Download Specifications

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
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 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
DESCRIPTION
Part Number
Switch Description
LCD Mode
LED Color
IS15BAFP4CF
SPST
Momentary ON
Gold Contacts
Straight PC Terminals
Black & White
FSTN Positive
Red/Green
11.25.15 Rev
www.nkk.com
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
Red/Green
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
BLOCK DIAGRAM & PIN CONFIGURATIONS
6
8
9
LP
Pin No.
1
36 x 24 Dot Matrix
LCD Panel
seg1
seg36
Segment Driver
CK
40bit Latch
CK 40bit
D Shift Register Q
Din
4
Dout
2
SW
3
BL-LED (–)
13
BL-LED (–)
GND
SW
12
Timing Control
Com24
7
FLM
SCP
Com1
5
IS15BAFP4CF
Red/Green LED Backlight
Black and White LCD
Common Driver
10
D 24bit
CK Shift Register
11
VLC
VDD
1
BL-LED (+)
Symbol
Name
Function
SW
Terminal of Switch
Normally open
2
SW
Terminal of Switch
Normally open
3
BL-LED (–)
Terminal of Backlight LED
Green
4
Dout
Data Output
First Line Marker
Input signal frame
Latch Pulse
Input display latch signal
Input display shift clock
5
FLM
6
LP
7
SCP
Serial Clock Pulse
8
Din
Data Input
9
GND
Ground
10
VDD
Power
11
VLC
Power
12
BL-LED (+)
Terminal of Backlight LED
Anode
13
BL-LED (–)
Terminal of Backlight LED
Red
www.nkk.com
3
SmartSwitch
TM
Wide View LCD 36 x 24 Pushbutton
LED SPECIFICATIONS
Display Electrical Characteristics
Items
Symbols
Supply Voltage
LED
Maximum
4.5
5.0
5.5
LCD Circuit
VLC
7.1
7.3
7.5
H
VI H
0.7V DD
—
VDD
L
VI L
0
—
0.3 VDD
H
VO H
DO U T, I O H = 500 μ A
VDD –0.5
—
—
L
VO L
DO U T, I O L = 500 μ A
—
—
0.5
Logic Circuit
I DD
fs c p = 1.0MHz
—
—
500
LCD Circuit
I LC
fL P = 2.4kHz VL C = 7.3V
—
500
2,000
Output Voltage
Symbols
Forward
Current
Typical
VDD
LCD
Items
Minimum
Logic Circuit
Input Voltage
Power
Test Condition
Test
Condition
LED Colors
LED Absolute Maximum Ratings (Temperature at25°C)
Standard
Red/Green
IF
Standard
15mA
Forward
Voltage
VF
I F = Forward
Current
Ta = 25°C
Current
Reduction Rate
∆ I F (D C)
Ta = 25°C above
Red/Green
Color
Red
Green
Unicolor
1.9V
1.9V
LED Overall
Red
Green
50mW
50mW
100mW
–0.26mA/°C
TYPICAL SWITCH DIMENSIONS
(17.0)
.669
See
Pixel Detail
(17.78)
.700
See Standoff
Detail
(16.54)
.651
13
(12.34)
.486
12
(13.0)
.512
(17.78)
.700
(7.62)
.300
(12.5)
.492
4
(14.8)
.583
(20.59)
.811
3
(0.6) Typ
.024
(18.5)
.728
(23.13)
.911
(10.5)
.413
(2.5)
.098
(12.5)
.492
(1.25) Typ
.049
(3.2)
.126
(2.8)
.110
(12.7)
.500
(2.5)
.098
Terminal numbers are not on the switch.
13x (0.8) ~ (1.0) Dia
.031 .039
(17.78)
.700
(0.440)
.0173
(0.02) Typ
.0008
(0.3)
.012
(0.495)
.0195
(0.6)
.024
(12.5)
.492
13
11
9
7
(0.75) Dia
.030
(1.8) Dia
.071
5
3
4
Standoff Detail
www.nkk.com
2
8
6
4
1
(1.25) Typ
.049
(2.5)
.098
Pixel Detail
12
10
(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
Similar pages