mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 946

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

Chapter 23 DQ256 Port Integration Module (S12XDQ256PIMV2)
23.0.5.44 Port P Interrupt Enable Register (PIEP)
Read: Anytime.
Write: Anytime.
This register disables or enables on a per-pin basis the edge sensitive external interrupt associated with
Port P.
23.0.5.45 Port P Interrupt Flag Register (PIFP)
Read: Anytime.
Write: Anytime.
946
PPSP[7:0]
PIEP[7:0]
Reset
Reset
Field
Field
7–0
7–0
W
W
R
R
PIEP7
PIFP7
Polarity Select Port P
0 Falling edge on the associated port P pin sets the associated flag bit in the PIFP register.A pull-up device is
1 Rising edge on the associated port P pin sets the associated flag bit in the PIFP register.A pull-down device
Interrupt Enable Port P
0 Interrupt is disabled (interrupt flag masked).
1 Interrupt is enabled.
0
0
7
7
connected to the associated port P pin, if enabled by the associated bit in register PERP and if the port is used
as input.
is connected to the associated port P pin, if enabled by the associated bit in register PERP and if the port is
used as input.
PIEP6
PIFP6
0
0
6
6
Figure 23-46. Port P Interrupt Enable Register (PIEP)
Figure 23-47. Port P Interrupt Flag Register (PIFP)
Table 23-42. PPSP Field Descriptions
Table 23-43. PIEP Field Descriptions
MC9S12XDP512 Data Sheet, Rev. 2.17
PIEP5
PIFP5
0
0
5
5
PIEP4
PIFP4
0
0
4
4
Description
Description
PIEP3
PIFP3
0
0
3
3
PIEP2
PIFP2
0
0
2
2
Freescale Semiconductor
PIEP1
PIFP1
0
0
1
1
PIEP0
PIFP0
0
0
0
0