Datasheet

MC9S12XE-Family Reference Manual Rev. 1.25
Freescale Semiconductor 241
Chapter 5
External Bus Interface (S12XEBIV4)
5.1 Introduction
This document describes the functionality of the XEBI block controlling the external bus interface.
The XEBI controls the functionality of a non-multiplexed external bus (a.k.a. ‘expansion bus’) in
relationship with the chip operation modes. Dependent on the mode, the external bus can be used for data
exchange with external memory, peripherals or PRU, and provide visibility to the internal bus externally
in combination with an emulator.
Table 5-1. Revision History
Revision
Number
Revision Date
Sections
Affected
Description of Changes
V04.01 12 Sep 2005 - Added CSx stretch description.
V04.02 23 May 2006 - Internal updates
V04.03 24 Jul 2006 - Removed term IVIS