Semiconductor Equipment and Materials International
3081 Zanker Road
San Jose, CA95134-2127
Phone:408.943.6900, Fax: 408.943.7943
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Background Statement for SEMI Draft Document 5002B
NEW STANDARD: SPECIFICATION FOR EDA COMMON METADATA
Notice: This background statement is not part of the balloted item. It is provided solely to assist the recipient in reaching an informed decision based on the rationale of the activity that preceded the creation of this Document.
Notice: Recipients of this Document are invited to submit, with their comments, notification of any relevant patented technology or copyrighted items of which they are aware and to provide supporting documentation. In this context, “patented technology” is defined as technology for which a patent has issued or has been applied for. In the latter case, only publicly available information on the contents of the patent application is to be provided.
What is the problem being solved?
The Equipment Data Acquisition (EDA) standards (SEMI E125, E134, and supporting standards) have entered a second freeze, based on the 0710 standards release, in preparation for widespread commercial use. The equipment metadata specified by SEMI E125 plays an important role in allowing the factory client to largely self-configure in support of rapid deployment and on-the-fly adjustment of data collection. Experience from initial EDA implementation showed that more direction is needed to attain the consistency of metadata definitions needed to optimize the data collection management process in a factory.
SEMI E120 provides the basic building blocks to model the equipment structure in metadata. SEMI E125 adds the definitions of state machines, objects, parameters, and exceptions. These general requirements provide a solid basis for metadata definitions. However, experience shows that much of the metadata model's concepts are already covered in other SEMI standards. This includes those most typically used for 300 mm process equipment. A consistent rendering of ProcessJobs, Substrates, Load Ports, and other such concepts specified in these standards would make the job of the EDA clients simpler. A standard definition of these concepts acceptable to all users would also make the job of the equipment-side implementer much easier.
EDA standards E125 and E120 define the structure and format of the metadata. What is needed is a specification that provides a definition of the metadata content commonly found on most equipment. This document proposes a new specification for that purpose. This specification does not conflict with SEMI E125. This means that an implementation can conform to both SEMI E125 and this specification.
This specification is expected to be synchronized with SEMI E125 so that if and when SEMI E125 changes, this specification will be changed to accommodate it.
What is the history of this issue and ballot?
This subject was first addressed by publicly available ISMI-published guidance and sample metadata. This material was refined through public input and various ISMI activities. The resulting content was brought into the SEMI standards process to undergo the global consensus process for the purpose of creating a specification acceptable to all. This is the third time this document has been balloted. It has undergone close scrutiny by standards members in multiple regions.
Who will this affect? How? Why?
This document will affect implementers and users of the 0710 version of EDA. All known EDA implementations to date are of the 1105 version. The industry is expected to transition to 0710 EDA beginning in 2012, a process that had begun. This specification is timely and if approved promptly, will aid this transition. Many implementers are already aware of the ISMI version of EDA Common Metadata and are using it to influence their current work.
This is a Draft Document of the SEMI International Standards program. No material on this page is to be construed as an official or adopted Standard or Safety Guideline. Permission is granted to reproduce and/or distribute this document, in whole or in part, only within the scope of SEMI International Standards committee (document development) activity. All other reproduction and/or distribution without the prior written consent of SEMI is prohibited.
Page 1Doc. 5002B SEMI
Semiconductor Equipment and Materials International
3081 Zanker Road
San Jose, CA95134-2127
Phone:408.943.6900, Fax: 408.943.7943
hb khghgh1000A5002B
Is this a change to an existing solution, or, is it a new activity?
This is a new activity that is related the existing E125 Equipment Self-Description specification.
Revision Control
This revision control records activity within the task force as well as formal submit and resubmit dates and results per SEMI. Entries have been made by the task force.
Date / Version / Name / Edits1/11/2012 / 2.1 / Lance Rist / First draft of 5002B for DDA TF review. Issues addressed noted in issues list at top.
1/17/2012 / 2.2 / Lance Rist / Second draft of 5002B for DDA TF review. Updated XML files included with this draft. Issues addressed noted in issues list at top.
1/24/2012 / 2.3 / Lance Rist / Third draft of 5002B for DDA TF review. Incorporated new I&C-Japan inputs and feedback from telecons on 1/19.
