CSM9S12XDT512SLK Freescale Semiconductor, CSM9S12XDT512SLK Datasheet - Page 943
CSM9S12XDT512SLK
Manufacturer Part Number
CSM9S12XDT512SLK
Description
KIT STUDENT LEARNING 16BIT
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S12XD64CAA.pdf
(1348 pages)
Specifications of CSM9S12XDT512SLK
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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RDRP[7:0]
PERP[7:0]
Reset
Reset
Field
23.0.5.42 Port P Pull Device Enable Register (PERP)
Read: Anytime.
Write: Anytime.
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.
Field
23.0.5.43 Port P Polarity Select Register (PPSP)
Read: Anytime.
Write: Anytime.
This register serves a dual purpose by selecting the polarity of the active interrupt edge as well as
selecting a pull-up or pull-down device if enabled.
7–0
7–0
W
W
R
R
PERP7
PPSP7
Reduced Drive Port P
0 Full drive strength at output.
1 Associated pin drives at about 1/6 of the full drive strength.
Pull Device Enable Port P
0 Pull-up or pull-down device is disabled.
1 Either a pull-up or pull-down device is enabled.
7
0
7
0
PERP6
PPSP6
Figure 23-44. Port P Pull Device Enable Register (PERP)
0
0
6
6
Figure 23-45. Port P Polarity Select Register (PPSP)
Table 23-40. RDRP Field Descriptions
Table 23-41. PERP Field Descriptions
PERP5
PPSP5
5
0
5
0
PERP4
PPSP4
0
0
4
4
Description
Description
PERP3
PPSP3
3
0
3
0
PERP2
PPSP2
0
0
2
2
PERP1
PPSP1
1
0
1
0
PERP0
PPSP0
0
0
0
0
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