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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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