--""--------------------------------
LCD-IV
• ELECTRICAL CHARACTERISTICS
-1
(Vee = 2.5
to
5.5V,
Ta
=
-20
to
+75°C)
Item
Symbol
Test Conditions
Value
Unit
Note
min.
max.
Input
"Low"
Voltage
VIL
-
0.15·Vce
V
Input
"High"
Voltage VIH
0.B5·Vee
Vee
V
(11)
Output
"Low"
Voltage
VOL
IOL
- 0.4
mA
-
0.4
V
Output
"High"
Voltage (1)
VOHl
-IOH
=
O.OB
mA
Vee-0.5
-
V
(1
)
Output
"High"
Voltage (2)
VOH2
-IOH -
0.01
mA
Vee-0.4
-
V
(2)
Driver
Voltage Descending
Vdl
Id = 0.05
mA
(COM)
-
0.5
V
(15)
Driver Voltage Descending
Vd2
Id = 0.01
mA
(SEG)
-
0.5
V
(15)
Dividing Resistor
of
LCD
Rwell
Power Supply
25
300
kil
Interrupt
Input
Hold Time
tiNT
20Tinst
-
IJ.s
(13)
Output
"High"
Current
IOH
VOH
=
Vee
-
4
IJ.A
(3)
I nput
Leakage
Current
IlL
Vin
= 0
to
Vee
-
2
IJ.A
(4), (11)
Pull up
MOS
Current
-Ip
Vee
=
3V
10
100
IJ.A
Vin
Vee,
Vee
Rf Oscillation
3V
Supply Current
lee
(fosc = 200 kHz)
-
0.3
mA
(5)
External Clock Operation
(fcp =
200 kHz)
Standby
I/O
Leakage
Current
ILS
HLT=0.5V,
Vin=OtoVee
-
1
IJ.A
(6), (11)
Standby
Supply Current (1)
leCSl
Vin
=
Vee,
HLT
=
O.lV,
-
6
IJ.A
(14)
Vee
= 2.5
to
3.3V
Standby
Supply Current (2)
lecs2
Vin
=
Vee,
HLT
=
O.lV,
-
50
IJ.A
(7)
Vee
= 2.5
to
3.3V
LCD Display Voltage
VLeD
Vee-
V
3
2.5
Vee
V
(10)
n - 1 (static)
Frame Frequency
of
LCD
fF
n = 2
(112
Duty)
1
Hz
Drive
n = 3 (1/3 Duty)
256 x n
)c
Tinst
(12)
n = 4 (1/4
Duty)
External Clock Operation; System Clock
--
- - - - - - - - - - - - -
- - - - - -
---
- - -
--
-
------
.-----
-
- - -
-
---
- -
--
--
External Clock Frequency fcp
130
300
kHz iB), (12)
Ext:.r:~al
Clock
Duty
Duty
45
55
%
(B)
External Clock
Rise
Time trcp
0
0.2
IJ.s
(B)
-------.--
External Clock Fall Time tfcp
0
0.2
IJ.s
(B)
Instruction Cycle Time
Tinst
Tinst = 4/fcp
13.3
31.3
IJ.s
(B)
I nternal Clock Operation (Rf Oscillation); System Clock
----------
---------
------
----------
Vee
=-2:5
to
3.5v
------
------
-
---
- - -
---
Clock Oscillation Frequency
fosc
Rf=270kil±2%
130
270
(9)
~ee=
2.5t05.5V
130
300
kHz
Instruction Cycle Time
Tinst
Tinst=4/fosc
~
ee - 2.5
to
3.5V 14.B
30.8
(9)
Vee=
2.5to5.5V
13.3
30.8
kHz
(NOTE)
All
voltages
are
with
respect
to
GND.
181
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