NXP Semiconductors MCF5282CVM66J

Overview

MCF5282CVM66J from NXP (formerly Freescale) is a 32-bit ColdFire V2 microcontroller featuring a 66 MHz core clock, 256 KB on-chip Flash memory, 32 KB SRAM, integrated Fast Ethernet Controller (FEC), FlexCAN interface, and QADC/QSPI peripherals. It targets industrial networking, protocol gateway, and real-time control applications requiring deterministic timing and multi-protocol connectivity.

For engineers reviewing the MCF5282CVM66J datasheet, MCF5282CVM66J pinout, MCF5282CVM66J application, or MCF5282CVM66J equivalent, key selection considerations include its 66 MHz ColdFire V2 core performance, FEC + FlexCAN dual-communication capability, 256 KB flash with security features, low-power modes (Doze/Stop), and LQFP-144 package compatibility with legacy MCF528x designs.

Technical Context

The MCF5282CVM66J implements the ColdFire Version 2 microarchitecture with a 32-bit Harvard-style pipeline, 4 KB instruction cache, and enhanced MAC unit supporting fractional arithmetic. Its memory subsystem includes configurable 256 KB Flash (with CFM security registers), 32 KB SRAM, and external bus interface supporting SDRAM, SRAM, and peripheral mapping via Chip Select and EIM modules.

System-level integration includes a programmable PLL for clock generation, dual interrupt controllers (INTC0/INTC1), IEEE 1149.1 JTAG debug support, and power management with Run/Wait/Doze/Stop modes. Peripheral set is optimized for embedded networking: FEC operates at 10/100 Mbps in full/half-duplex, FlexCAN supports CAN 2.0A/B, and QADC provides 12-bit resolution with queue-based sampling.

Key Specifications

Pinout & Package

LQFP-144 (20 × 20 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, lead-free finish. Pinout validated per Freescale MCF5282UM Rev. 3 signal descriptions and mechanical data (Chapter 14).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MCF5282CVM66J, the MCF5282CVM80 offers higher clock headroom within identical hardware constraints, while the K66F180M18 provides modern ARM toolchain support and expanded memory at the cost of architectural discontinuity and no pin compatibility.

Availability

MCF5282CVM66J is available at Aetrix Electronics and suitable for industrial networking, real-time motor control, and secure remote I/O applications requiring stable component supply and long-term lifecycle assurance.

Supply support for MCF5282CVM66J 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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with roots in Freescale's embedded processor heritage.

The MCF5282CVM66J belongs to the ColdFire V2 microcontroller family, designed specifically for deterministic real-time control in resource-constrained industrial networking and protocol gateway applications.

FAQ

What is the maximum operating frequency of the MCF5282CVM66J?

The MCF5282CVM66J is rated for a maximum core clock frequency of 66 MHz, achieved via its integrated Phase-Locked Loop (PLL) using an external crystal (4–50 MHz) or oscillator input. This frequency is guaranteed across industrial temperature range (–40°C to +85°C) and specified supply conditions (VDDCORE = 1.5 V ± 3%, VDDIO = 3.3 V ± 5%). The MCF5282CVM66J does not support overclocking beyond this specification.

Does the MCF5282CVM66J include hardware encryption or secure boot features?

The MCF5282CVM66J does not integrate dedicated cryptographic accelerators or hardware AES engines. However, it supports secure boot through ColdFire Flash Module (CFM) security registers (CFMSEC), back-door access lock, and flash protection (CFMPROT), enabling firmware authentication and write-protection schemes implemented in software. These features are documented in Chapter 6 of the MCF5282UM Rev. 3 manual.

Can the MCF5282CVM66J operate in low-power modes while maintaining Ethernet connectivity?

No - the Fast Ethernet Controller (FEC) is disabled in all low-power modes except Run mode. In Wait, Doze, and Stop modes, the FEC clock is gated and its internal state is lost. To maintain network presence, the MCF5282CVM66J must remain in Run mode or use external wake-on-LAN circuitry with host-controlled power sequencing. This behavior is defined in Section 7.3.2.13 of the MCF5282UM.

What debug interfaces are supported by the MCF5282CVM66J?

The MCF5282CVM66J supports IEEE 1149.1 JTAG Test Access Port (TAP) for boundary-scan testing and full-core debugging, including halt/resume, register inspection, and flash programming. It also supports Background Debug Mode (BDM) via dedicated pins for real-time tracing and non-intrusive breakpoints. Both interfaces are electrically and logically defined in Chapter 1 and Appendix A of the MCF5282UM Rev. 3.

Is the MCF5282CVM66J pin-compatible with other MCF528x variants?

Yes - the MCF5282CVM66J is pin-compatible with other MCF528x family members in the same LQFP-144 package, including MCF5282CVM80 and MCF5281CVM66J. Signal mapping, power pin locations, and peripheral pin assignments are identical across these variants, enabling frequency- or feature-scaling without PCB redesign. This compatibility is confirmed in the Mechanical Data chapter (Ch. 14) of the MCF5282UM.