MC9S12P128 Datasheet, PDF (94/564 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Port Integration Module (S12PPIMV1)
2.3.52 Port J Reduced Drive Register (RDRJ)
Address 0x026B
R
W
Reset
7
RDRJ7
0
1. Read: Anytime
Write: Anytime
6
5
4
3
2
0
0
0
RDRJ6
RDRJ2
0
0
0
0
0
Figure 2-50. Port J Reduced Drive Register (RDRJ)
Access: User read/write⁽¹⁾
1
0
RDRJ1
RDRJ0
0
0
Table 2-46. RDRJ Register Field Descriptions
Field
Description
7-6, 2-0
RDRJ
Port J 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
2.3.53 Port J Pull Device Enable Register (PERJ)
Address 0x026C
R
W
Reset
7
PERJ7
1
1. Read: Anytime
Write: Anytime
Access: User read/write⁽¹⁾
6
5
4
3
2
1
0
0
0
0
PERJ6
PERJ2
PERJ1
PERJ0
1
0
0
0
1
1
1
Figure 2-51. Port J Pull Device Enable Register (PERJ)
Table 2-47. PERJ Register Field Descriptions
Field
Description
7-6, 2-0
PERJ
Port J 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
94
Freescale Semiconductor