MC9S12P32CFT Datasheet, PDF (90/566 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Port Integration Module (S12PPIMV1)
2.3.44 Port P Pull Device Enable Register (PERP)
Address 0x025C
R
W
Reset
7
PPSP7
0
1. Read: Anytime
Write: Anytime
Access: User read/write⁽¹⁾
6
5
4
3
2
1
0
0
PPSP5
PPSP4
PPSP3
PPSP2
PPSP1
PPSP0
0
0
0
0
0
0
0
Figure 2-42. Port P Pull Device Enable Register (PERP)
Table 2-39. PERP Register Field Descriptions
Field
7,5-0
PERP
Description
Port P 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
2.3.45 Port P Polarity Select Register (PPSP)
Address 0x025D
R
W
Reset
7
PPSP7
0
1. Read: Anytime
Write: Anytime
6
5
4
3
2
0
PPSP5
PPSP4
PPSP3
PPSP2
0
0
0
0
0
Figure 2-43. Port P Polarity Select Register (PPSP)
Access: User read/write⁽¹⁾
1
0
PPSP1
PPSP0
0
0
Table 2-40. PPSP Register Field Descriptions
Field
Description
7,5-0
PPSP
Port P pull device select—Configure pull device and pin interrupt edge polarity on input pin
This bit selects a pull-up or a pull-down device if enabled on the associated port input pin.
This bit also selects the polarity of the active pin interrupt edge.
1 A pull-down device is selected; rising edge selected
0 A pull-up device is selected; falling edge selected
S12P-Family Reference Manual, Rev. 1.13
90
Freescale Semiconductor