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SmartSwitch
Compact LCD 36 x 24 Pushbutton
SWITCH SPECIFICATIONS
TM
Circuit
SPST normally open
Electrical Capacity (Resistive Load)
Contact Resistance
Insulation Resistance
Dielectric Strength
Mechanical Endurance
100mA @ 12V DC
200 milliohms maximum @ 20mV 10mA
100 megohms minimum @ 100V DC
125V AC for 1 minute minimum
1,000,000 operations minimum
Electrical Endurance
Operating Force
Total Travel
Operating Temperature Range
Storage Temperature Range
1,000,000 operations minimum
2.2 ± 0.5 Newtons
1.8mm (.071”)
0°C ~ +40°C (+32°F ~ +104°F)
–10°C ~ +60°C (+14°F ~ +140°F)
LCD SPECIFICATIONS
Characteristics of Display
Display Operation Mode
Display Condition
Viewing Angle
Driving Method
Viewing Area
Pixel Format
Pixel Size
STN positive, FSTN positive
Transflective with built-in LED backlight
Adjustable
1/24 duty. 1/5 bias (built-in driving circuit)
13.0mm x 10.7mm (horizontal x vertical)
36 x 24 pixels (horizontal x vertical)
0.32mm x 0.32mm (horizontal x vertical)
Backlight LED Single color: white. Bicolor: red/green, yellow/green. RGB: red/green/blue
Absolute Maximum Ratings (Temperature at 25°C) Recommended Operating Conditions (Temperature at 25°C)
E
Items
Supply Voltage for Logics
Supply Voltage for LCD
Input Voltage
Output Voltage
Symbols
V DD
V LC
V I
V O
Ratings
–0.3V to +7.0V
–0.3V to +12.0V
–0.3V to V DD +0.3V
–0.3V to V DD +0.3V
Items
Supply Voltage for Logics
Supply Voltage
Input Voltage
Driving Frequency
Symbols
V DD
V LC
V I
f FLM
Minimum
4.5V
––
0V
––
Typical
5.0V
7.3V
––
150Hz
Maximum
5.5V
––
V DD
––
DC Characteristics of LCD Drive IC (Temperature at 0°C to 40°C and V DD = ±10%)
Items
Symbols
Test Conditions
Minimum
Typical
Maximum
Unit
High Level Input Voltage
Low Level Input Voltage
High Level Input Leakage Current
Low Level Input Leakage Current
V IH
V IL
I LIH
I LIL
V I = V DD
V I = 0V
0.7 V DD
0
V DD
0.3 V DD
10
–10
V
V
μA
μA
High Level Output Voltage
Low Level Output Voltage
High Level Output Leakage Current
Low Level Output Leakage Current
Supply Current
V OH
V OL
I LOH
I LOL
I DD
I CH = –500μA
I OL = 500μA
V O = V DD
V O = 0V
f SCP = 1.0MHz
V DD –0.5
0.5
10
–10
500
V
V
μA
μA
μA
LCD Drive Current
I LC
f LP = 2.4kHz V LC = 7.3V
500
2,000
μA
Timing Characteristics of LCD Drive IC
(Temperature at 0°C to 40°C and V DD = 5.0V ±10%)
t r
t CW H t CWL
Timing Diagram
t f
Items
Clock Operation Frequency
Latch Pulse Frequency
Clock High Level Pulse Width
Clock Low Level Pulse Width
Data Setup Time
Data Hold Time
Symbols
f SCP
f LP
t CWH
t CWL
t DSD
t DHD
Minimum
70ns
70ns
45ns
50ns
Maximum
6.0MHz
50kHz
SCP
Din
Dout
t DSD
t DHD
t PDO
*1
t DSL
*2
t DHL
Data Output Delay Time
Latch Setup Time
Latch Hold Time
Latch High Level Width
FLM Setup Time
FLM Hold Time
SCP, LP Rise/Fall Time
t PDO
t DSL
t DHL
t LWH
t DSF
t DHF
t r /t f
50ns
50ns
200ns
50ns
50ns
25ns
15ns
LP
FLM
*1 Last data on first line
*2 Beginning data on second line
*3 Location of LP signal on first line
t r
*3
t LWH
t DSF
t f
t DHF
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