Datasheet

MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor 975
Chapter 24
DG128 Port Integration Module (S12XDG128PIMV2)
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:
• Port A, B
• Port E associated with the IRQ, XIRQ interrupt inputs
• Port K
• Port T connected to the Enhanced Capture Timer (ECT) module
• Port S associated with 2 SCI and 1 SPI modules
• Port M associated with 2 MSCAN modules and 1 SCI module
• Port P connected to the PWM and 1 SPI module — inputs can be used as an external interrupt
source
• Port H associated with 2 SCI modules — 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 AD1 associated with one 16-channel ATD module
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 2 SPI modules can be routed from their default location to alternative port
pins.
NOTE
The implementation of the PIM is device dependent. Therefore some
functions are not available on certain derivatives or80-pin package options.
24.0.1 Features
A full-featured PIM module includes these distinctive registers: