mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 951

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

PIEH[7:0]
PIFH[7:0]
Reset
Field
23.0.5.53 Port H Interrupt Flag Register (PIFH)
Read: Anytime.
Write: Anytime.
Each flag is set by an active edge on the associated input pin. This could be a rising or a falling
edge based on the state of the PPSH register. To clear this flag, write logic level “1” to the
corresponding bit in the PIFH register. Writing a “0” has no effect.
Field
7–0
7–0
W
R
PIFH7
Interrupt Enable Port H
0 Interrupt is disabled (interrupt flag masked).
1 Interrupt is enabled.
Interrupt Flags Port H
0 No active edge pending. Writing a “0” has no effect.
1 Active edge on the associated bit has occurred (an interrupt will occur if the associated enable bit is set).
7
0
Writing a logic level “1” clears the associated flag.
PIFH6
0
6
Figure 23-55. Port H Interrupt Flag Register (PIFH)
Table 23-49. PIEH Field Descriptions
Table 23-50. PIFH Field Descriptions
PIFH5
5
0
PIFH4
0
4
Description
Description
PIFH3
3
0
PIFH2
0
2
PIFH1
1
0
PIFH0
0
0