MC9S12XDP512CFU
| Model | MC9S12XDP512CFU |
| Description | 16-BIT, FLASH, 40MHz, MICROCONTROLLER, PQFP80 |
| PDF file | Total 1348 pages (File size: 8M) |
| Chip Manufacturer | PHILIPS |
Chapter 23 DQ256 Port Integration Module (S12XDQ256PIMV2)
Table 23-47. PERH Field Descriptions
Field
7–0
PERH[7:0]
Description
Pull Device Enable Port H
0 Pull-up or pull-down device is disabled.
1 Either a pull-up or pull-down device is enabled.
23.0.5.51 Port H Polarity Select Register (PPSH)
7
6
5
4
3
2
1
0
R
PPSH7
W
Reset
0
0
0
0
0
0
0
0
PPSH6
PPSH5
PPSH4
PPSH3
PPSH2
PPSH1
PPSH0
Figure 23-53. Port H Polarity Select Register (PPSH)
Read: Anytime.
Write: Anytime.
This register serves a dual purpose by selecting the polarity of the active interrupt edge as well as selecting
a pull-up or pull-down device if enabled.
Table 23-48. PPSH Field Descriptions
Field
7–0
PPSH[7:0]
Description
Polarity Select Port H
0 Falling edge on the associated port H pin sets the associated flag bit in the PIFH register.
A pull-up device is connected to the associated port H pin, if enabled by the associated bit in register PERH
and if the port is used as input.
1 Rising edge on the associated port H pin sets the associated flag bit in the PIFH register.
A pull-down device is connected to the associated port H pin, if enabled by the associated bit in register PERH
and if the port is used as input.
23.0.5.52 Port H Interrupt Enable Register (PIEH)
7
6
5
4
3
2
1
0
R
PIEH7
W
Reset
0
0
0
0
0
0
0
0
PIEH6
PIEH5
PIEH4
PIEH3
PIEH2
PIEH1
PIEH0
Figure 23-54. Port H Interrupt Enable Register (PIEH)
Read: Anytime.
Write: Anytime.
This register disables or enables on a per-pin basis the edge sensitive external interrupt associated with
Port H.
MC9S12XDP512 Data Sheet, Rev. 2.21
950
Freescale Semiconductor
