Micriµm data sheet for µC/OS-II
TM
1
DESCRIPTION
The
µC/OS-II is a portable, ROMable, scalable, preemptive, real-time
deterministic multitasking kernel for microprocessors, microcontrollers
and DSPs. Offering unprecedented ease-of-use,
µC/OS-II is delivered with
complete 100% ANSI C source code and in-depth documentation.
µC/OS-II
runs on the largest number of processor architectures, with ports
available for download from the Micrium Web site.
µC/OS-II manages up to 250 application tasks. µC/OS-II includes:
semaphores; event flags; mutual-exclusion semaphores that eliminate
unbounded priority inversions; message mailboxes and queues; task,
time and timer management; and fixed sized memory block management.
µC/OS-II’s footprint can be scaled (between 5 Kbytes to 24 Kbytes) to
only contain the features required for a specific application. The execution
time for most services provided by
µC/OS-II is both constant and determi-
nistic; execution times do not depend on the number of tasks running
in the application.
A validation suite provides all documentation necessary to support the use
of
µC/OS-II in safety-critical systems. Specifically, µC/OS-II is currently imple-
mented in a wide array of high level of safety-critical devices, including:
– Those certified for Avionics DO-178B
– Medical FDA pre-market notification (510(k)) and pre-market approval
(PMA) devices
– SIL3/SIL4 IEC for transportation and nuclear systems, 99% compliant
with the Motor Industry Software Reliability Association (MISRA-C:1998)
C Coding Standards
APPLICATIONS
■ Avionics
■ Medical Equipment/Devices
■ Data Communications Equipment
■ White Goods (Appliances)
■ Mobile Phones, PDAs, MIDs
■ Industrial Controls
■ Consumer Electronics
■ Automotive
■ A Wide-Range of Embedded Applications
FEATURES
■ Unprecedented ease-of-use combined with an extremely short learning
curve enables rapid time-to-market advantage.
■ Runs on the largest number of processor architectures with ports easily
downloaded.
■ Scalability--Between 5 Kbytes to 24 Kbytes
■ Max interrupt disable time: 200 clock cycles (typical configuration,
ARM9, no wait states).
■ Sufficiently robust to meet rigorous safety-critical system requirements
■ Complete ANSI C source code is available for a 30-day trial use.
µC/OS-II
TM
Real-Time Operating System
µC/OS-II
Who should use this RTOS? Developers who want to save time
on their current and next embedded
system project, and who want the
cleanest, most popular, and robust
RTOS on the market.
Supported Processors See complete list in Processor Chart
Maximum ROM Footprint (Unscaled) 24 Kbytes
Minimum ROM Footprint (Scaled) 6 Kbytes
Number of Kernel Services 10 different using 80 API calls
Multitasking Model Preemptive
Code Execution Entities Tasks, ISRs
Dynamic Objects Static and Dynamic
Data Movement Message Mailboxes (unlimited)
and Message Queues (unlimited)
Semaphores - Full Counting Yes (unlimited)
Mutexes - With Priority Inheritance Yes (priority calling)
Event Flags Yes (unlimited), configurable
for 8, 16, or 32 bits
Memory Partitions - RAM Management Yes
Timers Yes (unlimited)
