ULINKPRO Keil, ULINKPRO Datasheet - Page 43

• Manufacturer Part Number: ULINKPRO
• Description: KIT DEBUG/TRACE UNIT HIGH SPEED
• Manufacturer: Keil
• Type: In-Circuit, Real-Time Debugger/Programmerr

Specifications of ULINKPRO

• Contents: Module
• For Use With/related Products: ARM7, ARM9, Cortex
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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A preemptive RTOS supports multiple task priorities. Tasks with the same
priority are executed in sequence; tasks with a higher priority suspend tasks with
a lower priority. An ISR always interrupts task execution and may exchange data
with other tasks.
The RTOS also solves many other challenges specific to embedded applications.
It helps you to maintain memory resources and data communication facilities,
and allows you to split a complex application into simpler jobs.
Keil provides several different RTOS systems for the various microcontroller
architectures:
RTX51 Tiny and RTX166 Tiny (for 8051 and C166/XE166/XC2000) is a
non-preemptive RTOS and uses a special stack swapping technique designed
for devices with limited RAM
RTX (for ARM7/ARM9 and Cortex-Mx) and ARTX166 (for
C166/XE166/XC2000) are preemptive RTOS kernels offering task priority
levels. These kernels support message passing with ISRs and implement
functions with thread-safe memory block allocation and deterministic
execution times. An ISR may collect data into message buffers and send
messages to a high priority task, which subsequently performs complex data
processing. The ISR remains short and simple.
Chapter 4. RTX RTOS Kernel