/5 bias (built-in driving circuit) Mechanical Endurance 1,000,000 operations minimum Electrical Endurance 1,000,000 operations minimum Viewing Area 17.0mm x 13.0mm (horizontal x vertical) Operating Force 2.2 ± 0.5 Newtons Pixel Format 36 x 24 pixels (horizontal x vertical) Total Travel 1.8mm (.071”) Pixel Size 0.440mm x 0.495mm (horizontal x vertical) Operating Temp. Range –20°C ~ +60°C (–4°F ~ +140°F) Storage Temp. Range –30°C ~ +70°C (–22 °F ~ +158°F) Backlight LED RGB: red/green/blue Absolute Maximum Ratings (Temperature at 25°C) Items Symbols Recommended Operating Conditions (Temperature at 25°C) Ratings Items Symbols Minimum Typical Maximum Supply Voltage for Logics VDD –0.3V to +7.0V Supply Voltage for Logics VDD 4.5V 5.0V 5.5V Supply Voltage for LCD VLC –0.3V to +12.0V Supply Voltage Black/White VLC 7.1V 7.3V 7.5V Input Voltage VI –0.3V to VD D +0.3V Input Voltage VI 0V –– VDD Output Voltage VO –0.3V to VD D +0.3V Driving Frequency fFLM –– 150Hz: black/white –– DC Characteristics of LCD Drive (Temperature at –20°C to +60°C and VDD = 5.0V ±10%) Items Symbols Test Conditions Minimum Typical Maximum Unit High Level Input Voltage VIH 0.7VDD VD D V Low Level Input Voltage VI L 0 0.3VD D V High Level Input Leakage Current ILI H VI = VD D 10 μA Low Level Input Leakage Current ILIL VI = 0V –10 μA High Level Output Voltage VOH I O H = –500μA Low Level Output Voltage VOL I O L = 500μA 0.5 V High Level Output Leakage Current I LO H VO = VD D 10 μA Low Level Output Leakage Current I LO L VO = 0V –10 μA Supply Current ID D f S CP = 1.0MHz 500 μA LCD Drive Current I LC f L P = 2.4kHz VLC = 7.3V 2,000 μA VDD –0.5 500 Timing Characteristics of LCD Drive IC Timing Diagram (Temperature at –20°C to +60°C and VDD = 5.0V ±10%) Items Symbols Minimum Clock Operation Frequency f SCP Latch Pulse Frequency f LP Clock High Level Pulse Width tC WH 70ns Clock Low Level Pulse Width tC WL 70ns Data Setup Time t DS D 45ns Data Hold Time tD H D 50ns Data Output Delay Time tPD O Latch Setup Time t DS L 50ns Latch Hold Time tD H L 50ns Latch High Level Width t LW H 200ns FLM Setup Time t DS F 50ns FLM Hold Time tD H F 50ns SCP, LP Rise/Fall Time t r/t f 2 V tr Maximum 6.0MHz 50kHz SCP Din tCWH tCWL tDSD tf tDHD tPDO *1 Dout 25ns LP FLM 15ns www.nkk.com *2 tDSL *3 tLWH tr tDSF *1 Last data on first line *2 Beginning data on second line *3 Location of LP signal on first line tDHL tf tDHF SmartSwitch TM Wide View LCD 36 x 24 Pushbutton IS15BBFP4RGB RGB LED Backlight Black and White LCD 7 9 10 1 Timing Control LP SW Blue BL-LED (+) Symbol Name SW Terminal of Switch 2 SW Terminal of Switch Normally open 3 BL-LED (–) Terminal of Backlight LED Cathode for red BL-LED (–) Terminal of Backlight LED Cathode for blue 4 seg36 Segment Driver 40bit Latch 5 Dout 2 SW 3 BL-LED (–) 4 BL-LED (–) 14 BL-LED (–) GND 1 seg1 CK 40bit D Shift Register Q Din Green Pin No. 36 x 24 Dot Matrix LCD Panel CK Red 13 Com24 8 FLM SCP Com1 6 Common Driver 11 D 24bit CK Shift Register 12 VLC VDD Function Normally open 5 Dout Data Output Display serial output. Can be used to connect to Din of the next SMARTSWITCH. As a result, many SMARTSWITCHES can be controlled with one clock and data signal. 6 FLM First Line Marker The marking signal for the first line data of LCD display. The first line of LCD will be selected by the falling edge of LP signal during the high level (FLM). 