SMARTSWITCH
TM
LCD SPECIFICATIONS
Characteristics of Display
Display Operation Mode
Display Condition
Viewing Angle
Driving Method
Viewing Area
Pixel Format
Pixel Size
STN positive
Transflective with built-in LED backlight
Adjustable
1/24 duty. 1/5 bias (built-in driving circuit)
15.0mm x 10.8mm (horizontal x vertical)
36 x 24 dots (horizonal x vertical)
0.36mm x 0.36mm (horizontal x vertical)
Backlight LED
Yellow/Green
Yellow/Green Bicolor LED
with Yellow LCD Mode
Absolute Maximum Ratings (Temperature at 25°C)
Recommended Operating Conditions (Temperature at 25°C)
Items
Supply Voltage for Logics
Supply Voltage for LCD
Input Voltage
Output Voltage
Symbols
V DD
V L C
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 Yellow
Input Voltage
Driving Frequency
Symbols
V DD
V LC
V I
f FL M
Minimum
4.5V
––
0V
––
Typical
5.0V
7.4V
––
64Hz
Maximum
5.5V
––
V DD
––
DC Characteristics of LCD Drive IC (Temperature at 0°C to 40°C and V DD = 5.0V ±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 I H
V I L
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 LO H
I LO L
I DD
I O H = –500μA
I O L = 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 ~ 7.5V
500
2,000
μA
Timing Characteristics of LCD Drive IC
Timing Diagram
(Temperature at 0°C to 40°C and V DD = 5.0V ±10%)
Items Symbols Minimum Maximum
Clock Operation Frequency f S CP 6.0MHz
Latch Pulse Frequency f LP 50kHz
Clock High Level Pulse Width t CWH 70ns
Clock Low Level Pulse Width t CWL 70ns
Data Setup Time t DSD 45ns
Data Hold Time t DHD 50ns
SCP
Din
Dout
t r
t CW H t CWL
t DSD
t DHD
t PDO
t f
*1
t DSL
*2
t DHL
Data Output Delay Time
Latch Setup Time
t PDO
t DSL
50ns
25ns
LP
t r
*3
t LWH
t f
Latch Hold Time
Latch High Level Width
FLM Setup Time
FLM Hold Time
SCP, LP Rise/Fall Time
t DHL
t LW H
t DSF
t DHF
t r /t f
50ns
200ns
50ns
50ns
15ns
FLM
t DSF
*1 Last data on first line
*2 Beginning data on second line
*3 Location of LP signal on first line
t DHF
NKK Switches ? email: smartswitch@nkkswitches.com ? Phone (480) 991-0942 ? Fax (480) 998-1435 ? www.nkksmartswitch.com
2
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