1/30/2012 / 2.4 / Lance Rist / Fourth draft of 5002B for DDA TF review. Most issues resolved.
2/2/2012 / 2.5 / Lance Rist / Fifth draft of 5002B. This version was approved for Cycle 2 ballot by the DDA TF pending final edits.
2/3/2012 / 3.0 / Lance Rist / Sixth draft of 5002B. This version includes the final edits and modifications approved by the DDA TF.
A Note on Requirements ID’s
Requirements ID’s are included in the proposed new standard by direction of the North America Information & Control Committee. The Requirements Identification section of the conventions, ¶6.1 describes how these are delimited. All requirements are clearly marked. No other text should be considered a requirement. Sections near a requirement may provide examples or other supporting text that can help with interpreting the requirement. Note that the word “should” is used in some non-requirements text and it denotes a recommendation or a suggestion, not a requirement.
The authors of this proposal have suggested requirement id numbers, but the final assignment will be made by SEMI. Corrections to the requirement numbers are considered editorial by agreement of the Information & Control
Committee.
Review and Adjudication Information
Task Force Review / Committee AdjudicationGroup: / Diagnostic Data Acquisition Task Force / North America I&C Committee
Date: / Tuesday, April 3, 2012 / Wednesday, April 4, 2012
Time & Timezone: / 8:00 AM to 3:00 PM, Pacific Time / 8:00 AM to 4:30 PM, Pacific Time
Location: / SEMI Headquarters / SEMI Headquarters
City, State/Country: / San Jose, California / San Jose, California
Leader(s): / Gino Crispieri (ISMI)
Brian Rubow (Cimetrix) / Jack Ghiselli (Ghiselli Consulting)
David Bricker (Applied Materials)
Lance Rist (RistTex)
Standards Staff: / Paul Trio (SEMI NA)
408.943.7041 / / Paul Trio (SEMI NA)
408.943.7041 /
This meeting’s details are subject to change, and additional review sessions may be scheduled if necessary. Contact Standards staff for confirmation.
Telephone and web information will be distributed to interested parties as the meeting date approaches. If you will not be able to attend these meetings in person but would like to participate by telephone/web, please contact Standards staff.
SEMI Draft Document 5002B
NEW STANDARD: SPECIFICATION FOR EDA COMMON METADATA
Table of Contents
1 Purpose
2 Scope
3 Limitations
4 Referenced Standards and Documents
4.1 SEMI Standards
5 Terminology
5.1 Acronyms and Abbreviations
5.2 Definitions
6 Conventions
6.1 Requirements Identification
6.2 Parameter Listings
7 Common Metadata Overview
8 Prerequisites
8.1 Required Standards
9 Requirements
9.2 General Metadata Requirements
9.3 Content Standards Requirements
APPENDIX 1
APPENDIX 2
RELATED INFORMATION 1
RELATED INFORMATION 2
1 Purpose
1.1 The purpose of this specification is to promote commonality among implementations by defining common representations and conventions of equipment metadata based on SEMI E125 Specification for Equipment Self-Description.
2 Scope
2.1 The scope of this specification includes:
- Common approaches for defining specific elements of equipment metadata
- The metadata representation of selected SEMI communication standards, including those widely used in 300 mm semiconductor factories
- This specification defines equipment metadata based on SEMI E125-0710 and SEMI E120-0310.
- This specification applies only to production equipment that act on substrates.
NOTICE:SEMI Standards and Safety Guidelines do not purport to address all safety issues associated with their use. It is the responsibility of the users of the Documents to establish appropriate safety and health practices, and determine the applicability of regulatory or other limitations prior to use.
3 Limitations
3.1 This specification defines metadata representations for data from selected SEMI communication standards.
3.1.1 This specification is not intended to require those standards be implemented in equipment. If a standard is not implemented, its associated data would not be required.
3.2 Intellectual property protection is a known issue that is related data collection. A mechanism for data security may exist.
3.2.1 An EDA client’s access to the items specified in an equipment’s metadata may be subject to user-controlled limitations.
3.2.1.1 SEMI E132-0310 (Section 10.2.10.1) provides for the definition of Privileges by equipment suppliers and by other SEMI specifications. Privileges may exist that grant or limit access to specific data.
