emWin upgrade     Trade-In program     Web shop
Flag icon Head office Germany
Flag icon US office

ISO 9001 certified


embOS for RENESAS RX CCRX was developed for and with the RENESAS CCRX compiler and supports all data memory models offered by this compiler.
embOS for RX CCRX comes with easy to use start projects for several RX CPUs which may be used with the HEW or e2studio.
Software development and debugging with E1/E20 emulator as well as using J-Link RX or the simulator is supported.


Pricing Trial download Notification Subscribe to embOS software notification Release Notes


Resources and performance data

Memory usage
Kernel size (ROM) Approx. 1500 bytes
Kernel RAM usage 75 bytes
RAM usage per task control block 32 bytes
RAM usage per resource semaphore 16 bytes
RAM usage per counting semaphore 8 bytes
RAM usage per mailbox 24 bytes
RAM usage per software timer 20 bytes
RAM usage event 0 bytes
Min. stack-size per task (RAM) 56 bytes
Context switch time 0.8 µs
Interrupt latency time Zero
Kernel CPU usage/TICK Less than .1% 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 Unlimited
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 XRelease build on an RX71M CPU running at 240MHz.


Board support packages

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

CPU Eval board
Renesas RX111 Renesas RSKRX111
Renesas RX113 RenesasRSKRX113
Renesas RX130 Renesas RSKRX130
Renesas RX210 Renesas RPBRX210
Renesas RX210 Renesas RSKRX210
Renesas RX231 Renesas RSKRX231
Renesas RX23T Renesas RSKRX23T
Renesas RX24T Renesas RSKRX24T
Renesas RX62N Renesas RPBRX62N
Renesas RX62N Future Designs YRDKRX62N
Renesas RX62N Renesas RSKRX62N
Renesas RX610 Renesas RSKRX610
Renesas RX62T Renesas RSKRX62T
Renesas RX630 Renesas RSKRX630
Renesas RX63N Renesas RSKRX63N
Renesas RX63N Renesas YLCDRX63NE
Renesas RX63N Future Designs YRDKRX63N
Renesas RX63N FDI DK-43WQT-RX63N
Renesas RX64M Renesas RSK+RX64M
Renesas RX65N Renesas RSKRX65N
Renesas RX71M Renesas RSK+RX71M