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118
I/O port (input)
t
f
t
r
V
CC
×
0.7
V
CC
×
0.7
V
CC
×
0.2
V
CC
×
0.2
Figure 12.6 I/O Port Input Waveform (V
CC
= 2.7 V to 3.3 V)
t
RWL
t
RWL
t
on
t
off
t
RWL
0.8 V
2.7 V
V
CC
×
0.7
V
CC
CLK
RES
V
CC
×
0.2
V
CC
×
0.2
V
CC
×
0.2
V
CC
×
0.2
V
CC
×
0.2
Note: The level of V
CC
, CLK, and
RES
should be low (GND level) at power-on and after power-off.
Figure 12.7 Power On/Off and
RES
Input Timing (V
CC
= 2.7 V to 3.3 V)
t
CLKH
t
CLKS
CLK
I/O-1/
IRQ
or
I/O-2/
IRQ
Program
execution state
SLEEP Instruction
IRQ
t
IRQW
Power-down state
(sleep mode)
Interrupt exception-
handling state
V
CC
×
0.2
V
CC
×
0.2
V
CC
×
0.7
Figure 12.8 Interrupt Timing in Sleep Mode (V
CC
= 2.7 V to 3.3 V)