MC9S12P128 Datasheet, PDF (99/564 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

2.3.62
Port AD Reduced Drive Register (RDR1AD)
Port Integration Module (S12PPIMV1)
Address 0x0275
7
R
RDR1AD7
W
Reset
0
1. Read: Anytime
Write: Anytime
6
5
4
3
2
RDR1AD6 RDR1AD5 RDR1AD4 RDR1AD3 RDR1AD2
0
0
0
0
0
Figure 2-60. Port AD Reduced Drive Register (RDR1AD)
Access: User read/write⁽¹⁾
1
0
RDR1AD1 RDR1AD0
0
0
Table 2-56. RDR1AD Register Field Descriptions
Field
Description
7-0 Port AD reduced drive—Select reduced drive for output pin
RDR1AD 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
2.3.63 Port AD Pull Up Enable Register (PER0AD)
Address 0x0276
7
R
0
W
Reset
0
1. Read: Anytime
Write: Anytime
Access: User read/write⁽¹⁾
6
5
4
3
2
1
0
0
0
0
0
0
PER0AD1 PER0AD0
0
0
0
0
0
0
0
Figure 2-61. Port AD Pull Up Enable Register (PER0AD)
Table 2-57. PER0AD Register Field Descriptions
Field
Description
1-0 Port AD pull-up enable—Enable pull-up device on input pin
PER0AD 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.
1 Pull device enabled
0 Pull device disabled
S12P-Family Reference Manual, Rev. 1.12
Freescale Semiconductor
99