Datasheet

MC9S12XE-Family Reference Manual Rev. 1.25
Freescale Semiconductor 89
Chapter 2
Port Integration Module (S12XEPIMV1)
2.1 Introduction
2.1.1 Overview
The S12XE Family Port Integration Module 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:
• Port A and B used as address output of the S12X_EBI
• Port C and 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 associated with 1 ECT module
• Port S associated with 2 SCI and 1 SPI modules
• Port M associated with 4 MSCAN and 1 SCI module
• Port P connected to the PWM and 2 SPI modules - inputs can be used as an external interrupt source
• Port H associated with 4 SCI modules - inputs can be used as an external interrupt source
• Port J associated with 1 MSCAN, 1 SCI, 2 IIC modules and chip select outputs - inputs can be used
as an external interrupt source
• Port AD0 and AD1 associated with two 16-channel ATD modules
• Port R associated with 1 standard timer (TIM) module
• Port L associated with 4 SCI modules
Table 2-1. Revision History
Revision
Number
Revision Date
Sections
Affected
Description of Changes
V01.17 02 Apr 2008 • Corrected reduced drive strength to 1/5
• Separated PE1,0 bit descriptions from other PE GPIO
V01.18 25 Nov 2008 2.3.19/120
2.4.3.4/181
• Corrected alternative functions on Port K (ACC[2:0])
• Corrected functions on PE[5] (MODB) and PE[2] (WE)
V01.19 18 Dec 2009 • Added function independency to reduced drive and wired-or bit
descriptions
• Minor corrections