embOS

One professional solution for all embedded applications

embOS is an RTOS family designed to be foundation for embedded application development. Now in its fourth decade of continuous use and enhancement, it provides the reliability, versatility, and performance that underpin the firmware of every SEGGER Flasher, J-Link and J-Trace.

1. Overview

2. Key features

3. Use cases

4. embOS editions

5. Supported devices

6. Licensing

7. embOS empowers all SEGGER hardware products

Overview

embOS is a family of real-time operating systems (RTOSs) designed to serve as a foundation for embedded-application development. Now in its fourth decade of continuous use and enhancement, embOS provides the reliability and performance that underpin the firmware of every SEGGER Flasher, J-Link, and J-Trace. embOS is available for all popular cores, compilers, and development tools, and it has been deployed in several billion devices across a wide range of application areas.

The embOS family consists of the ultra-reliable embOS-Safe, embOS-MPU and embOS-Classic, as well as the cutting-edge embOS-Ultra.

While most RTOSs couple their timing tightly with a periodic system tick hardware timer, embOS-Ultra offers a completely new approach to scheduling in an embedded system completely eliminating polling and no-operation context switches. This feature opens new fields of applications for an RTOS.

Key features

embOS is built to empower developers with the tools they need to create efficient, reliable, and scalable embedded systems. Its design reflects decades of refinement, ensuring it meets the divers requirements of modern applications while remaining adaptable to a broad range of hardware and development environments.

Reliability

Now in its fourth decade, embOS has proven its reliability after being deployed in several billion devices. An edition certified for functional safety in accordance with IEC 61508 SIL 3, IEC 62304 Class C, and ISO 26262 ASIL D is available as well.

Efficiency

embOS is a high-performance real-time operating system. It has been optimized for minimum memory consumption in both RAM and ROM, as well as for high speed and versatility.

Availability

embOS supports virtually any core and compiler by more than 100 embOS ports, including over 500 board support packages for the embedded market.

Use cases

embOS is suitable for a wide range of use cases across a variety of applications. In general, something that all of these use cases have in common is that they operate with one or multiple microcontrollers or -processors. Sample use cases are described below:

Battery-Powered Devices

Networking and IoT

Safety-Critical Devices

Precise and Predictable Control Systems

Wherever power is a valuable resource (such as handheld devices), low-power operation modes should be employed as often as possible. All embOS editions include features to significantly reduce power consumption, and they are tailored to run on even the smallest microcontrollers.

Connected networks introduce a variety of tasks that might interfere with the original intended use of the device. All embOS editions provide robust and proven task management functions to ensure safe operation under adverse conditions.

Products benefit embOS-Safe's functional safety certification. Certification is in accordance with IEC 61508 SIL 3, IEC 62304 Class C, and ISO 26262 ASIL D. Certification has been achieved without modifications to the backbone, which serves as a foundation for all embOS editions.

Closed-loop and other control systems require real-time conditions to operate. embOS warrants deterministic behavior by design, and embOS-Ultra takes precision even further by providing enough headroom for future applications.

embOS editions

embOS-Ultra

embOS-Safe

embOS-MPU

embOS-Classic

The next generation RTOS

Safety-certified RTOS

The heart of every safety-critical IoT device

The leading real-time operating system

embOS-Ultra offers higher precision and time resolution than any other RTOS on the market, resulting in less energy consumption and improved performance.

embOS is a certified RTOS according to IEC 61508 SIL 3, IEC 62304 Class C, and ISO 26262 ASIL D. embOS-Safe comes with a certification kit containing all necessary documents, including the comprehensive embOS Safety manual.

embOS -MPU offers memory protection in addition to the proven embOS RTOS. It significantly enhances both stability and safety for embedded applications, simplifying any certification process.

embOS-Classic has proven its reliability in billions of deployed devices over several decades, and it lays the foundation for all embOS editions.

Supported Devices

embOS supports almost all popular microcontrollers and other CPUs. In general, if a core is supported, then all that is needed is a fairly simple board support package either derived from an existing package, or selected from packages that SEGGER's engineers have already developed.

