sc9s12hy64j0vllr Freescale Semiconductor, Inc, sc9s12hy64j0vllr Datasheet - Page 89

• Manufacturer Part Number: sc9s12hy64j0vllr
• Description: S12 Microcontrollers Mcu 16-bit Hcs12 Cisc 32kb Flash 5v Tray
• Manufacturer: Freescale Semiconductor, Inc

1
1
2.3.26
2.3.27
Freescale Semiconductor
Address 0x024C
Address 0x024D
Read: Anytime.
Write: Anytime.
Read: Anytime.
Write: Anytime.
RDRS
PERS
Field
Field
Reset
Reset
7-0
7-0
W
W
R
R
Port S reduced drive—Select reduced drive for outputs
This register configures the drive strength of output pins 7 through 0 as either full or reduced. If a pin is used as input
this bit has no effect.
1 Reduced drive selected (1/6 of the full drive strength).
0 Full drive strength enabled.
Port S pull device enable—Enable pull devices on input pins
These bits configure whether a pull device is activated, if the associated pin is used as an input. This bit has no effect
if the pin is used as an output. Out of reset all pull devices are enabled.
1 Pull device enabled.
0 Pull device disabled.
PERS7
PPSS7
Port S Pull Device Enable Register (PERS)
Port S Polarity Select Register (PPSS)
1
0
7
7
PERS6
PPSS6
Figure 2-24. Port S Pull Device Enable Register (PERS)
1
0
6
6
Figure 2-25. Port S Polarity Select Register (PPSS)
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Table 2-22. RDRS Register Field Descriptions
Table 2-23. PERS Register Field Descriptions
PERS5
PPSS5
1
0
5
5
PERS4
PPSS4
1
0
4
4
Description
Description
PERS3
PPSS3
3
1
3
0
PERS2
PPSS2
Port Integration Module (S12HYPIMV1)
1
0
2
2
PERS1
PPSS1
Access: User read/write
Access: User read/write
1
0
1
1
PERS0
PPSS0
1
0
0
0
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1