363
Table 15.2
DC Characteristics (cont)
V
CC
= 1.8 V to 5.5 V, AV
CC
= 1.8 V to 5.5 V, V
SS
= AV
SS
= 0.0 V, T
a
= –20
°
C to +75
°
C
(including subactive mode) unless otherwise indicated.
Values
Item
Symbol Applicable Pins Min
Typ
Max
Unit Test Condition
Notes
Watch
mode
current
dissipation
I
WATCH
V
CC
—
2.8
6
µ
A
V
CC
= 2.7 V 3
2-kHz crystal
oscillator
LCD not used
*
3
*
4
*
5
Standby
mode
current
dissipation
I
STBY
V
CC
—
1.0
5.0
µ
A
32-kHz crystal
oscillator not used
*
3
*
4
RAM data
retaining
voltage
V
RAM
V
CC
1.5
—
—
V
*
3
*
4
Notes: 1. Applies to the Mask ROM products.
2. Applies to the HD6473827R.
3. Pin states during current measurement.
Mode
RES
Pin
Internal State
Other
Pins
LCD Power
Supply
Oscillator Pins
Active (high-speed)
mode (I
OPE1
)
V
CC
Operates
V
CC
Halted
System clock oscillator:
crystal
Active (medium-
speed) mode (I
OPE2
)
Subclock oscillator:
Pin X
1
= GND
Sleep mode
V
CC
Only timers operate
V
CC
Halted
Subactive mode
V
CC
Operates
V
CC
Halted
System clock oscillator:
Subsleep mode
V
CC
Only timers operate,
CPU stops
V
CC
Halted
crystal
Subclock oscillator:
Watch mode
V
CC
Only time base
operates, CPU stops
V
CC
Halted
crystal
Standby mode
V
CC
CPU and timers both
stop
V
CC
Halted
System clock oscillator:
crystal
Subclock oscillator:
Pin X
1
= GND
4. Excludes current in pull-up MOS transistors and output buffers.
5. When internal step-down circuit is used.