SmartSwitch TM Wide View Compact LCD 64 x 32 Pushbutton DISTINCTIVE CHARACTERISTICS Compact Size Combined with High Resolution • • • • • • • • • • • High resolution of 64 x 32 pixels 64 colors of backlighting can be controlled dynamically Pushbutton switch with LCD, RGB LED backlighting General brightness of backlight is dynamically controlled in eight steps from dark to bright Operated by commands and data supplied via serial communications (SPI) Can display as many as four lines of text with ten characters each Incorporates bitmap display function Programmable display graphics for alphanumeric characters and animated sequences Dual image VRAM for quick change of displayed images Low energy consumption Dust tight construction Viewing area: 14.5mm x 11.8mm (horizontal x vertical) Variety of LED backlighting with 64 colors and 8 steps brightness Dome gives crisp tactile feedback to positively indicate circuit transfer Epoxy sealed straight PC terminals Snap-in standoff for easy, secure mounting and alignment Actual Size ATTENTION PART NUMBER & DESCRIPTION ELECTROSTATIC SENSITIVE DEVICES Part Number Switch Description LCD Mode IS15ESBFP4RGB SPST Momentary ON Gold Contacts Straight PC Terminals Black & White FSTN Positive LED Color Red/Green/Blue 4.1.15 www.nkk.com 1 SmartSwitch TM Wide View Compact LCD 64 x 32 Pushbutton IS15ESBFP4RGB RGB LED Backlight Black and White LCD SWITCH SPECIFICATIONS Circuit SPST normally open Electrical Capacity (Resistive Load) 100mA @ 12V DC Contact Resistance 200 milliohms maximum @ 20mV 10mA Insulation Resistance 100 megohms minimum @ 100V DC Dielectric Strength 125V AC for 1 minute minimum Mechanical Endurance 1,000,000 operations minimum Electrical Endurance 1,000,000 operations minimum Operating Force 1.7 ± 0.5 Newtons Total Travel 1.8mm (.177”) TYPICAL SWITCH DIMENSIONS Terminal numbers are not on the switch. (14.5) .571 (14.06) .554 See Pixel Detail (18.0) .709 (12.8) .504 (10.8) .425 (9.74) .383 (10.0) .394 (16.0) .630 (0.3) Typ .012 (0.6) Typ .024 (0.2) Typ .008 Standoff 1 Standoff 2 (1.0) Typ .039 2 8 (7.62) (15.0) .300 .591 (11.8) .465 4 1 (0.4) Typ .016 (15.5) .610 (0.285) .0112 Pixel Detail (1.5) .059 See Standoff Detail (23.0) .906 (19.0) .748 (0.200) .0079 (0.02) Typ .0008 (0.3) .012 Standoff 2 (6.15) .242 A (1.25) .049 Footprint (2.0) Dia .079 Dimension A Standoff 1 = (2.7) Standoff 2 = (2.3) .091 .106 www.nkk.com (2.0) .079 (6.35) .250 (16.0) .630 6x (0.75) Dia .030 (1.5) .059 (5.0) .197 2 Standoff 1 (3.2) .126 Standoff Detail (5.0) .197 3 (1.0) Typ .039 (2.0) .079 2x (0.9) Dia .035 2 8 7 6 5 4 3 (6.15) .242 1 (6.35) .250 (7.62) .300 (15.0) .591 4x (1.3) Dia .051 Landless SmartSwitch TM Wide View Compact LCD 64 x 32 Pushbutton LCD SPECIFICATIONS Characteristics of Display Display Operation Mode FSTN positive; background colors, black & white Display Condition Transflective with built-in LED backlight Viewing Angle Direction 6 o’clock Viewing Area 14.5mm x 11.8mm (horizontal x vertical) Pixel Format 64 x 32 pixels (horizontal x vertical) Pixel Size 0.200mm x 0.285mm (horizontal x vertical) *Operating Temperature Range –15°C ~ +50°C (+5°F ~ +122°F) Storage Temperature Range –20°C ~ +60°C (–4°F ~ +140°F) Backlight LED RGB: red/green/blue * In a low temperature environment (below 0°C), speed and contrast decrease when image changes. The non-indicator dot may become dense in a high temperature environment (about +50°C). Highest backlight brightness level should not be used for temperatures above +35°C. Absolute Maximum Ratings (Temperature at 25°C) Items Symbols Ratings Supply Voltage VDD –0.3V to +7.0V Input Voltage VI –0.3V to VD D +0.3V Output Voltage VO –0.3V to VD D +0.3V Optical Characteristics (Temperature at 25°C) Items Symbols Min Typical Max Cr –– 3.0 –– Up & Down q –– 90° –– Right & Left f –– 90° –– Contrast Ratio Viewing Angle (Cr ≥ 1.1) Recommended Operating Conditions (Temperature at 25°C) Items Symbols Minimum Typical Maximum Supply Voltage VDD 4.9V 5.0V 5.1V High Level Input Voltage VI H 0.8 VDD — — Low Level Input Voltage VI L — — 0.2VDD SPI Clock Frequency fSCK — — 8MHz Current Consumption I DD ** 10mA — *** 60mA ** 10mA: Backlighting LED is off *** 60mA: Backlighting LEDs (Red, Green, Blue) are maximum brightness www.nkk.com 3 SmartSwitch TM Wide View Compact LCD 64 x 32 Pushbutton BLOCK DIAGRAM & PIN CONFIGURATIONS SW SW GND VDD Terminal of Switch Terminal of Switch Ground Power 5 6 SDO SDI SCK Data Out Data In Serial Clock 8 SS Function Com1......Com32 