MC9S12P128 Datasheet, PDF (74/564 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Port Integration Module (S12PPIMV1)
2.3.19 Port T Reduced Drive Register (RDRT)
Address 0x0243
R
W
Reset
7
RDRT7
0
1. Read: Anytime
Write: Anytime
6
RDRT6
5
RDRT5
4
RDRT4
3
RDRT3
2
RDRT2
0
0
0
0
0
Figure 2-17. Port T Reduced Drive Register (RDRT)
Access: User read/write⁽¹⁾
1
0
RDRT1
RDRT0
0
0
Table 2-17. RDRT Register Field Descriptions
Field
7-0
RDRT
Description
Port T reduced drive—Select reduced drive for output pin
This bit configures the drive strength of the associated output pin as either full or reduced. If a pin is used as input
this bit has no effect. The reduced drive function is independent of which function is being used on a particular pin.
1 Reduced drive selected (approx. 1/5 of the full drive strength)
0 Full drive strength enabled
2.3.20 Port T Pull Device Enable Register (PERT)
Address 0x0244
R
W
Reset
7
PERT7
0
1. Read: Anytime
Write: Anytime
6
PERT6
5
PERT5
4
PERT4
3
PERT3
2
PERT2
Access: User read/write⁽¹⁾
1
0
PERT1
PERT0
0
0
0
0
0
0
0
Figure 2-18. Port T Pull Device Enable Register (PERT)
Table 2-18. PERT Register Field Descriptions
Field
Description
7-0
PERT
Port T pull device enable—Enable pull device on input pin
This bit controls whether a pull device on the associated port input pin is active. If a pin is used as output this bit has
no effect. The polarity is selected by the related polarity select register bit.
1 Pull device enabled
0 Pull device disabled
S12P-Family Reference Manual, Rev. 1.12
74
Freescale Semiconductor