NXP Semiconductors MCF5272VM66

Overview

MCF5272VM66 from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire® V2 integrated microprocessor with a 66 MHz CPU core, on-chip SDRAM controller, 10/100 Mbps Ethernet MAC, USB 1.1 device controller, and QSPI interface. It integrates a hardware MAC unit, DMA engine, and multiple UARTs for embedded networking and industrial control applications.

For engineers reviewing the MCF5272VM66 datasheet, MCF5272VM66 pinout, MCF5272VM66 application, or MCF5272VM66 equivalent, key selection criteria include its 66 MHz ColdFire V2 core performance, integrated Ethernet PHY interface support via PLIC, SDRAM timing configuration flexibility, and USB device-only functionality without host capability.

Technical Context

The MCF5272VM66 implements the ColdFire V2 architecture with a three-stage pipeline, 16 KB instruction cache, and hardware multiply-accumulate (MAC) unit optimized for DSP-like operations. It supports big-endian memory addressing and includes a System Integration Module (SIM) for clock generation, reset control, and power management.

Its integrated peripherals include a full-duplex 10/100 Mbps Ethernet MAC with MII interface, USB 1.1 device controller supporting up to 12 endpoints, and a Physical Layer Interface Controller (PLIC) for ISDN BRI/GCI/IDL physical layer interfacing - all managed through dedicated register sets and interrupt vectors mapped in the 32-bit address space.

Key Specifications

Pinout & Package

Package: 256-pin PQFP (Plastic Quad Flat Package), 28 × 28 mm, 0.65 mm pitch - suitable for industrial PCB assembly with thermal pad grounding.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF5272VM66, MCF5271VM66 offers identical core performance and Ethernet capability but removes USB and PLIC-ideal for cost-sensitive Ethernet-only designs. MCF5282VM66 provides architectural upgrades including USB host mode and larger on-chip memory, but requires new PCB layout and toolchain migration.

Availability

MCF5272VM66 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, ISDN telephony systems, USB-based PLC programming interfaces, and networked sensor controllers requiring stable component supply across long-life production cycles.

Supply support for MCF5272VM66 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 company formed from the spin-off of Philips' semiconductor division, specializing in secure connectivity and embedded processing solutions for automotive, industrial, and IoT markets.

The MCF5272VM66 belongs to the ColdFire® V2 microprocessor family, designed specifically for cost-sensitive, high-integration embedded networking applications requiring Ethernet, USB, and ISDN physical layer support in a single chip.

FAQ

What is the maximum SDRAM capacity supported by the MCF5272VM66?

The MCF5272VM66 supports up to 128 MB of external SDRAM using its 32-bit data bus and programmable row/column address mapping. This is achieved through configurable SDRAM timing registers (SDCR and SDTR) that allow tuning for specific memory part parameters including CAS latency, burst length, and refresh interval - all critical for reliable operation across temperature and voltage variations in industrial environments. The MCF5272VM66 does not support DDR or LPDDR memory types.

Does the MCF5272VM66 include an integrated Ethernet PHY?

No, the MCF5272VM66 includes only a Media Access Control (MAC) layer for 10/100 Mbps Ethernet. It requires an external PHY chip connected via the MII interface (pins ETH_TXD[3:0], ETH_RXD[3:0], ETH_TX_EN, ETH_RX_ER, etc.) to complete the physical layer. The MCF5272VM66 provides the MDC/MDIO management interface to configure the external PHY, but does not integrate transceiver circuitry, magnetics, or line drivers. This separation allows design flexibility in selecting PHYs with specific ESD ratings or automotive qualification.

Can the MCF5272VM66 operate as a USB host?

No, the MCF5272VM66 implements only a USB 1.1 device controller - it cannot function as a USB host. Its USB module supports control, bulk, and interrupt transfer types exclusively in device mode, meaning it must connect to a USB host (e.g., PC or industrial HMI) and cannot enumerate or control USB peripherals like flash drives or keyboards. This limitation is inherent to the silicon design and cannot be enabled via firmware or configuration registers. For host capability, consider the MCF5282VM66 or later ColdFire generations.

What debug interfaces are available on the MCF5272VM66?

The MCF5272VM66 provides IEEE 1149.1 JTAG Test Access Port (TAP) for boundary-scan testing and on-chip debugging via the Background Debug Mode (BDM) protocol. This interface supports full visibility into CPU registers, memory, and peripheral control registers during runtime, enabling breakpoints, watchpoints, and flash programming without halting real-time operation. No SWD, SWIM, or proprietary debug interfaces are implemented - BDM over JTAG is the sole standardized debug path for the MCF5272VM66.

Is the MCF5272VM66 still in active production?

The MCF5272VM66 is discontinued by NXP but remains available through authorized distributors and Aetrix Electronics' extended lifecycle program. NXP's official product change notification (PCN) ended manufacturing in 2012, and no second-source or replacement part has been designated. Aetrix maintains traceable inventory with full lot documentation and offers obsolescence mitigation services including last-time buy coordination, cross-reference analysis, and migration path support for legacy designs dependent on the MCF5272VM66.