MC9S12Q FREESCALE [Freescale Semiconductor, Inc], MC9S12Q Datasheet - Page 82

• Manufacturer Part Number: MC9S12Q
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Chapter 2 Port Integration Module (PIM9C32) Block Description
2.3.2.1.4
Read: Anytime.
Write: Anytime.
2.3.2.1.5
Read: Anytime.
Write: Anytime.
82
Module Base + 0x0003
Module Base + 0x0004
RDRT[7:0]
PERT[7:0]
Reset
Reset
Field
Field
7–0
7–0
W
W
R
R
RDRT7
PERT7
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.
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.
0
0
7
7
Port T Reduced Drive Register (RDRT)
Port T Pull Device Enable Register (PERT)
RDRT6
PERT6
0
0
6
6
Figure 2-7. Port T Pull Device Enable Register (PERT)
Figure 2-6. Port T Reduced Drive Register (RDRT)
Table 2-6. RDRT Field Descriptions
Table 2-7. PERT Field Descriptions
RDRT5
PERT5
0
0
5
5
MC9S12Q128
RDRT4
PERT4
Rev 1.09
0
0
4
4
Description
Description
RDRT3
PERT3
0
0
3
3
RDRT2
PERT2
0
0
2
2
RDRT1
PERT1
Freescale Semiconductor
0
0
1
1
RDRT0
PERT0
0
0
0
0