Micrium uC/OS
IoT operating systems
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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$8,000.00 minimum one-time license fee
Free TrialFree version
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What is Micrium uC/OS
Micrium uC/OS is a real-time operating system (RTOS) used to build deterministic embedded and IoT firmware on microcontrollers and other resource-constrained devices. It targets engineers developing safety- or reliability-oriented applications that require predictable task scheduling, interrupt handling, and timing behavior. The product is commonly delivered as a commercial RTOS with optional middleware components (for example, networking and file system) and is designed to be portable across many MCU architectures.
Deterministic real-time scheduling
uC/OS is designed around deterministic task scheduling and low-latency interrupt handling, which fits control systems and time-sensitive embedded workloads. This RTOS approach is often preferred over general-purpose IoT operating systems when timing guarantees matter. It supports common RTOS primitives such as tasks/threads, semaphores, mutexes, and message queues.
Broad MCU portability
The uC/OS family is widely ported across microcontroller architectures, enabling reuse of an RTOS design across multiple hardware platforms. This helps teams standardize on one kernel while changing MCU vendors or device classes. Portability is typically achieved through a hardware abstraction layer and well-defined kernel interfaces.
Commercial support model
uC/OS is commonly used under commercial licensing with vendor-provided support, documentation, and long-term maintenance options. For organizations that require vendor accountability and controlled release management, this model can be easier to govern than community-only projects. It also aligns with regulated development processes that require traceability and formal change control.
Not a full Linux-class OS
As an RTOS, uC/OS focuses on deterministic scheduling rather than providing a full general-purpose user-space, package ecosystem, and rich device management found in larger IoT operating systems. Teams building gateway-class devices may need additional components or a different OS class for containerization, multi-user features, or extensive driver stacks. This can increase integration work when requirements expand beyond MCU firmware.
Middleware varies by license
Capabilities such as TCP/IP stacks, TLS, file systems, USB, or OTA update frameworks are not inherently guaranteed as part of the kernel and may depend on the specific Micrium package and licensing. Compared with some IoT OS distributions that bundle end-to-end connectivity and update tooling, teams may need to assemble and validate more of the platform themselves. This can affect time-to-market and certification scope.
Ownership and lifecycle complexity
Micrium uC/OS has changed ownership over time, which can complicate procurement, support channels, and long-term roadmap planning. Organizations may need to confirm the current product status, supported versions, and maintenance commitments with the present owner before standardizing. This is particularly important for long-lived embedded products with multi-year support obligations.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Micrium OS — deployment on Silicon Labs EFM32/EFR32 devices | $0 (free) | Officially provided entirely free of charge for deployment on Silicon Labs EFM32 and EFR32 devices; distributed via Simplicity Studio. |
| 45‑Day Single‑User Evaluation License | Free for 45 days | Evaluation license available (45 days). Evaluation copy cannot be used in commercial/internal products and expires after 45 days. |
| Commercial / Production License (non-evaluation or deployment on non‑Silicon Labs devices) | Not publicly listed — minimum $8,000.00 | Official site states license fee is based on actual use and "shall not be less than $8000.00 USD"; commercial licensing requires contacting sales. |
Seller details
Silicon Labs
Austin, Texas, United States
1999
Public
https://www.silabs.com/
https://x.com/siliconlabs
https://www.linkedin.com/company/silicon-laboratories
