NXP Semiconductors CWS-OSK-COREB-LX

Overview

CWS-OSK-COREB-LX from Freescale Semiconductor is a preconfigured OSEK/VDX-compliant Real-Time Operating System (RTOS) core package for BCC1 conformance class, supporting static configuration, preemptive scheduling, and cyclic task activation via alarms on 8-/16-/32-bit MCUs including MPC55xx and S12X families. It delivers 1.7 µs context switch (MPC555 @40 MHz), ≤466 bytes RAM footprint, and SEI CMM Level 5 certified stability for automotive ECU development.

For engineers reviewing the CWS-OSK-COREB-LX datasheet, CWS-OSK-COREB-LX pinout, CWS-OSK-COREB-LX application, or CWS-OSK-COREB-LX equivalent, key selection criteria include OSEK BCC1 compliance, static memory allocation model, kernel-aware debugging support in CodeWarrior IDE, ORTI interface availability, and target MCU architecture alignment (e.g., MPC555, HCS12DP256).

Technical Context

CWS-OSK-COREB-LX implements the OSEK OS Basic Conformance Class 1 (BCC1) specification with mandatory features: fixed-priority preemptive scheduling, one task per priority level, no task activation queueing, and no extended task states. It uses compile-time static configuration via OIL (OSEK Implementation Language) and excludes unused services automatically to minimize footprint.

The RTOS provides ORTI-compliant runtime interface for kernel-aware debugging, supports counter/alarm-driven cyclic task activation, priority ceiling protocol for resource management, and hardware-optimized stack handling-including stack monitoring and fast system data structure access-targeting deterministic real-time behavior in safety-critical embedded systems.

Key Specifications

Availability

CWS-OSK-COREB-LX is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC logic controllers, and telecom base station timing modules requiring stable component supply, long-term software lifecycle support, and ISO 26262-aligned development toolchain traceability.

Supply support for CWS-OSK-COREB-LX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Freescale Semiconductor (now part of NXP Semiconductors) was a leading provider of embedded processing solutions, specializing in automotive, industrial, and networking microcontrollers and development tools.

CWS-OSK-COREB-LX belongs to the OSEKturbo OS product line, designed specifically to deliver certified, production-ready real-time operating system cores for safety-critical automotive electronic control units compliant with OSEK/VDX standards.

FAQ

What is the OSEK conformance class supported by CWS-OSK-COREB-LX?

CWS-OSK-COREB-LX implements the OSEK/VDX Basic Conformance Class 1 (BCC1), which mandates one task per priority level, no task activation queuing, and no extended task states. This conformance ensures strict determinism and minimal memory overhead-critical for automotive ECUs where predictability and certification evidence are required. The CWS-OSK-COREB-LX package is validated for BCC1 operation across all supported targets including MPC555 and HCS12DP256.

Does CWS-OSK-COREB-LX support kernel-aware debugging?

Yes, CWS-OSK-COREB-LX includes full ORTI (OSEK Runtime Interface) v2.5 support, enabling kernel-aware debugging within CodeWarrior Development Studio. This allows engineers to inspect task states, alarm status, counter values, and resource ownership in real time without halting execution. The CWS-OSK-COREB-LX integration with CodeWarrior's plug-in provides visibility into the RTOS internals during both simulation and hardware debug sessions.

What memory footprint does CWS-OSK-COREB-LX require on MPC555?

On the MPC555 microcontroller running at 40 MHz, CWS-OSK-COREB-LX requires 2304 bytes of ROM and 466 bytes of RAM. This includes OS code (2196 bytes), OS data (108 bytes), and accounts for static configuration with no dynamic allocation. The compact footprint makes CWS-OSK-COREB-LX suitable for cost-sensitive automotive applications where flash and RAM resources are tightly constrained.

Which microcontroller families are officially supported by CWS-OSK-COREB-LX?

CWS-OSK-COREB-LX is validated for Freescale's 8-, 16-, and 32-bit architectures, including 68HC08, 68HC(S)12, S12X, MPC5xx, MPC5200, MPC55xx, MAC7100, and DSP56800E. Each port is optimized for its target ISA and memory map. The CWS-OSK-COREB-LX release includes prebuilt libraries and OIL templates specific to these families, ensuring binary compatibility and deterministic timing.

How is CWS-OSK-COREB-LX configured for a specific application?

CWS-OSK-COREB-LX uses static configuration via the Freescale OSEK Builder tool, which generates OIL (OSEK Implementation Language) files describing tasks, alarms, counters, resources, and scheduling parameters. These OIL files drive automatic library generation and header synthesis-no runtime configuration occurs. The CWS-OSK-COREB-LX build process embeds only enabled features, eliminating unused code and guaranteeing reproducible, auditable binaries for safety-critical deployment.