Philips P89LPC907 用户手册
Philips Semiconductors
User’s Manual - Preliminary -
P89LPC906/907/908
KEYPAD INTERRUPT (KBI)
78
Figure 11-3: Keypad Interrupt Mask Register (KBM)
KBMASK
Address: 86h
Address: 86h
Not bit addressable
Reset Source(s): Any reset
Reset Value: 00000000B
BIT
Reset Source(s): Any reset
Reset Value: 00000000B
BIT
SYMBOL
FUNCTION
KBMASK.7
-
Reserved.
KBMASK.6
-
When set, enables P0.6 as a cause of a Keypad Interrupt.
KBMASK.5
-
When set, enables P0.5 as a cause of a Keypad Interrupt.
KBMASK.4
-
When set, enables P0.4 as a cause of a Keypad Interrupt.
KBMASK.3:0
-
Reserved.
Note: the Keypad Interrupt must be enabled in order for the settings of the KBMASK register to be effective.
Bits positions KBMASK.7, KBMASK.3, KBMASK.2, KBMASK.1, and KBMASK.0 should always be written as a ’0’.
7
6
5
4
3
2
1
0
-
KBMASK.6 KBMASK.5 KBMASK.4
-
-
-
-