Datasheet

Chapter 2 Port Integration Module (PIM9C32) Block Description
Freescale Semiconductor MC9S12C-Family / MC9S12GC-Family 83
Rev 01.24
2.3.2.1.4 Port T Reduced Drive Register (RDRT)
Read: Anytime.
Write: Anytime.
2.3.2.1.5 Port T Pull Device Enable Register (PERT)
Read: Anytime.
Write: Anytime.
Module Base + 0x0003
76543210
R
RDRT7 RDRT6 RDRT5 RDRT4 RDRT3 RDRT2 RDRT1 RDRT0
W
Reset 0 0 0 00000
Figure 2-6. Port T Reduced Drive Register (RDRT)
Table 2-6. RDRT Field Descriptions
Field Description
7–0
RDRT[7:0]
Reduced Drive Port T — This register configures the drive strength of each port T output pin as either full or
reduced. If the port is used as input this bit is ignored.
0 Full drive strength at output.
1 Associated pin drives at about 1/3 of the full drive strength.
Module Base + 0x0004
76543210
R
PERT7 PERT6 PERT5 PERT4 PERT3 PERT2 PERT1 PERT0
W
Reset 0 0 0 00000
Figure 2-7. Port T Pull Device Enable Register (PERT)
Table 2-7. PERT Field Descriptions
Field Description
7–0
PERT[7:0]
Pull Device Enable — 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.
0 Pull-up or pull-down device is disabled.
1 Either a pull-up or pull-down device is enabled.