Abov MC97F6108A - Page 43

MC97F6108A User’s manual 5. I/O ports
43
P1DB (P1 De-bounce Enable Register): 2F0AH
7
6
5
4
3
2
1
0
P17DB
P16DB
P15DB
P14DB
P13DB
P12DB
P11DB
P10DB
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P1DB[7:0]
Configure De-bounce of P1 Port
0
Disable
1
Enable
NOTES:
1. If the same level is not detected on enabled pin three or four times in a row at
the sampling clock, the signal is eliminated as noise.
2. A pulse level should be input for the duration of 3 clock or more to be actually
detected as a valid edge.
3. The port de-bounce is automatically disabled at stop mode and recovered after
stop mode release.
4. Refer to Port De-bounce Selection Register (PSR0) for the de-bounce time.