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ISO 9001 certified

ARM7/9, ARM RVDS 3.0

embOS for ARM7 / ARM9 / XScale devices was developed for and with ARM RVDS 3.0. It comes with easy to use start projects and embOSView. Debugging with J-Link is supported.


Pricing Trial download Notification Subscribe to embOS software notification Release Notes


Resources and performance data

Memory usage
Kernel size (ROM) Approx. 2000 bytes
Kernel RAM usage 51 bytes
RAM usage per task control block 32 bytes
RAM usage per resource semaphore 8 bytes
RAM usage per counting semaphore 2 bytes
RAM usage per mailbox 20 bytes
RAM usage per software timer 20 bytes
RAM usage event 0 bytes
Min. stack-size per task (RAM) 56 bytes
Context switch time Max. 7.2 µs, independent of number of tasks
Interrupt latency time Zero
Kernel CPU usage/TICK Less than .2% of total calculation time at 1000 interrupts/second (1ms TICK)
Basic time unit (TICK) Typ. 1 ms, min. 20 µs (50 kHz interrupt frequency)
Max. no. of tasks Unlimited (by available RAM only)
Max. no. of mailboxes Unlimited (by available RAM only)
Max. no. of semaphores Unlimited (by available RAM only)
Max. no. of software timers Unlimited (by available RAM only)
Max. no. of priorities Unlimited
Stack size idle task (RAM) 0 (no memory needed)
Nested interrupts Permitted
Task switches from within ISR Possible


Board support packages

embOS comes with lots of ready to go start projects and support packages for various ARM CPUs and starterboards.

CPU Eval board
Atmel AT91M40xxx Atmel AT91M40xxx
Atmel AT91SAM7A3 Atmel AT91SAM7A3-EK
Atmel AT91SAM7S64 Atmel AT91SAM7S64-EK
Atmel AT91SAM7S256 Atmel AT91SAM7S256-EK
NXP LPC21xx Keil MCB2100 V3
ST STR71X ST STR710 evalboard