Chip Vendor	Core	Compiler / IDE	embOS	Part#
Simulation	x86 / x86_64	Linux	embOS-Classic Sim Linux	1.40.x.35
		Microsoft VisualStudio	embOS-Classic Sim VisualStudio	1.40.x.29
		MinGW / GCC	embOS-Classic Sim MinGW	1.40.x.30
		Linux	embOS-Classic MPU Sim Linux	1.23.x.35
ARM	ARM7 / ARM9	ARM ADS 1.2 toolkit	embOS-Classic ARM ADS12	1.08.x.13
		ARM RVDS 3.0	embOS-Classic ARM RVDS30	1.08.x.16
		GCC	embOS-Classic ARM GCC	1.08.x.25
		IAR EWARM	embOS-Classic ARM IAR	1.08.x.01
		Keil MDK	embOS-Classic ARM Keil MDK	1.08.x.08
		Rowley CrossWorks	embOS-Classic ARM Rowley	1.08.x.14
		SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28
	Cortex-A / Cortex-R	GCC	embOS-Classic ARM GCC embOS-Classic ARM64 GCC	1.08.x.25 1.45.x.25
		IAR EWARM	embOS-Classic ARM IAR	1.08.x.01
		Keil MDK	embOS-Classic ARM Keil MDK	1.08.x.08
		Rowley CrossWorks	embOS-Classic ARM Rowley	1.08.x.14
		SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28
	Cortex-M	ARM DS-5	embOS-Classic Cortex-M DS5	1.23.x.27
		GCC	embOS-Ultra Cortex-M GCC embOS-Classic Cortex-M GCC embOS-Classic-MPU Cortex-M GCC	15.23.x.25 1.23.x.25 1.73.x.25
		IAR EWARM	embOS-Ultra Cortex-M IAR embOS-Classic Cortex-M IAR embOS-Classic-MPU Cortex-M IAR	15.23.x.01 1.23.x.01 1.73.x.01
		Keil MDK	embOS-Classic Cortex-M Keil MDK	1.23.x.08
		Rowley CrossWorks	embOS-Classic Cortex-M Rowley	1.23.x.14
		SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
		TI Code Composer	embOS-Classic Cortex-M TICC	1.23.x.22
Allwinner	Cortex-A / Cortex-R	SEGGER Embedded Studio	embOS-Ultra ARM ES	15.08.x.28
Ambiq Micro	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
Cypress Semiconductor	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
	F2MC-16LX/FX	Softune	embOS-Classic F2MC-16LX/FX Softune	1.07.x.05
	FR30/50/70	Softune	embOS-Classic FR30/50/70 Softune	1.14.x.05
GigaDevice	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
	RISC-V	SEGGER Embedded Studio	embOS-Ultra RISC-V ES embOS-Classic RISC-V ES	15.55.x.28 1.55.x.28
		GCC	embOS-Classic RISC-V GCC	1.55.x.25
		IAR	embOS-Classic RISC-V GCC	1.55.x.01
IDT	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
Infineon	C16x	Keil MDK	embOS-Classic C16x Keil MDK	1.11.x.08
		Tasking	embOS-Classic C16x Tasking	1.11.x.02
	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
Intel FPGA (Altera)	Cortex-A / Cortex-R	SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28
Intel FPGA (Altera)	NIOS2	Altera GCC	embOS-Classic NIOS2 GNU	1.16.x.11
Maxim Integrated	ARM7 / ARM9	SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28
Maxim Integrated	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
Microchip	AVR ATMega / ATXMega	IAR	embOS-Classic AVR IAR	1.10.x.01
	AVR32	GNU	embOS-Classic AVR32AP GNU	1.28.x.11
		GNU	embOS-Classic AVR32UC GNU	1.28.x.11
		IAR	embOS-Classic AVR32UC IAR	1.28.x.01
	Cortex-A / Cortex-R	SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28
	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
	PIC18	Microchip XC18	embOS-Classic PIC18 MPLAB C18	1.29.x.18
	PIC24/PIC30/dsPIC33	Microchip XC16	embOS-Classic PIC24 XC16	1.22.x.18
	PIC32	Microchip XC32	embOS-Classic PIC32 XC32	1.25.x.18

Nordic Semiconductor	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
Nuvoton	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
NXP	ColdFire	CodeWarrior	embOS-Classic ColdFire CodeWarrior	1.21.x.1.7
		CodeWarrior MCU	embOS-Classic ColdFire CodeWarrior MCU	1.21.x.33
		CodeWarrior	embOS-Classic ColdFireV1 CodeWarrior	1.31.x.17
		IAR	embOS-Classic ColdFire IAR	1.21.x.01
	Cortex-A / Cortex-R	SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28
	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
	HCS12	CodeWarrior	embOS-Classic HCS12 CodeWarrior	1.37.x.17
	PowerPC	CodeWarrior	embOS-Classic PowerPC CodeWarrior	1.38.x.17
	S12Z	S12lisa	embOS-Classic S12Z S12lisa	1.44.x.31
	SO8	CodeWarrior	embOS-Classic SO8 CodeWarrior	1.33.x.1.7
OKI Semiconductor	ARM7 / ARM9	SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28
Renesas	78K0	IAR	embOS-Classic 78K0/K0S/K0R IAR	1.02.x.01
	78K4	IAR	embOS-Classic 78K4 IAR	1.02.x.01
	Cortex-A / Cortex-R	SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28
	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
	H8/H8S/H8SX	IAR	embOS-Classic H8/H8S IAR	1.18.x.01
		HEW	embOS-Classic H8/H8S/H8SX HEW	1.18.x.07
	M16C/R8C	HEW	embOS-Classic R8C HEW	1.20.x.07
		GNU	embOS-Classic M16C GNU	1.05.x.11
		NC30	embOS-Classic M16C NC3	1.05.x.04
		IAR	embOS-Classic M16C/R8C IAR	1.05.x.01
		Tasking	embOS-Classic M16C/R8C Tasking	1.05.x.02
	M32C/M16C80	NC308	embOS-Classic M32C/M16C80 NC308	1.06.x.04
		IAR	embOS-Classic M32C/M16C80 IAR	1.06.x.01
	RA	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
	RE01	SEGGER Embedded Studio	embOS-Classic Cortex-M ES embOS-Ultra Cortex-M ES	1.23.x.28 15.23.x.28
	RH850	IAR	embOS-Classic RH850 IAR	1.42.x.01
	RL78	CCRL	embOS-Classic RL78 CCRL	1.36.x.07
		IAR	embOS-Classic RL78 IAR	1.36.x.01
	RX	IAR	embOS-Classic RX IAR	1.34.x.01
		CCRX	embOS-Classic RX CCRX	1.34.x.07
		GNU	embOS-Classic RX GNU	1.34.x.23
	RZ	KPIT GNU	embOS-Classic RZ KPIT GNU	1.08.x.23
	R32C	IAR	embOS-Classic R32C IAR	1.26.x.01
		HEW	embOS-Classic R32C HEW	1.26.x.07
	SH2	HEW	embOS-Classic SH2 HEW	1.24.x.07
	SH2A	HEW	embOS-Classic SH2A HEW	1.27.x.07
		HEW GNU	embOS-Classic SH2A HEW GNU	1.27.x.11
		IAR	embOS-Classic SH2A IAR	1.27.x.01
	V850	GreenHills	embOS-Classic V850 GreenHills	1.03.x.03
		IAR	embOS-Classic V850 IAR	1.03.x.01
		NEC	embOS-Classic V850 NEC	1.03.x.19
Silicon Labs	8051	IAR	embOS-Classic 8051 IAR	1.39.x.01
Silicon Labs	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
SiFive	RISC-V	SEGGER Embedded Studio	embOS-Ultra RISC-V ES embOS-Classic RISC-V ES	15.55.x.28 1.55.x.28
		GCC	embOS-Classic RISC-V GCC	1.55.x.25
		IAR	embOS-Classic RISC-V IAR	1.55.x.01

ST Microelectronics	Cortex-A / Cortex-R	SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28
	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
	STM8	IAR	embOS-Classic STM8 IAR	1.35.x.01
	ST7	Cosmic	embOS-Classic ST7 Cosmic	1.12.x.09
Synopsys	ARC EM4	MetaWare	embOS-Classic ARC MetaWare	1.47.x.33
Texas Instruments	Cortex-A / Cortex-R	SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28
	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
	CR16C	IAR	embOS-Classic CR16C IAR	1.19.x.01
	MSP430	GCC	embOS-Classic MSP430 GCC	1.15.x.25
		IAR	embOS-Classic MSP430 IAR	1.15.x.01
		Rowley	embOS-Classic MSP430 Rowley	1.15.x.14
		TICC	embOS-Classic MSP430 TICC	1.15.x.22
Toshiba	Cortex-A / Cortex-R	SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28
	Cortex-M	SEGGER Embedded Studio	embOS-Ultra Cortex-M ES embOS-Ultra-MPU Cortex-M ES embOS-Classic Cortex-M ES embOS-Classic-MPU Cortex-M ES	15.23.x.28 15.73.x.28 1.23.x.28 1.73.x.28
	TLCS-900	Toshiba	embOS-Classic TLCS-900 Toshiba	1.13.x.12
Xilinx	Cortex-A / Cortex-R	SEGGER Embedded Studio	embOS-Ultra ARM ES embOS-Classic ARM ES	15.08.x.28 1.08.x.28

Licensing

embOS is available under various Embedded Software License models and delivered in source code packages. With a wide range of licensing options, can fulfill commercial requirements as well as technical requirements.

embOS is royalty-free and not subscription-based. This makes the software a part of the equipment expenses, keeping the costs static.

embOS evaluation and non-commercial use is unrestricted.

The licenses include:

6 months of updates and support by SEGGER's Embedded Experts

* Applies to second seat/product and all additional seats/products of the Single Product License and Single Developer License.

embOS empowers all SEGGER hardware products