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ISO 9001 certified

M32C/M16C80, NC308

embOS for Renesas M16C80 / M32C was developed for and with Renesas NC308 compiler and supports all memory models offered by this compiler. It comes with easy to use start projects for Renesas HEW V4. Software development with PD308 debugger, KD308- or KD3083-ROM-Monitor, PD308 simulator or HEW M32C simulator is supported.


Pricing Trial download Notification Subscribe to embOS software notification Release Notes


Resources and performance data

Memory usage
Kernel size (ROM) 1434 bytes
Kernel RAM usage 37 bytes
RAM usage per task control block 27 bytes
RAM usage per resource semaphore 6 bytes
RAM usage per counting semaphore 2 bytes
RAM usage per mailbox 13 bytes
RAM usage per software timer 13 bytes
RAM usage event 0 bytes
Min. stack-size per task (RAM) 50 bytes
Context switch time 416 clock cycles (20.8 µs), independent of number of tasks
Interrupt latency time Max. 164 clock cycles (8.2 µs)
Kernel CPU usage/TICK Less than .3% of total calculation time at 1000 interrupts/second (1ms TICK)
Basic time unit (TICK) Typ. 1 ms, min. 10 µs (100 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 data given above were measured with embOS release build on an M30803FG CPU running at 20MHz in NEAR memory model.


Board support packages

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

CPU Eval board
Renesas M32C87 Renesas M32C87 evalboard
Renesas M16C80 Renesas M16C80 evalboard
Renesas M32C Reneass M32C evalboard
Renesas M32C87 Renesas M32C87 evalboard