Datasheet
NT7603
6 V2.3
Absolute Maximum Ratings*
Power Supply Voltage (V
DD
) . . . . . . . . . . -0.3V to + 7.0V
Power Supply Voltage (V
1 to V5) . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND to V
DD + 0.3V
Input Voltage (V
I
) . . . . . . . . . . . . . . . -0.3V to VDD + 0.3V
Operating Temperature (T
OPR
) . . . . . . .-20
°
C to + 70
°
C
Storage Temperature (T
STG) . . . . . . . .-55
°
C to + 125
°
C
*Comments
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to this device.
These are stress ratings only. Functional operation of this
device at these or any other conditions above those
indicated in the operational sections of this specification is
not implied or intended. Exposure to the absolute maximum
rating conditions for extended periods may affect device
reliability.
!
All voltage values are referenced to GND = 0V
!
V
1
to V
5
, must maintain V
DD
≥
V
1
≥
V
2
≥
V
3
≥
V
4
≥
V
5 ≥
GND
DC Electrical Characteristics
(V
DD
= 5.0V, GND = 0V, T
A
= 25
°
C)
Symbo
l
Parameter Min. Typ. Max. Unit Conditions Applicable Pin
VDD Operating Voltage 2.8 5.0 5.5 V
VIH1 "H" Level Input Voltage (1) 0.8 VDD - VDD V
DB0 - DB7, RS,
R/W,
VIL1 "L" Level Input Voltage (1) -0.3 - 0.2 VDD V E,OSC1
V
OH1
"H" Level Output Voltage (1) V
DD
- 0.6 - - V I
OH
= -1.2mA DB0 - DB7
V
OL1
"L" Level Output Voltage (1) - - GND + 0.6 V I
OL
= 1.2mA (CMOS)
VCOM Driver Voltage Descending (COM) - - 0.3 V
I
D
= 5
µ
A
COM1 - 16
VSEG Driver Voltage Descending (SEG) - - 0.3 V
I
D = 5
µ
A
SEG1 - 80
IIL Input Leakage Current -1 - 1
µ
A
VIN = 0 to VDD
Not include
OSC1
-IP Pull-up MOS Current 50 125 250
µ
A
VDD = 5V
RS, R/W,
DB0-DB7
IOP Power Supply Current - 1 1.5 mA
Rf oscillation,
from external
clock V
DD
= 5V,
f
OSC = fCP =
540KHz,
include LCD
bias current.
VDD
External Clock Operation
fCP External Clock Operating Frequency 380 540 750 KHz
tDUTY External Clock Duty Cycle 45 50 55 %
tRCP External Clock Rising Time 0.1 - 0.5
µ
S
tFCP External Clock Falling Time 0.1 - 0.5
µS
Internal Clock Operation (Built-in RC Oscillator)
fOSC Oscillator Frequency 380 540 750 KHz V
DD
= 2 .8V ~ 5.5V
VLCD LCD Driving Voltage 3.0 - VDD V VDD - V5