
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
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 congures 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
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 congures 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.