mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 964

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 23 DQ256 Port Integration Module (S12XDQ256PIMV2)
23.0.6.4
If the pin is used as an output this register allows the configuration of the drive strength.
23.0.6.5
This register turns on a pull-up or pull-down device. It becomes active only if the pin is used as an input
or as a wired-OR output.
23.0.6.6
This register selects either a pull-up or pull-down device if enabled. It becomes active only if the pin is
used as an input. A pull-up device can be activated if the pin is used as a wired-OR output. If the pin is
used as an interrupt input this register selects the active interrupt edge.
23.0.6.7
If the pin is used as an output this register turns off the active high drive. This allows wired-OR type
connections of outputs.
23.0.6.8
If the pin is used as an interrupt input this register serves as a mask to the interrupt flag to enable/disable
the interrupt.
23.0.6.9
If the pin is used as an interrupt input this register holds the interrupt flag after a valid pin event.
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Reduced Drive Register
Pull Device Enable Register
Polarity Select Register
Wired-OR Mode Register
Interrupt Enable Register
Interrupt Flag Register
Figure 23-76. Illustration of I/O Pin Functionality
Module
DDR
PTI
PT
MC9S12XDP512 Data Sheet, Rev. 2.17
module enable
data out
output enable
0
1
0
1
0
1
PIN
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