embOS for Renesas Melps M7700 series and IAR compiler

embOS for Renesas M7700 was developed for and with IAR's compiler and supports all memory models offered by this compiler. It comes with an easy to use start project for IAR's embedded workbench.

Resources and performance data

Memory usage
Kernel size (ROM)	approx. 970 bytes
Kernel RAM usage	16 bytes
RAM usage per task control block	8 bytes
RAM usage per resource semaphore	8 bytes
RAM usage per counting semaphore	8 bytes
RAM usage per mailbox	7 bytes
RAM usage per software timer	7 bytes
RAM usage event	0 bytes
Min. stack-size per task (RAM)	40 bytes
Timing
Context switch time	tbd
Interrupt latency time	tbd
Kernel CPU usage/TICK	tbd
Basic time unit (TICK)	typ. 1 ms, min. 33.3 µs (33.3 kHz interrupt frequency)
Features
Max. no. of tasks	Unlimited (by available RAM only)
Max. no. of mailboxes	unlimited (by available RAM only)
Max. no. of semaphores (resource/binary/counting)	unlimited (by available RAM only)
Max. no. of software timers	unlimited (by available RAM only)
Max. no. of priorities	256
Stack size idle task (RAM)	0(no memory needed)
Nested interrupts	permitted
Task switches from within ISR	possible

Values given above were calculated for embOS M7700 with small memory model.

embOSView currently not available for M7700

Available Emulators

Lauterbach
Renesas
HP

Additional information

IAR Web site for additional compiler info / support
Renesas Web site for additional CPU info / support