PXS20RM Datasheet, PDF (35/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

Preface
Overview
The primary objective of this document is to define the functionality of the PXS20 microcontroller for use
by software and hardware developers.
The information in this book is subject to change without notice, as described in the disclaimers on the title
page. As with any technical documentation, it is the reader’s responsibility to be sure he or she is using the
most recent version of the documentation.
To locate any published errata or updates for this document, visit the Freescale Web site at
http://www.freescale.com/.
Audience
This manual is intended for system software and hardware developers and applications programmers who
want to develop products with the PXS20 device. It is assumed that the reader understands operating
systems, microprocessor system design, basic principles of software and hardware, and basic details of the
Power Architecture.
Organization
This document includes chapters that describe:
• The microcontroller as a whole
• The functionality of the individual modules on the microcontroller
When the microcontroller is specified as “PXS20,” the reader is instructed to apply this information to all
of the microcontrollers specified on the front cover of this manual, unless individual device-specific details
are provided in that chapter.
The following summary provides a brief description of the major sections of this manual:
• Chapter 1, Introduction, includes general descriptions of the modules and features incorporated in
the device while focusing on new features.
• Chapter 2, Memory Map, provides a high-level listing of the PXS20 memory map.
• Chapter 3, Signal Description, summarizes the external signal functions, their static electrical
characteristics, and pad configuration settings for the PXS20.
• Chapter 4, Operating Modes, describes the operating modes for the PXS20.
• Chapter 5, Device Boot Modes, describes the boot modes for the PXS20.
• Chapter 6, Device Security, describes the censorship mechanism implemented on the PXS20.
• Chapter 7, Functional Safety, describes a set of features to support using the PXS20 for
applications that need to fulfill functional safety requirements.
Freescale Semiconductor
PXS20 Microcontroller Reference Manual, Rev. 1
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