1 2 3 4 7 Name Common Driver Symbol 32bit Shift Register Pin No. Normally open Normally open seg1.......seg64 Segment Driver Power source for logic circuit and LCD Data output line for SPI Data input line for SPI Clock line for SPI that synchronizes commands and data Chip select for SPI; line is active low Slave Select 64 x 32 Dot Matrix LCD Panel Backlight LED 64bit Shift Register Display Controller RAM #1 256Byte SS Red Green Blue RAM #2 256Byte 8 SCK 7 SDI 6 LED Driver SPI SDO 5 VDD 4 GND 3 SW 2 SW 1 Circuit Example TIMING SPECIFICATIONS CLK_1 SPI Characteristics (See Timing Diagram) (Temperature at –15°C ~ +50°C and VDD = 5.0V ± 2%) Items Symbols Minimum SPI_SS Set Up Time ts S S 10ns SPI_SS Hold Time th S S 10ns SPI_CLK Cycle tc yc CK SPI_CLK Width thw CK 10ns SPI_DI Set Up Time ts D I 10ns SPI_DI Hold Time th D I 10ns SPI_DO Delay Time td D O 10ns Maximum 8MHz SCK SDI SS SCK SDI SS SCK SDI IS_1 IS_2 IS_3 SCK SDI SS SCK SDI SS SCK SDI SS IS_4 IS_5 IS_6 SCK SDI SS SCK SDI SS SCK SDI SS SS CLK_2 CLK_3 IS_7 DATA_1 IS_8 IS_9 DATA_2 DATA_3 It is recommended that all SS pins be connected to a controller pin instead of ground. A clock glitch during power up could cause the communication to fall out of sync. Toggling the SS line resets the communication. SPI Timing Chart (SS Using) SPI Timing Chart (SS Low Level Fixed) t h SS t s SS SS Low SS t c y c CK t cy c CK th w CK SCK th DI SDI SCK t s DI t s DI SDI D7 D6 D5 D4 D3 D2 D1 D0 4 t h DI D7 D6 D5 D4 D3 D2 D1 D0 t d DO SDO td DO SDO t hw CK D7 D6 D5 D4 D3 D2 D1 D0 www.nkk.com D7 D6 D5 D4 D3 D2 D1 D0 SDI and SCK shall be kept high when idle. SmartSwitch TM Wide View Compact LCD 64 x 32 Pushbutton BITMAP Segment Common 1 2 3 4 5 6 7 8 9 • • • 16 ••••• 49 • • • 56 Byte8 Byte7 ••• Byte2 Byte1 COM1 D0 D1 D2 D3 D4 D5 D6 D7 D0 • • • D7 ••• D0 • • • D7 D0 D1 D2 D3 D4 D5 D6 D7 Byte16 Byte9 COM2 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7 • • • • • • • • • Byte256 COM32 57 58 59 60 61 62 63 64 ••• ••• Byte249 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7 Transferring Display Data/Displaying LCD Command and Data Sequence Command Data (256 Bytes) 0 x 55 Byte1 Byte2 • • • Byte255 0 1 0 1 0 1 0 1 D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 • • • D1 D0 Byte256 D7 D6 D5 D4 D3 D2 D1 D0 Notes: Display RAM has two screen areas. The first area is for the display on current LCD; the second area is for the data to be displayed next. The screens are changed when the second area is fully stored. COMMANDS & DATA • Transferring display data/displaying on LCD: command (1 Byte) + data (256 Bytes) • Others: command (1 Byte) + data (1 Byte) • Commands can be accepted only when all bits coincide; otherwise, they are not acknowledged • Additional commands will not be received until the communication of commands (1 Byte) and data (256 or 1 Byte) is completed • There is no time limit from the beginning to end of data receipt • Commands may be executed consecutively (no need to wait between commands) • Irregular commands or data are not recognized • Initial status at power activation: LCD display off, LED off (brightness 1/20, color off) Transferring Display Data/Displaying on LCD Command Hex Binary 0 x 55 01010101 Data Remarks 256 Bytes (64 x 32 = 2,048 bits) See above for details of bitmap data Data Remarks LED (Backlight) Color Set Command Hex Binary 0 x 40 01000000 R R G G B B 1 1 2 bits x 3 00 = off 01 = 1/4 For each of RGB: 10 = 1/2 11 = full LED (Backlight) Brightness Set Command Hex Binary 0 x 41 01000001 Data Remarks *** 1 1 1 1 1 3 bits For leading 3bits: 000 = 1/20 (dark) 100 = 1/3 001 = 1/10 101 = 1/2 010 = 1/7 110 = 2/3 011 = 1/5 111 = full (bright) Reset (Returning to Initial Status at Power Activation) Command Hex Binary 0 x 5E 01011110 Data Remarks 00000011 Returning to initial status at power activation www.nkk.com 5 SmartSwitch TM Handling & Storage PRECAUTIONS FOR HANDLING & STORAGE OF LCD 64 x 32 DEVICES Handling ATTENTION 1. The IS Series devices are electrostatic sensitive. ELECTROSTATIC SENSITIVE DEVICES 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 60°C at the LCD level. Wave Soldering: see Profile B in Supplement section. Manual Soldering: see Profile A in Supplement section. 7. Excessive images may result after the same image is emitted continuously for an extended period of time. 8. The highest backlight brightness level should not be used for temperatures above +35°C. 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. 6 www.nkk.com