NXP Semiconductors MCF5272VF66R2J

Overview

MCF5272VF66R2J from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V2 integrated microprocessor with 66 MHz CPU clock, on-chip 8 KB SRAM, 16 KB instruction cache, and integrated Ethernet MAC, USB 1.1 device controller, SDRAM controller, QSPI, UARTs, PWM, and DMA. It targets network-attached industrial controllers requiring deterministic real-time I/O and wired connectivity.

For engineers reviewing the MCF5272VF66R2J datasheet, MCF5272VF66R2J pinout, MCF5272VF66R2J application, or MCF5272VF66R2J equivalent, key selection criteria include its integrated 10/100 Mbps Ethernet PHY interface support, USB device-only operation, ColdFire V2 core instruction set compatibility, and 208-pin PQFP package with 3.3 V I/O and 2.5 V core supply requirements.

Technical Context

The MCF5272VF66R2J implements the ColdFire V2 core with hardware MAC unit, 5-stage pipeline, and supervisor/user mode execution. It integrates a System Integration Module (SIM) managing clock generation, reset, power control, and interrupt routing across 64 vectored interrupts.

Its peripheral set includes a full-duplex 10/100 Mbps Ethernet MAC with MII interface, USB 1.1 device controller supporting up to 16 endpoints, SDRAM controller for up to 128 MB external memory, and QSPI supporting master/slave SPI and queued transfers with programmable delays.

Key Specifications

Pinout & Package

208-pin Plastic Quad Flat Package (PQFP), 28 × 28 mm body, 0.65 mm pitch, JEDEC MO-140AC compliant. Thermal pad exposed on underside for enhanced heat dissipation in industrial ambient conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF5272VF66R2J, the MCF5271VF66R2J reduces feature count for cost-sensitive ISDN-only nodes, while the MCF5282CVM66 adds CAN and memory resources for automotive applications - neither offers pin-compatible replacement, and PCB redesign is required for migration.

Availability

MCF5272VF66R2J is available at Aetrix Electronics and suitable for industrial Ethernet gateways, USB device endpoints, ISDN telephony gateways, and real-time motor control nodes requiring stable component supply throughout extended product lifecycles.

Supply support for MCF5272VF66R2J 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 solutions for automotive, industrial, and IoT markets.

The MCF5272VF66R2J belongs to the ColdFire V2 microprocessor family designed for cost-sensitive, wired-communication-intensive embedded systems requiring integrated Ethernet, USB, and ISDN interfaces without external protocol accelerators.

FAQ

What is the core architecture of the MCF5272VF66R2J?

The MCF5272VF66R2J uses the ColdFire V2 32-bit RISC core with a 5-stage pipeline, hardware multiply-accumulate (MAC) unit, and supervisor/user privilege modes. It executes the ColdFire instruction set compatible with earlier MCF5206 derivatives but adds enhanced debug and peripheral integration. The core operates at up to 66 MHz and supports both big-endian and little-endian data ordering under software control.

Does the MCF5272VF66R2J include an integrated Ethernet PHY?

No, the MCF5272VF66R2J integrates only the Ethernet MAC layer and requires an external PHY chip connected via the MII interface. Signals such as ETXD[3:0], ERXD[3:0], TX_EN, RX_DV, and CRS are brought out to dedicated pins. Designers must implement proper termination, impedance control, and clock routing per IEEE 802.3 specifications when interfacing with PHYs like the DP83848 or LAN8720.

Can the MCF5272VF66R2J operate as a USB host?

No, the MCF5272VF66R2J implements only a USB 1.1 device controller and cannot function as a USB host. It supports up to 16 endpoints and standard USB classes including HID, CDC ACM, and mass storage when enumerated by a host PC or embedded host controller. For host capability, designers must select a different ColdFire variant such as the MCF548x series or add an external USB host controller IC.

What memory types does the MCF5272VF66R2J support externally?

The MCF5272VF66R2J supports 32-bit SDRAM up to 128 MB via its integrated SDRAM controller, and asynchronous memory (SRAM, Flash, ROM) through the Chip-Select Module with programmable timing parameters. It does not support DDR SDRAM or NAND/NOR flash with built-in ECC. External memory interfaces require careful PCB layout for signal integrity, especially for SDRAM clock and DQS routing.

Is JTAG debugging supported on the MCF5272VF66R2J?

Yes, the MCF5272VF66R2J fully supports IEEE 1149.1 JTAG boundary-scan and debug functionality through dedicated TDI, TDO, TCK, TMS, and TRST pins. It enables real-time instruction tracing, breakpoint setting, register inspection, and flash programming using standard BDM (Background Debug Mode) tools such as the P&E Multilink or SEGGER J-Link with ColdFire firmware support.