NXP Semiconductors MCF5282CVF66

Overview

MCF5282CVF66 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 hardware EMAC unit - deployed in industrial networking gateways requiring deterministic real-time control and wired connectivity.

For engineers reviewing the MCF5282CVF66 datasheet, MCF5282CVF66 pinout, MCF5282CVF66 application, or MCF5282CVF66 equivalent, key selection criteria include Ethernet MAC+PHY interface support, CAN 2.0B compliance, QADC resolution and sampling rate, SDRAM controller timing compatibility, and ColdFire V2 ISA_A+ instruction set coverage for legacy firmware porting.

Technical Context

The MCF5282CVF66 implements the ColdFire Version 2 microarchitecture with a 5-stage pipeline, Harvard-style cache (4 KB instruction + 4 KB data), and tightly coupled EMAC unit supporting fractional multiply-accumulate operations. It executes the ISA_A+ instruction set with full backward compatibility to earlier ColdFire cores.

Its system-level integration includes dual interrupt controllers (INTC0/INTC1), a programmable PLL with selectable multiplication factors (1–32×), and peripheral modules mapped into a unified 32-bit address space - enabling deterministic interrupt latency and synchronized peripheral clock domain management for real-time industrial protocols.

Key Specifications

Pinout & Package

The MCF5282CVF66 is housed in a 256-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, measuring 28 × 28 mm. Thermal pad exposed on underside requires soldered thermal connection to PCB ground plane for sustained 66 MHz operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF52259CAG80 and Kinetis K60DN512ZVMD10, the MCF5282CVF66 delivers unique integration of FEC + dual FlexCAN + EMAC in a single ColdFire V2 die - making it irreplaceable for legacy ColdFire-based industrial Ethernet products requiring minimal hardware redesign.

Availability

MCF5282CVF66 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, automotive diagnostic tools, PLC I/O modules, and energy meter communication hubs requiring stable component supply across extended product lifecycles.

Supply support for MCF5282CVF66 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 MCF5282CVF66 belongs to the ColdFire V2 microcontroller family, designed specifically for deterministic real-time control in resource-constrained industrial networking equipment where Ethernet + CAN coexistence and legacy code compatibility are critical.

FAQ

What is the maximum operating frequency of the MCF5282CVF66?

The MCF5282CVF66 operates at a maximum core frequency of 66 MHz, achieved via its integrated Phase-Locked Loop (PLL) with programmable multiplication factor. This frequency is guaranteed across the industrial temperature range (–40°C to +85°C) when powered at 3.3 V ± 10% and using a stable 16 MHz crystal reference. The MCF5282CVF66 maintains full peripheral functionality-including FEC, FlexCAN, and QADC-at this rated speed.

Does the MCF5282CVF66 include an integrated Ethernet PHY?

No, the MCF5282CVF66 integrates only the Fast Ethernet Controller (FEC) MAC layer-not a physical layer (PHY). It requires an external 10/100 Mbps PHY chip connected via MII or RMII interface. The MCF5282CVF66 provides all necessary MAC signaling (TX_CLK, RX_CLK, TX_EN, CRS, COL, etc.) and MDIO/MDC management bus to configure and monitor the external PHY.

How much on-chip Flash and SRAM does the MCF5282CVF66 provide?

The MCF5282CVF66 contains 256 KB of on-chip Flash memory organized in 2 KB sectors for flexible erase/write operations, and 32 KB of on-chip SRAM. The SRAM is contiguous and can be configured as unified memory or split into instruction/data banks. Both memories retain full functionality during Doze mode, enabling fast wake-up with preserved context.

Is the MCF5282CVF66 pin-compatible with other ColdFire devices like the MCF5281?

No, the MCF5282CVF66 is not pin-compatible with the MCF5281. While both share the same 256-pin LQFP package outline, their pin assignments differ significantly-especially for FEC signals (e.g., MII vs. RMII routing), QSPI, and peripheral clock outputs. Migration from MCF5281 to MCF5282CVF66 requires PCB layout revision due to incompatible signal mapping and enhanced peripheral integration.

What debug interfaces does the MCF5282CVF66 support?

The MCF5282CVF66 supports IEEE 1149.1 JTAG Test Access Port (TAP) for boundary-scan testing and full-core debugging, plus Background Debug Mode (BDM) via dedicated pins (BKPT, TDI, TDO, TMS, TCLK). These interfaces enable non-intrusive real-time debugging, flash programming, and hardware breakpoint setting without requiring dedicated debug firmware on the MCF5282CVF66 itself.