S3S12HZ256J3CAA FREESCALE [Freescale Semiconductor, Inc], S3S12HZ256J3CAA Datasheet - Page 151
S3S12HZ256J3CAA
Manufacturer Part Number
S3S12HZ256J3CAA
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.S3S12HZ256J3CAA.pdf
(692 pages)
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4.3.6.5
Read: Anytime. Write: Anytime.
This register configures whether a pull-up or a pull-down device is activated on configured input pins. If
a pin is configured as output, the corresponding Pull Device Enable Register bit has no effect.
4.3.6.6
Read: Anytime. Write: Anytime.
The Port T Polarity Select Register selects whether a pull-down or a pull-up device is connected to the pin.
The Port T Polarity Select Register is effective only when the corresponding Data Direction Register bit
is set to 0 (input) and the corresponding Pull Device Enable Register bit is set to 1.
Freescale Semiconductor
PERT[7:0]
PPST[7:0]
Reset
Reset
Field
Field
7:0
7:0
W
W
R
R
PERT7
PPST7
Pull Device Enable Port T
0 Pull-up or pull-down device is disabled.
1 Pull-up or pull-down device is enabled.
Pull Select Port T
0 A pull-up device is connected to the associated port T pin.
1 A pull-down device is connected to the associated port T pin.
Port T Pull Device Enable Register (PERT)
Port T Polarity Select Register (PPST)
1
1
7
7
PERT6
PPST6
Figure 4-41. Port T Pull Device Enable Register (PERT)
1
1
6
6
Figure 4-42. Port T Polarity Select Register (PPST)
Table 4-30. PERT Field Descriptions
Table 4-31. PPST Field Descriptions
PERT5
PPST5
MC9S12HZ256 Data Sheet, Rev. 2.04
1
1
5
5
PERT4
PPST4
1
1
4
4
Description
Description
PERT3
PPST3
1
1
3
3
Chapter 4 Port Integration Module (PIM9HZ256V2)
PERT2
PPST2
1
1
2
2
PERT1
PPST1
1
1
1
1
PERT0
PPST0
1
1
0
0
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