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1、UL 1998 ISBN 0-7629-0321-X Software in Programmable Components Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/20/2006 02:59:34 MDTNo reproduction or networking permitted without license from IHS -,-
2、,- Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/20/2006 02:59:34 MDTNo reproduction or networking permitted without license from IHS -,-,- Underwriters Laboratories Inc. (UL) 333 Pfi ngsten Road N
3、orthbrook, IL 60062-2096 UL Standard for Safety for Software in Programmable Components, UL 1998 Second Edition, Dated May 29, 1998 The revisions dated May 4, 2004 include a reprinted title page (page1) for this Standard. Summary of Topics This revision to ANSI/UL 1998 is issued to update the Title
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7、anged requirement becomes effective. The revisions dated May 4, 2004 include a reprinted title page (page1) for this Standard. As indicated on the title page (page 1), this UL Standard for Safety is an American National Standard. Attention is directed to the note on the title page of this Standard o
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28、 be signifi ed in writing. Copyright 2004 Underwriters Laboratories Inc. This Standard consists of pages dated as shown in the following checklist: PageDate 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29、. . . . . . . . . May 4, 2004 5-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . May 2, 2000 A1-A12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . May 2, 2000 MAY 4, 2004 UL 1998tr3 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/20/2006 02:59:34 MDTNo reproduction or networking permitt
31、ed without license from IHS -,-,- MAY 4, 2004 UL 1998tr4 No Text on This Page Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/20/2006 02:59:34 MDTNo reproduction or networking permitted without licen
32、se from IHS -,-,- MAY 29, 1998 (Title Page Reprinted: May 4, 2004) 1 UL 1998 Standard for Software in Programmable Components First Edition January, 1994 Second Edition May 29, 1998 The most recent designation of ANSI/UL 1998 as an American National Standard (ANSI) occurred on April 28, 2004. This A
33、NSI/UL Standard for Safety, which consists of the Second edition with revisions through May 4, 2004 is under continuous maintenance, whereby each revision is ANSI approved upon publication. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Written co
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35、 by issuing revised or additional pages bearing their date of issue. A UL Standard is current only if it incorporates the most recently adopted revisions, all of which are itemized on the transmittal notice that accompanies the latest set of revised requirements. ISBN 0-7629-0321-X COPYRIGHT 1994, 2
36、004 UNDERWRITERS LABORATORIES INC. ANSI/UL 1998-2004 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/20/2006 02:59:34 MDTNo reproduction or networking permitted without license from IHS -,-,- MAY 4,
37、2004SOFTWARE IN PROGRAMMABLE COMPONENTS - UL 19982 No Text on This Page Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/20/2006 02:59:34 MDTNo reproduction or networking permitted without license fro
38、m IHS -,-,- CONTENTS PREFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
39、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2 Defi nitions of Terms Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 3 Risk Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 4 Process Defi nition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 5 Qualifi cation of Design, Implementation, and Verifi cation T
41、ools . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 6 Software Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 7 Critical and Supervisory Sections of Software . . . . . . . . . . . . . . . .
42、 . . . . . . . . . . . . . . . . . . . . . . . . . . .12 8 Measures To Address Microelectronic Hardware Failure Modes . . . . . . . . . . . . . . . . . . . . . . . . . . .13 9 Product Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
43、. . . . . . . . . . . . . . .14 10 User Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 11 Software Analysis and Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
44、. . . . . . . . . . . . . . . . .15 11.1 Software analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 11.2 Software testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
45、 . . . . . . . . . . . . .15 11.3 Failure mode and stress testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 12 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
46、 . . . . . . . . .17 12.1 User documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 12.2 Software plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47、. . . . .17 12.3 Risk analysis approach and results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 12.4 Confi guration management plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 12.5 Programmable system
48、 architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 12.6 Programmable component and software requirements specifi cation . . . . . . . . . . . . . . . .18 12.7 Software design documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 12.8 Analysis and test documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 1