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NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 1239 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
[4]
ODEN
Open Drain Enable
If there are more than one key are pressed in the same column, then “short-circuit” will appear
between active and inactive scan row. Software can set this bit HIGH to enable scan output
KROW (KPICONF[29:28])
pins work as “open-drain” to avoid the “short-circuit”.
0 = Push-Pull drive.
1 = Open drain.
[3]
INTEN
Key Interrupt Enable Control
0 = Disable the keypad interrupt.
1 = Enable the keypad interrupt.
[2]
RKINTEN
Release Key Interrupt Enable Control
The keypad controller will generate an interrupt when the controller detects keypad status
changes from press to release.
0 = Disable the keypad release interrupt.
1 = Enable the keypad release interrupt.
[1]
PKINTEN
Press Key Interrupt Enable Control
The keypad controller will generate an interrupt when the controller detects any effective key
press
0 = Disable the keypad press interrupt.
1 = Enable the keypad press interrupt.
[0]
ENKP
Keypad Scan Enable
Setting this bit high enable the key scan function.
0 = Disable keypad scan.
1 = Enable keypad scan.