mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 901

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

Chapter 23
DQ256 Port Integration Module (S12XDQ256PIMV2)
Introduction
The S12XD family port integration module (below referred to as PIM) establishes the interface between
the peripheral modules including the non-multiplexed external bus interface module (S12X_EBI) and the
I/O pins for all ports. It controls the electrical pin properties as well as the signal prioritization and
multiplexing on shared pins.
This document covers the description of:
Most I/O pins can be configured by register bits to select data direction and drive strength, to enable and
select pull-up or pull-down devices. Interrupts can be enabled on specific pins resulting in status flags.
The I/O’s of 2 MSCAN and 3 SPI modules can be routed from their default location to alternative port
pins.
23.0.1
A full-featured PIM module includes these distinctive registers:
Freescale Semiconductor
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Port A, B used as address output of the S12X_EBI and Port C, D used as data I/O of the S12X_EBI
Port E associated with the S12X_EBI control signals and the IRQ, XIRQ interrupt inputs
Port K associated with address output and control signals of the S12X_EBI
Port T connected to the Enhanced Capture Timer (ECT) module
Port S associated with 2 SCI and 1 SPI modules
Port M associated with 3 MSCAN modules
Port P connected to the PWM and 2 SPI modules — inputs can be used as an external interrupt
source
Port H associated with 1 SCI module — inputs can be used as an external interrupt source
Port J associated with 1 MSCAN, 1 SCI, and 1 IIC module — inputs can be used as an external
interrupt source
Port AD0 and AD1 associated with one 8-channel andone 16-channel ATD module
Data and data direction registers for Ports A, B, C, D, E, K, T, S, M, P, H, J, AD0, and AD1 when
used as general-purpose I/O
Features
The implementation of the PIM is device dependent. Therefore some
functions are not available on certain derivatives or 112-pin and 80-pin
package options.
MC9S12XDP512 Data Sheet, Rev. 2.17
NOTE
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