LCO-IV------------------------------------------------------------------
•
ELECTRICAL
CHARACTERISTICS-2
(T.
=
-20
to
+75°C)
Test
Conditions
Value
Item
Symbol
Unit
Note
min.
max.
Halt
Duration
Voltage
VDH
HLT
=
0.2V
2.3
-
V
(16)
Halt
Current
IDH
Vin =
Vee,
HL
T =
0.2V,
VDH =
2.3V
-
4.0
IJ.A
(16).
(18)
Halt
Delay
Time
tHO
100
-
IJ.s
(16)
Operation
Recovery
Time
tRe
100
-
IJ.s
(16)
HLT
Fall
Time
tfHLT
-
1000
IJ.S
(16)
HLT
Rise
Time
trHLT
-
1000
IJ.s
(16)
H L T
"Low"
Hold
Time
tHLT
400
-
IJ.S
(16)
HLT
"High"
Hold
Time
tOPR
100
-
IJ.S
(16)
RESET
Pulse
Width
(1)
tRST1
External
Reset,
HL
T =
Vee
10
-
ms
(17)
Prescaler
Clock
=
System
Clock
2·Tinst
Not
Clear
External
Prescaler
Prescaler
Reset,
Clock=~5
with
Reset
2·Tinst
RESET
Pulse
Width
(2)
tRST2
HLT=Vee
IXI
Clock
Signal
-
IJ.s
(17)
Vee=2.5V
(~)
Clear
~
to
5.5V
foscx
Prescaler
with
Reset
foscx
Signal
RESET
Rise
Time
trRST
External
Reset,
HL
T =
Vee
-
100
IJ.s
(17)
Vee
=
2.5
to
5.5V
RESET
Fall
Time
tfRST
External
Reset,
HL
T =
Vee
-
100
IJ.s
(17)
Vee
=
2.5
to
5.5V
(NOTE)
1.
Applied
to
PMOS
load of eMOS
output
pins and
CMOS
I/O common pins among 0 and R terminals.
2. Applied
to
CMOS
output
pins,
CMOS
I/O common pins, input pins with pull up
MOS,
and I/O common pins with pull up
MOS
among 0 and R terminals.
3.
Applied
to
open-cirain
output
pins and open-drain I/O common pins among 0 and R terminals.
4.
Pull
up
MOS
current
is
excluded.
5. Applied
to
the supply current when
the
LCD·IV
is
in
the reset state and the crystal oscillation for timer doesn't operate.
(Current that flows
in
input/o~t
circuit and
in
the power supply circuit for
LCD
is
excluded).
Test Condition:
RESET,
HLT
=
Vee
(Reset State)
D
••
/XO, DIS/XI L
D.
4
/XO, D.s/XI =
Vee
(Crystal oscillation for timer
is
not selected.)
V.
, V
2
,
V3
=
Vee
D
••
/XO = Open, 015 /XI =
Vee
(Crystal oscillation for timer
is
selected.)
COM.
to
COM., SEG.
to
SEG
32
= Open
When
the crvstal oscillation for timer operates, the standby supply current
(2)
leeS2
flows
in
addition
to
Icc.
When the
LCD-IV
is
installed
in
the user's system, and
in
operation current increases according
to
the external circuitry and
devices. Those are connected
to
the
LCD·
IV
.
User
should design the power supply
in
consideration of this point. (The
difference between the measured current
in
the above reset state and that measured
in
the operational state
in
the user's
system
is
the increased part of the supply current).
6.
Standby I/O leakage current
is
the leakage current of I/O pins
in
the "Halt" and "Disable" state.
7.
Current
that
flows
in
the input/output circuit and
in
the power supp,ly circuit for
LCD
is
excluded. The standby supply
current
(2)
is
the supply current at
Vee
= 2.5
to
3.3V
in
"Halt" state
in
the case that the crystal oscillation for timer
is
selected (only the crystal oscillator for timer, 5·bit divider and 6-bit prescaler are
in
operation).
182
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