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HCS12

更新时间： 2024-01-31 19:08:59

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摩托罗拉 - MOTOROLA		/
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HCS12 Document Methodology

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HCS12 数据手册

Freescale Semiconductor, Inc.

7/9/2003

V0.2

HCS12 Document Methodology

Document Types

The HCS12 Family document set is designed to give the customer the most up-to-date,

comprehensive information in an efficient manner. The device documentation is broken down

into two types:

•

Device Guides — Listed under the data sheet category. These provide device-specific

information, such as which modules are incorporated in a device and how those modules

interact. There is a document reference table near the beginning of each device guide. It

indicates which version of each block guide should be consulted for all modules on chip.

Examples of information contained in the device guides are:

— Module list (reference to applicable block guides)

— Pin assignments

— Top-level block diagram

— Top-level memory map

— Interrupt vectors

— Electrical specifications

— Package mechanical information

•

Block Guides — Listed under the reference manual category. These provide detailed module-

specific information. They contain:

— Module register map

— Module functional description

The document set for each device may be downloaded individually or as a collection contained in

a single zip file.

Revision Numbering

Understanding the way the HCS12 Family documents are versioned is vital to understanding

organization of the literature. There are two revision levels on each document:

•

Major — V04.11 (The four in this example is the major revision number.) When a document

is changed to reflect a functional change in the way a device operates, from one version of

silicon to another or from one version of a module to another, the functional change will be

described in a document that increments the major revision number. This major version

number is included in the order number of the document, for example S12CRGV4/D, where

S12CRGV3/D documents an earlier version of the CRG module still included on some

devices. The specification for the CRG module changed between V3 and V4 of the block

guide.

•

Minor — V04.11 (The eleven in this example is the minor revision number.) Minor revisions

indicate that typos were fixed, or other minor corrections were made to the document. Minor

revisions do not indicate a functional change.

On the Web display, the document number will show as S12CRGV4/D, Rev. 11, because V4.11 is

the eleventh revision of major version 4 of the document.

When consulting documentation for the HCS12 Family devices, be aware that the date on the

cover of the document indicates the date the document was released to publication. The date

displayed on the Web is the day the document appeared on the Web. The two dates may not

match. The important thing to look at is the major.minor revision number, and not the date.

Detailed revision history tables within each of the documents describe what changes were made,

and when.

For More Information On This Product,

Go to: www.freescale.com

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