Download HRTOS
Access HRTOS releases, development resources and technical documentation for 8051 and MCS-51 microcontrollers. Build your embedded applications on a complete real-time operating system.
HRTOS 4.0
The current generation of the HRTOS operating system for the 8051 platform.
Everything You Need to Get Started
Explore the documentation and resources available for developing applications with HRTOS.
Technical Documentation
Learn about system architecture, configuration, APIs, task management and kernel functionality.
Explore DocumentationApplication Examples
Explore practical examples covering sensors, displays, infrared communication and Modbus RTU.
Browse ExamplesDriver Library
Access peripheral drivers and hardware interface resources for common 8051 development projects.
Explore DriversSystem Requirements
Review the recommended development environment and hardware resources before building HRTOS projects.
Compiler
Keil C51 development environment for 8051 and MCS-51 microcontrollers.
Microcontroller
An 8051-compatible MCU. STC microcontrollers are among the supported development targets.
Memory Resources
The full HRTOS configuration requires at least 1 KB of XDATA and 8 KB of CODE memory.
Development Hardware
A compatible development board, programmer and debugging tools are recommended.
Start Building with HRTOS
Read the getting started guide, review the system architecture and explore practical application examples to begin your development.