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ISO 9001 certified

FR30/50/70, Softune

embOS for Spansion FR supports all CPUs with FR30, FR50 or FR70 core. It was developed for and with Spansion's Softune compiler Fcc911s and supports all memory models offered by this compiler. It comes with easy to use start workspaces and projects for the Softune workbench. Software development with debugger, emulator and Softune simulator is supported.


Pricing Trial download Notification Subscribe to embOS software notification Release Notes


Resources and performance data

Memory usage
Kernel size (ROM) Approx. 1700 bytes
Kernel RAM usage 46 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) 64 bytes
Context switch time 984 clock cycles (20.5 µs), independent of number of tasks
Interrupt latency time Zero for high priority interrupts
Max. 444 clock cycles (9.25 µs) for low priority interrupts
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 255
Stack size idle task (RAM) 0 (no memory needed)
Nested interrupts Permitted
Task switches from within ISR Possible

Absolute timings given above were measured with embOS release build on an MB91362 CPU running at 48MHz.

Board support packages

embOS comes with lots of ready to go start projects and support packages for various FR30/50/70 CPUs and starterboards.

CPU Eval board
 Spansion MB91362 Spansion MB91362
 Spansion MB91364 Spansion MB91364
 Spansion MB91469G Spansion MB91469G