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

ISO 9001 certified

ColdFire V1, CodeWarrior

embOS for ColdFire V1 was developed for and with FreescaleCodeWarrior version 6.2 and supports all memory models and calling conventions offered by this compiler. It comes with easy to use start projects for the Freescale CodeWarrior 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 30 bytes
RAM usage per resource semaphore 14 bytes
RAM usage per counting semaphore 8 bytes
RAM usage per mailbox 22 bytes
RAM usage per software timer 18 bytes
RAM usage event 6 bytes
Min. stack-size per task (RAM) 72 bytes
Context switch time TBD
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 CPUs and starterboards.

CPU Eval board
Freescale MCF51CN128 Freescale MCF51CN128
Freescale MCF51EM256 Freescale MCF51EM256
Freescale MCF51QE128 Freescale MCF51QE128