Appendix D Pin States
D.1 Port States in Each Mode
Table D-1 Port States
Hardware Software Bus-
Program
Pin Standby
Standby
Released
Execution,
Name
Mode
Reset
Mode
Mode
Mode
Sleep Mode
ø
—
Clock output T
H
Clock output Clock output
RESO
—
T
*
T
T
T
RESO
P1
7
to P1
0
1 to 4
L
T
T
T
A
7
to A
0
5, 6
T
T
keep
T
Input port
(DDR = 0)
T
T
A
7
to A
0
(DDR = 1)
7
T
T
keep
—
I/O port
P2
7
to P2
0
1 to 4
L
T
T
T
A
15
to A
8
5, 6
T
T
keep
T
Input port
(DDR = 0)
T
T
A
15
to A
8
(DDR = 1)
7
T
T
keep
—
I/O port
P3
7
to P3
0
1 to 6
T
T
T
T
D
15
to D
8
7
T
T
keep
—
I/O port
P4
7
to P4
0
1 to 6 8-bit bus
T
T
keep
keep
I/O port
16-bit bus
T
T
T
T
D
7
to D
0
7
T
T
keep
—
I/O port
Legend
H:
High
L:
Low
T:
High-impedance state
keep: Input pins are in the high-impedance state; output pins maintain their previous state.
DDR: Data direction register bit
Note:
*
Low output only when WDT overflow causes a reset.
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