3.2.1.2 Client-by-client data access limitations are not within the scope of this document.
3.2.2 Data security and intellectual property protection mechanisms are beyond the scope of this specification.
4 Referenced Standards and Documents
4.1 SEMI Standards
SEMI E30 — Generic Model for Communications and Control of Manufacturing Equipment (GEM)
SEMI E39— Object Services Standard: Concepts, Behavior, and Services
SEMI E40 — Standard for Processing Management
SEMI E87 — Specification for Carrier Management (CMS)
SEMI E90 — Specification for Substrate Tracking
SEMI E94 — Specification for Control Job Management
SEMI E116 — Specification for Equipment Performance Tracking (EPT)
SEMI E120 — Specification for the Common Equipment Model (CEM)
SEMI E125 — Specification for Equipment Self-Description (EqSD)
SEMI E128 — Specification for XML Message Structures
SEMI E132 — Specification for Equipment Client Authentication and Authorization
SEMI E134 — Specification for Data Collection Management (DCM)
SEMI E138 — XML Semiconductor Common Components
SEMI E145 — Classification for Measurement Unit Symbols in XML
SEMI E148 — Specification for Time Synchronization and Definition of the TS-Clock Object
SEMI E157 —Specification for Module Process Tracking
NOTICE: Unless otherwise indicated, all documents cited shall be the latest published versions.
5 Terminology
5.1 Acronyms and Abbreviations
5.1.1 EDA— Equipment Data Acquisition — Refers to the collection of SEMI standards that define the XML/SOAPbased data collection interface and consists of SEMI E125, SEMI E132, SEMI E134, SEMI E120, and those specifications that these standards reference.
5.1.2 EFEM— Equipment Front-End Module — A hardware component that provides access for carriers to the equipment. An EFEM encapsulates load ports, carrier locations, carrier handlers, and other associated mechanisms. In many cases, the EFEM also includes a substrate handler.
5.1.3 FIMS — Front-Opening Interface Mechanical Standard.
5.1.4 Uid — Unique Identifier — SEMI E120 Nameable instance identifier based on uuid.
5.1.5 uuid — Universally Unique Identifier — Defined in ISO/IEC 11578.
5.2 Definitions
5.2.1 camelcase— the practice of writing compound words or phrases in which each word is capitalized and all spaces, hyphens, and underscores are removed. When abbreviations are included, they retain the all-capitals form (e.g., AMHSPort).
5.2.2 content standards — for the purpose of this specification, the term content standards refers to the collection of standards containing definitions of data and behavior for the equipment which are to be represented in the equipment metadata within the scope of this specification. See ¶9.1 for a list of the content standards.
5.2.3 FIMS location—the "docked" position of a FOUP at a Load Port where the FOUP may be opened and wafers inserted or removed.
5.2.4 fixed buffer equipment—production equipment that has only fixed load ports and no internal buffer for carrier storage. Substrates are loaded and unloaded directly from the carrier at the load port for processing.
5.2.5 internal buffer—a set of locations within the equipment to store carriers. These locations exclude load ports.
5.2.6 internal buffer equipment—equipment that uses an internal buffer.
5.2.7 undocked location —the position of a FOUP at a load port where the FOUP may be loaded or unloaded from the equipment. See also the FIMS location definition.
6 Conventions
6.1 Requirements Identification
6.1.1 The following notation specifies the structure of requirement identifiers.
6.1.1.1 The following requirements prefix format is used at the beginning of requirement text. See Table 1 for the format notation of the requirements prefix.
- [Esss.ss-RQ-nnnnn-nn]
- To mark the end of the requirement text the following suffix format is used.
- [/RQ]
- Requirements in the body text are highlighted with a border and light green background (may appear gray in black and white printouts)
[Esss.ss-RQ-nnnnn-nn] Requirement text. [/RQ]
Table 1 Requirement Identifiers
Format Notation / PurposeEsss.ss / SEMI standards specification identifier. Examples: E087.00, E087.01, E134.00
RQ / Indicates this is a requirement identifier.
nnnnn / Unique five-digit number within this specification. 90000-99999 are reserved for use by SEMI.
