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

ISO 9001 certified

ColdFire V1 / V2 / V3, IAR

embOS for ColdFire was developed for and with IAR Workbench version 1.22D and supports all memory models and CPU variiants offered by this compiler. It comes with easy to use start projects for the IAR Embedded Workbench.


Pricing Trial download Notification Subscribe to embOS software notification Release Notes


Resources and performance data

Memory usage
Kernel size (ROM) Approx. 1200 bytes
Kernel RAM usage 38 bytes
RAM usage per task control block 36 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 6 bytes
Min. stack-size per task (RAM) 72 bytes
Context switch time Approx. 5.00 µs
Interrupt latency time Zero
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 Unlimited
Stack size idle task (RAM) 0 (no memory needed)
Nested interrupts Permitted
Task switches from within ISR Possible

Board support packages

embOS comes with lots of ready to go start projects and support packages for various ColdFire V1 / V2 / V3 CPUs and starterboards.

CPU Eval board
Freescale PCF51AC256AVLKE Axiom DEMOAC AXM-0440
Freescale MCF5222x Freescale M52223EVB
Freescale PCF52233CAF60 Axiom M52233DEMO
Freescale MCF52223AF80 Freescale MCF52223_SK