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113
V
CC
×
0.7
0.825 V
I/O port
(input)
V
CC
×
0.7
0.825 V
t
f
t
r
Figure 12.2 I/O Port Input Waveform (V
CC
= 4.5 V to 5.5 V)
t
RWL
t
RWL
t
on
t
off
t
RWL
0.66 V
0.66 V
0.8 V
0.66 V
0.66 V
0.5 V
4.5 V
V
CC
×
0.7
V
CC
CLK
RES
Note: The level of V
CC
, CLK, and
RES
should be low (GND level) at power-on and after power-off.
Figure 12.3 Power On/Off and
RES
Input Timing (V
CC
= 4.5 V to 5.5 V)
t
CLKH
0.825 V
t
CLKS
0.825 V
CLK
I/O-1/
IRQ
or
I/O-2/
IRQ
V
CC
×
0.7
Program
execution state
SLEEP Instruction
IRQ
t
IRQW
Power-down state
(Sleep mode)
Interrupt exception-
handling state
Figure 12.4 Interrupt Timing in Sleep Mode (V
CC
= 4.5 V to 5.5 V)