MC9S12T64 Datasheet, PDF (266/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
Port Integration Module (PIM)
Port P Reduced
Drive Register (RDRP)
Address Offset: $00F3
Bit 7
Read:
RDRP7
Write:
Reset: 0
6
5
4
RDRP6 RDRP5 RDRP4
0
0
0
= Reserved or unimplemented
3
RDRP3
0
2
RDRP2
0
1
RDRP1
0
Bit 0
RDRP0
0
Read: Anytime.
Write: Anytime.
This register configures the drive strength of each port P output pin as
either full or reduced. If the port is used as input this bit is ignored.
RDRP[7:0] — Reduced Drive Port P
1 = Associated pin drives at about 1/3 of the full drive strength.
0 = Full drive strength at output.
Port P Pull Device
Enable Register
(PERP)
Address Offset: $00F4
Bit 7
Read:
PERP7
Write:
Reset: 0
6
5
4
PERP6 PERP5 PERP4
0
0
0
= Reserved or unimplemented
3
PERP3
0
2
PERP2
0
1
PERP1
0
Bit 0
PERP0
0
Read: Anytime.
Write: Anytime.
This register configures whether a pull-up or a pull-down device is
activated, if the port is used as input. This bit has no effect if the port is
used as output. Out of reset no pull device is enabled.
PERP[7:0] — Pull Device Enable Port P
1 = Either a pull-up or pull-down device is enabled.
0 = Pull-up or pull-down device is disabled.
MC9S12T64Revision 1.1.1
Port Integration Module (PIM)
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