NXP Semiconductors MCF5272VF66

Overview

MCF5272VF66 from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire® V2 integrated microprocessor with on-chip 64 KB SRAM, 16 KB instruction cache, and 66 MHz core clock. It integrates Ethernet MAC, USB 1.1 device controller, SDRAM controller, QSPI, UARTs, timers, PWM, and JTAG debug support. Used in industrial gateways and ISDN SOHO PABX systems requiring deterministic real-time control and wired connectivity.

For engineers reviewing the MCF5272VF66 datasheet, MCF5272VF66 pinout, MCF5272VF66 application, or MCF5272VF66 equivalent, key selection criteria include its integrated Fast Ethernet PHY interface timing, USB device-only operation mode, SDRAM burst access latency (9-1-1-1 page miss), ColdFire V2 instruction set compatibility, and 208-pin PQFP package with 3.3 V I/O and 2.5 V core supply.

Technical Context

The MCF5272VF66 implements the ColdFire V2 core with hardware MAC unit, 5-stage pipeline, and supervisor/user privilege modes. It executes from internal SRAM or external memory via 32-bit data/24-bit address bus, supports big-endian byte order, and includes IEEE 1149.1 JTAG for boundary-scan and debug.

Its System Integration Module (SIM) provides clock generation, power management, watchdog, and interrupt control. The integrated Ethernet module complies with IEEE 802.3 10/100 Mbps MAC layer and interfaces directly to external PHY via MII signals; USB operates strictly as a full-speed (12 Mbps) device controller without host capability.

Key Specifications

Pinout & Package

Package: 208-pin Plastic Quad Flat Package (PQFP), 28 × 28 mm, 0.65 mm pitch, JEDEC MO-140AC compliant. Thermal pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF5272VF66, MCF5282CVM66 offers greater code storage density but sacrifices ISDN support, while MPC8272CZQHBB delivers higher performance and protocol flexibility at the cost of ColdFire binary compatibility and increased power consumption.

Availability

MCF5272VF66 is available at Aetrix Electronics and suitable for industrial gateways, ISDN telephony systems, networked HMIs, and legacy field device servers requiring stable component supply and long-term lifecycle support.

Supply support for MCF5272VF66 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 and later the acquisition of Freescale Semiconductor in 2015.

The ColdFire family, including the MCF5272VF66, was designed for cost-sensitive, real-time embedded applications requiring integrated connectivity and deterministic performance without an MMU - targeting industrial control, communications, and networking edge devices.

FAQ

What is the core architecture and clock speed of the MCF5272VF66?

The MCF5272VF66 features a ColdFire V2 32-bit RISC core with a 5-stage pipeline and hardware MAC unit, operating at a maximum frequency of 66 MHz. It uses big-endian byte ordering and supports supervisor/user privilege modes. The core derives its clock from an external 33 MHz crystal via an internal PLL multiplier. This architecture delivers deterministic real-time performance suitable for industrial control and communication tasks in the MCF5272VF66.

Does the MCF5272VF66 include an integrated Ethernet PHY?

No, the MCF5272VF66 integrates only the IEEE 802.3-compliant Media Access Control (MAC) layer. It requires an external PHY device connected via the MII interface (MDIO, MDC, TX, RX signals). The MCF5272VF66 provides full MAC functionality including descriptor-based DMA, frame filtering, and statistics registers, but physical layer signaling and auto-negotiation must be handled externally. This separation allows flexible PHY selection in the MCF5272VF66 design.

Can the MCF5272VF66 operate as a USB host?

No, the MCF5272VF66 implements only a USB 1.1 full-speed (12 Mbps) device controller. It supports endpoint 0–7 with configurable FIFOs and descriptors but lacks host controller logic, root hub, or OTG capability. The MCF5272VF66 must be enumerated by an external USB host and cannot initiate transactions or manage other USB devices. Its USB interface is strictly peripheral-facing.

What memory resources are integrated into the MCF5272VF66?

The MCF5272VF66 integrates 64 KB of on-chip SRAM and a 16 KB instruction-only cache. It does not include embedded Flash or ROM. Code and data execute from SRAM or external memory mapped via its 32-bit data and 24-bit address bus. The SDRAM controller supports external memory expansion with programmable timing parameters. These memory resources define the real-time footprint and boot strategy for the MCF5272VF66.

What is the role of the PLIC module in the MCF5272VF66?

The Physical Layer Interface Controller (PLIC) in the MCF5272VF66 provides native GCI/IDL interface support for ISDN BRI lines, including HDLC encoding/decoding, B/D-channel framing, and sync delay management. It connects directly to SLIC devices and handles ISDN layer 1 signaling without CPU intervention. This dedicated hardware accelerates ISDN SOHO PABX and remote access applications in the MCF5272VF66, distinguishing it from general-purpose microprocessors.