Renesas expands RL78 ecosystem

May 10, 2011 // By Phil Ling
The microcontroller family now has additional compiler support from IAR Systems, as well as ports of real-time operating systems (RTOS) from Micrium and CMX Systems. The company claims it is in response to the market’s need for industry-standard development tools and middleware solutions.

IAR Systems’ Embedded Workbench provides C and C++ compilers for the RL78 MCU family and supports the E1 on-chip debugger and IECube in-circuit emulator tools, both from Renesas Electronics.

Embedded designers are expected to gain a competitive edge by using Micrium’s compact and scalable µC/OS-II and µC/OS-III kernels, which have been ported to the RL78 family of processors. Battery-operated, power-sensitive and eco-friendly applications should further benefit from Micrium’s µC/OS-II's and µC/OS-III's ability to enter the RL78 MCUs’ SNOOZE and HALT modes when idling.

CMX Systems has also ported its CMX-RTX operating system to Renesas Electronics’ RL78 MCU family. The small-footprint, low-latency RTOS is a pre-emptive, multi-tasking RTOS claimed to offer one of the smallest footprints, fastest context switching times, and lowest interrupt latency times available.

More information about Micrium, and the RL78 port, can be found at http://

More information about CMX Systems can be found at


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