MC9S12P128 Datasheet, PDF (61/564 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Port Integration Module (S12PPIMV1)
Register
Name
Bit 7
6
5
4
3
2
1
Bit 0
0x027C R
0
0
0
0
0
0
0
0
Reserved _W
0x027D R
0
0
0
0
0
0
0
0
Reserved _W
0x027E R
0
0
0
0
0
0
0
0
Reserved _W
0x027F R
0
0
0
0
0
0
0
0
Reserved _W
= Unimplemented or Reserved
2.3.2 Register Descriptions
The following table summarizes the effect of the various configuration bits, i.e. data direction (DDR),
output level (IO), reduced drive (RDR), pull enable (PE), pull select (PS) on the pin function and pull
device activity.
The configuration bit PS is used for two purposes:
1. Configure the sensitive interrupt edge (rising or falling), if interrupt is enabled.
2. Select either a pull-up or pull-down device if PE is active.
S12P-Family Reference Manual, Rev. 1.12
Freescale Semiconductor
61