NXP Semiconductors MCF5272CVM66J

Overview

MCF5272CVM66J 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 MCF5272CVM66J datasheet, MCF5272CVM66J pinout, MCF5272CVM66J application, or MCF5272CVM66J equivalent, key selection criteria include its integrated 10/100 Mbps Ethernet PHY interface support via PLIC, USB device-only capability, ColdFire V2 core instruction set compatibility, and 256-pin PQFP package with 3.3 V I/O and 2.5 V core supply requirements.

Technical Context

The MCF5272CVM66J implements the ColdFire V2 core with hardware MAC unit, 5-stage pipeline, and supervisor/user mode protection. It integrates a System Integration Module (SIM) managing clock generation, reset, and power control, alongside dedicated modules for Ethernet (MII interface), USB (full-speed device only), and PLIC for ISDN/GCI physical layer interfacing.

Its memory subsystem includes 8 KB on-chip SRAM, 16 KB instruction cache, and external bus interface supporting SDRAM, ROM, and peripheral chip-select mapping. The QSPI module supports queued serial transfers with programmable timing, while four independent timer channels provide input capture, output compare, and PWM generation with 16-bit resolution.

Key Specifications

Pinout & Package

256-pin PQFP (Plastic Quad Flat Package), 28 mm × 28 mm body, 0.65 mm lead pitch, JEDEC MS-026AC 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 MCF5272CVM66J, the MCF5271CVM66J reduces cost and power by removing Ethernet and USB, while the MCF5282CVM66 extends functionality with CAN and security - both require PCB layout revision and software adaptation due to peripheral and pinout differences.

Availability

MCF5272CVM66J is available at Aetrix Electronics and suitable for industrial Ethernet gateways, ISDN terminal adapters, networked HVAC controllers, and USB-enabled HMIs requiring stable component supply across extended production lifecycles.

Supply support for MCF5272CVM66J 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, now specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The MCF5272CVM66J belongs to the ColdFire® V2 microprocessor family designed for cost-effective, integrated control in wired network edge devices - emphasizing deterministic real-time performance, low-power operation, and minimal external component count.

FAQ

Does the MCF5272CVM66J support USB host mode?

No, the MCF5272CVM66J implements only a USB 1.1 full-speed device controller. It cannot act as a USB host or enumerate external peripherals like keyboards or storage devices. Its USB interface is strictly for connecting to a host PC or USB hub in peripheral mode. Designers requiring host capability must select a different ColdFire variant such as the MCF54xx series or add an external USB host controller IC.

What is the maximum SDRAM capacity supported by the MCF5272CVM66J?

The MCF5272CVM66J SDRAM controller supports up to 128 MB of external memory using standard x16 or x32 SDRAM devices. This is achieved through configurable row/column address bit allocation and bank selection logic within the SDCR and SDTR registers. The controller handles all refresh cycles automatically, relieving the CPU of timing-critical maintenance tasks.

Is the MCF5272CVM66J pin-compatible with other ColdFire microprocessors?

No, the MCF5272CVM66J is not pin-compatible with other ColdFire families including MCF5206, MCF5223x, or MCF5282. Its 256-pin PQFP package and signal assignment - especially for Ethernet MII, PLIC, and QSPI - are unique to the MCF5272 family. Migration requires PCB redesign and firmware adaptation even within the same ColdFire architecture lineage.

Does the MCF5272CVM66J include a hardware floating-point unit?

No, the MCF5272CVM66J ColdFire V2 core does not include a hardware FPU. Floating-point operations are performed in software using the integer ALU and MAC unit. For applications requiring high-precision math, developers should use optimized fixed-point libraries or consider ColdFire V4-based parts like the MCF547x series which offer optional FPU extensions.

What debug interface does the MCF5272CVM66J provide?

The MCF5272CVM66J provides IEEE 1149.1 JTAG (Test Access Port) for boundary-scan testing and on-chip debugging via the Background Debug Mode (BDM) protocol. It supports full-core visibility including register read/write, breakpoint setting, and memory inspection without halting real-time peripherals - essential for validating Ethernet and USB timing behavior during development.