|
MC9S12P128_10 Datasheet, PDF (61/566 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 conï¬guration 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 conï¬guration bit PS is used for two purposes:
1. Conï¬gure 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. 1.13
Freescale Semiconductor
61
|
▷ |