LCO-IV--------------------------------------------------------------------
•
ELECTRICAL
CHARACTERISTICS
- 2 (Ta =
-20
to
+75°C)
Value
Unit
Note
Item
Symbol
Test
Conditions
min.
max.
Halt
Duration
Voltage
VDH
HLT
=
0.2V
2.3
-
V
(17)
Halt
Current
IDH
Vin
=
Vcc,
HLT
=
0.2V,
-
4.0
p.A
(17),
VDH =
2.3V
(19)
Halt
Delay
Time
tHD
100
-
p.s
(17)
Operation
Recovery
Time
tRC
100
-
p.s
(17)
HL T Fall
Time
tfHLT
-
1000
p.s
(17)
H L T Rise
Time
trHLT
-
1000
p.s
(17)
HL T
"Low"
Hold
Time
tHLT
400
-
p.s
(17)
Rt
Oscillation,
External
100
-
H L T
"High"
Hold
Time
tOPR
Clock
Operation
p.s
(17)
Ceramic
Filter
Oscillation
4000
-
Rt
Oscillation,
External
5
-
RESET
Pulse
Width
(1)
tRST1
Clock
Operation
ms
(18)
Ceramic
Filter
Oscillation
20
-
Prescaler
Clock
2·Tinst
=
System
Clock
External
Not
clear
Reset,
Prescaler
Prescaler
2·Tinst
-
p.s
(18)
RESET
Pulse
Width
(2)
tRST2
HL
T=Vcc
clock=Dlsl
with
Reset
VCC
=
4.5
XI
clock
signal
to
5.5V
(32 x 10
6
1
Clear
foscx)
Prescaler
32
x 10
6
1
-
with
Reset
f
oscx
signal
RESET
Rise
Time
trRST
External
Reset,
HL
T =
Vcc,
-
100
p.s
(18)
Vcc
=
4.5
to
5.5V
--
-----
RESET
Fall
Time
tfRST
External
Reset,
HL
T =
Vcc,
-
100
p.s
Vcc
=
4.5
to
5.5V
(NOTE) 1. Applied to
PMOS
load of
CMOS
output
pins and
CMOS
I/O common pins among D 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 D and R terminals.
3.
Applied
to
open-drain
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
the input/output circuit and
in
the power supply circuit for
LCD·is
exclud~d).
Test Condition: RESET, HLT, TEST =
Vee
(Reset State)
INTo, INT.
,Roo
to
R
33
, D.
to
DI3
=
VCC
D
••
/XO,
D.s/XI-cD
••
/XO, D.s/XI =
Vee
(Crystal oscillation for timer
is
not selected).
V.,
V.,
V3
=
Vee
D •• /XO = Open, DIS/XI =
Vee
(Crystal oscillation for timer
is
selected).
COM,
to
COM., SEG.
to
SEG
3
•
= Open
When
the crystal oscillation for timer operates, the standby supply current
(2)
leeS2
flows
in
addition
to
Icel
or
Ice2.
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.
(18)
7.
Current
that
flows
in
the input/output circuit and
in
the power supply circuit for
LCD
is
excluded. The standby supply
current (2)
is
the supply current
at
Vee
=
5V
±
10%
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).
178
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