7 LP Latch Pulse 8 SCP Serial Clock Pulse 9 Din Data Input 10 GNDGround Line data latch pulse will latch content of internal 40-bit shift register at falling edge for one line of display. LP will also increment the display line by one. Clock used by 40-bit internal shift register of the switch, shifting the display data bit presented at Din at falling edge. Display serial data bit. Note: to map the display data, because of the difference between the number of internal shift register data (40) and the single line of LCD pixels (36), the first four bits of data shifted will be dummy bits. 11 VDD Power Power source for logic circuit 12 VLC Power Power source for LCD drive 13 BL-LED (+) Terminal of Backlight LED Anode for common 14 BL-LED (–) Terminal of Backlight LED Cathode for green www.nkk.com 3 SmartSwitch TM Wide View LCD 36 x 24 Pushbutton SUPER BRIGHT RGB LED SPECIFICATIONS Typical Electrical Characteristics (Temperature at 25°C) Backlight Color Symbols Red Green Blue Unit Forward Current IF 10 8.5 8.0 mA Forward Voltage VF 2.0 2.8 2.8 V ABSOLUTE MAXIMUM FOR RGB LED Electrical Characteristics (Temperature at 25°C) Backlight Color Symbols Red Green Blue Unit Forward Current IF 20 20 20 mA Forward Voltage VF 2.0 (I F = 10mA) 2.8 (I F = 8.5mA) 2.8 (I F = 8.0mA) V Reverse Voltage VR 4.0 4.0 4.0 V Current Reduction Rate Above 25°C ∆ I F (D C ) –0.33 –0.33 –0.33 mA/°C *Power Dissipation (LED Overall 115mW) PD 40 60 60 mW *For uniform light emission, Power Dissipation should not exceed the Absolute Maximum Rating, and the Forward Current should not exceed the derated Absolute Forward Current. TYPICAL SWITCH DIMENSIONS WITH RGB LED (17.0) .669 See Pixel Detail (16.54) .651 (10.5) .413 (10.0) .394 (17.78) .700 See Standoff Detail 14 13 (14.8) .583 (20.59) .811 (12.34) .486 (0.6) Typ .024 (13.0) .512 1 (7.62) (17.78) .300 .700 (13.75) .541 2 4 3 (1.25) Typ .049 (18.5) .728 (23.13) .911 (3.2) .126 (2.8) .110 (23.0) .906 (2.5) .098 (12.7) .500 Terminal numbers are not on the switch. 14x (0.9) Dia .035 (17.78) .700 (0.440) .0173 (0.02) Typ .0008 (0.3) .012 (0.495) .0195 Pixel Detail 4 (0.6) .024 (0.75) Dia .030 (1.8) Dia .071 Standoff Detail www.nkk.com 14 12 (13.75) .541 10 8 6 4 (1.25) Typ .049 (2.5) .098 13 2 11 9 7 1 5 3 (12.7) .500 Footprint (7.62) .300 (17.78) .700 2x (0.9) Dia .035 Landless SmartSwitch TM Handling & Storage PRECAUTIONS FOR HANDLING & STORAGE OF LCD 36 x 24 DEVICES Handling ATTENTION ELECTROSTATIC SENSITIVE DEVICES 1. The IS Series devices are electrostatic sensitive. 2. Limit operating force to keytop to 100.0N maximum, as excessive pressure may damage the LCD device. 3. The IS series devices are not process sealed. 4. If the LCD is accidentally broken, avoid contact with the liquid and wash off any liquid spills to the skin or clothing. 5. Clean cap surface with dry cloth. If further cleaning is needed, wipe with dampened cloth using neutral cleanser and dry with clean cloth. Do not use organic solvent. 6. Recommended soldering time and temperature limits: Do not exceed 70°C at the LCD level. Wave Soldering: see Profile B in the Supplement section. Manual Soldering for Switch: see Profile A in the Supplement section. Manual Soldering for Display: see Profile B in the Supplement section. 7. Recommendation for backlight color uniformity: Use constant current driver. For current limiting resistor method, the power source should be at least twice the backlight LED forward voltage. 8. The VLC voltage should not be applied before logic voltage. If VLC voltage is present before logic voltage, it may cause the driver logic to freeze and damage the LCD, and the driver logic may become damaged. 9. Backlight Forward Current should not exceed the derated Absolute Maximum Forward Current based on the temperature. 10. Excessive images may result after the same image is emitted continuously for an extended period of time. Storage 1. Store in original container and away from direct sunlight. 2. Keep away from static electricity. 3. Avoid extreme temperatures, high humidity, gaseous substances, and all forms of chemical contamination. www.nkk.com 5