Silicon Labs Confidential

Software Quality at Silicon LabsJ U L Y 2 0 2 0

§ Silicon Labs Software History

§ Software Quality Activities

§ Silicon Labs Software Quality Policy

§ Additional Topics

Agenda

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Silicon Labs Software History

Silicon Labs Software Related Acquisitions

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Software portfolio increasing with time

Ember Corporation(Zigbee Soc, SW and Dev Tools)

Energy Micro(Low-Power ARM Cortex based MCUs

Touchstone Semiconductor (Low-Power Analog IC)

Telegesis (Zigbee/ Thread Modules)Bluegiga (Bluetooth Smart & Wi-Fi Modules)

Micrium(Real-Time Operating System RTOS)

Zentri(Wi-Fi and Bluetooth Smart Modules)

Z-Wave: Sigma Designs(Wireless Communications)

RedPine(Wi-Fi and Bluetooth)

202020192018201720162015201420132012

Silicon Labs’ Policy Update

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“Silicon Labs is committed to accomplishing total customer satisfaction by: Providing differentiated

products, solutions and services for a more connected world. Exceeding customer needs through

innovation and simplicity.”

The company’s quality policy was updated in January 2017 to include elements related to

software/systems

Software Types

§ Software available to customers includes:

§ Software development kits (SDKs)§ Tools§ Firmware (Fixed and Updatable)§ Sample code

Software Quality Activities

Recent Software Quality History

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SDLC – Software Development Life Cycle

2020: Software Quality teams move towards a standardized approach for change control metrics

2018: Software Quality instated as part of a Quality Management System

1H 2019: Silicon Labs standardized software quality policy established – Defined SDLC

1H 2019: Software teams go through software quality policy training

2019-2020: Internal audit process established for software: Software teams undergo software quality policy gap analysis and corrective action alignment steps.

2018 2019 2020

Software Quality Assessments

§ Software Development activities follow the Silicon Labs Software Quality Policy

§ Policy requirements are compatible with multiple standards § e.g. ISO 9001, IATF 16949, ISO 12207, and IEC 62304

§ Software Quality Compliance is assessed/audited internally

§ Software Quality is in scope of Silicon Labs’ ISO 9001 certification audits

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Software Quality Continuous Improvement

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Continuous Improvement activities include

§ Procedures to address required activities within the company

§ Record keeping of non-conformities

§ Usage of metrics for software development life cycle (SDLC) process improvements

§ Tracking of Quality Incidents (QIs) related to software

§ Corrective Action Preventive Actions (CAPAs)

§ Addressing any findings from Internal, and 3rd party Audits

§ Escalation processes for Software Quality Incidents and issuing of Software advisories

§ Escalation processes for Security Incidents and issuing of Security advisories as needed

Silicon Labs Software Quality Policy

The software quality policy directly provides guidance on what is expected of software that directly impacts customers’ operations or products

§ Software that is externally delivered to customers

§ Software that is used to evaluate products that are delivered to customers

§ Tools provided to customers to make product related decisions

§ Aligns to several industry software development standards/expectations

Teams are required to align to

§ Software Quality Policy and applicable collaterals

§ Their own Team Process documents that define the team’s purpose, workflow and deliverables

§ Providing evidence of applicable activities/collateral for software

Software Quality Policy Expectations

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SDLC Phases Relative to New Hardware Products

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New H/W Product•Initial idea vetting

New H/W Product •Hardware definition and related planning

New H/W Product •Implementation

New H/W Product•Product Launch

Software Concept/Feasibility

Requirements Gathering and Planning

Design and Implementation

Software Phases

Release/Maintain/ Update

Use Case/Acceptance Testing

Requirements/ Specifications Testing

• SDLC – Software Development Life Cycle• The waterfall approach uses a serial/sequential progression of SDLC activities.

Change Management

IC Development followed by first Silicon

Software Phase 1 Software Phase 2 Software Phase 3

Final Software Product Release

Early adopters Software Release

Policy Alignment in Iterative Development

Iteration 1 of new software product

Software Update activities occur per defined change control process

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Software Concept/ Feasibility

Requirements/ Specifications Testing

Design and Implementation

Use Case/ Acceptance Testing

Requirements Gathering and

PlanningRelease

Requirements Gathering and

Planning

Requirements / Specifications

Testing

Use Case/ Acceptance Testing

Design and Implementation

Release/ Update/ Maintain

Release tied to targets per initial plan

Initial Release Follow-on Releases per product roadmap

• SDLC – Software Development Life Cycle• The iterative development approach allows for changes and multiple updates and be aligned to SDLC expectations

Backlog/New Requirements

Examples of activities expected during SDLC steps

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Release/ Maintain/ Update

• Readiness Reviews• Software Release and documentation• Change management

Software Phase 1 Software Phase 3Software Phase 2

Software Concept/Feasibility

• Concept vetting & feasibility reviews

Requirements Gathering and

Planning

• Requirements Definition• Cost, Schedule, Resources • Risk Assessments, Architecture, Design & Development plan, Software Configuration Management plan, Test plan,

Risk Assessment/Software DFMEA

Design and Implementation

• Architectural definition, Design details, Coding/software development, Peer Reviews, Unit testing• Bug tracking, Test Enablement• Schedule & Plan execution alignment

Requirements/ Specifications Testing

• Functional and Regression tests and reports, traceability to requirements, software configuration management

Use Case/Acceptance Testing

• Smoke, Performance and Use Case testing and reports • Configuration and Release Management• Feature fulfillment checks

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V-model approach in the SDLC Steps

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Software Concept/Feasibility

Requirements Gathering and

Planning

Design and Implementation

Release/ Update/ Maintain

Use Case/Acceptance

Testing

Requirements/Specifications

Testing

SoftwarePhase 2

SoftwarePhase 3

SoftwarePhase 1

Additional Topics

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Change Control Activities

§ Software changes are tracked with version numbering scheme

§ Software changes are assessed using metrics evaluating bug and feature updates

§ Hardware change control tracking includes a software impact evaluation step

§ Change control activities for software teams occurs within:§ The software team§ Product Management Oversight§ Quality team review

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Beyond SDLC to secure SDLC

§ Silicon Labs has a Product Security Incident Response Team (PSIRT) and Process

§ Product Incidents are tracked across business areas, by rate of arrivals, source of discovery, etc.

§ Security advisories are issued based on multiple factors of issue involved

§ Several security policies are in place and increasing as the company ramps up its work in security

§ Security activities anticipated for the future include:§ Increased resources for supporting the security

infrastructure § Increased business solutions to address customer

product requests§ Increase internal and 3rd party audits related to

security activities and processes

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Thank You