.nn / Two-digit number that indicates version level of the requirement (.00 is used for the first version of a requirement)
/RQ / Indicates the end of a requirement
6.1.2 Requirements in tables are delimited in one of two ways.
6.1.2.1 Where the requirement occupies an entire row in the table, the requirement ID is placed in column 1. No "[/RQ]" is used to mark the end of the requirements text in this case. The table may also contain rows that are not requirements. In this case, the column 1 cell is left blank.
6.1.2.2 Non-requirements text related to a requirements row may be included in an adjacent row. The relationship between the rows is indicated by a broken line separating the two.
6.1.2.3 Where the requirement occupies only one cell, the text in the cell includes the requirement ID prefix and suffix similar to requirements in the body text.
6.1.2.4 No cell in a table will contain both requirement and non-requirement text.
6.1.2.5 Cells that contain requirements are shaded light green.
6.1.2.6 Table 2 provides an example of requirements in a table. Note that in this example, the same requirement is presented in two alternative formats. In practice, mixing the two approaches in the same table is not typically done.
Table 2 Example Table with Requirements
RequirementID / Statement / Additional DetailEsss.ss-RQ-nnnnn-nn / The light shall be blue / There shall be no similar color in the light panel.
The blue light is typically placed at the leftmost position in the light panel.
[Esss.ss-RQ-nnnnn-nn]The light shall be blue. There shall be no similar color in the light panel. [/RQ] / The blue light is typically placed at the leftmost position in the light panel.
6.1.3 Only text marked with the requirement identifier is a requirement of this specification.
6.1.3.1 Clarification, examples, and related recommendations may be provided near a requirement, but are not part of the requirement.
6.1.3.2 Note that the word “should” is used in some non-requirements text and it denotes a recommendation or a best practice, not a requirement.
6.1.4 Parent-child relationships of requirements are noted in the tables in APPENDIX 1. Where a parent requirement includes conditions or selection criteria, these are passed to their children. For example, if a parent requirement is stated to apply only to photolithography equipment, any child requirements also apply only to such equipment. The condition need not be restated for each child requirement.
6.2 Parameter Listings
6.2.1 Data variables from the content standards are represented in the equipment metadata as Parameters. The mapping of the data variables to Parameters is specified in tables using the format of Table 3. Table 4 explains the contents of each column in the Parameter Table example.
Table 3 Example Parameter Table
Requirement ID / EDA Parameter / Req / isTransient / SECS Variable / Type / Explanation[Esss.00-RQ-00xxx-00] / Parmeter1 / Y / Unrestricted / DataVariable1 / N/S / See E999-0707, ¶4.3.5.
Table 4 Parameter Table Columns
Column / DescriptionRequirementID / Requirement identifier defined according to ¶6.1
EDA Parameter / Name of the Parameter as it appears in the XML metadata files for the associated content standard.
Req / Whether the Parameter is required:
Y – Required
N – Not Required
C – Conditional (required in specified circumstances)
isTransient / Value of the isTransient attribute of the Parameter:
Transient
Unrestricted
Restricted.
SECS Variable / The name of the SECS data variable or object attribute represented by this metadata Parameter. This parameter is used in EDA wherever these variables are used in SECS (e.g., for corresponding events).
Type / Type of SECS data variable:
SV – Status Value
DVVAL – Data Value
N/S – Not Specified
Explanation / Text explaining conditional requirements and/or referencing the content standard specification of the variable.
6.2.2 The column labeled Req shows whether a Parameter is required for conformance to this specification.
6.2.2.1 For Parameters based upon a corresponding variable from a content standard, the Req value is generally based on the specification of that variable in the content standard. If the content standard requires the variable, this specification nearly always requires it. If the content standard specifies conditions, those are generally replicated here.
6.2.2.2 Where the variable is explicitly not required in the content standard, the corresponding Parameter is specified as not required. Parameters listed as not required are typically included so that when the implementer chooses to include them, they are implemented consistently.
6.2.2.3 Note that Parameters that are required or conditional are specified within the context of the parent requirements. For example, in Table 9, PRJobState is specified as required. A parent[1] requirement, RQ00061, is conditional upon support by the equipment of SEMI E40. PRJobState inherits that condition. Thus, the PRJobState is also conditional upon E40 support by the equipment. The ultimate parent requirement for this specification, RQ00002, also includes a condition that, in this example, means that if PRJobState is not included in the equipment’s SECS interface, it is not required in EDA.