NXP Semiconductors MCF5474VR266

Overview

MCF5474VR266 from Freescale Semiconductor is a ColdFire V4e core 32-bit microprocessor with 266 MHz peak core frequency, integrated DDR/SDR SDRAM controller, PCI 2.2 interface, and dual 10/100 Mbps Ethernet controllers - designed for high-performance networking and industrial control applications requiring deterministic real-time processing and multi-protocol I/O.

For engineers reviewing the MCF5474VR266 datasheet, MCF5474VR266 pinout, MCF5474VR266 application, or MCF5474VR266 equivalent, this page delivers verified technical context, validated package mapping (TEPBGA–388), confirmed cache/MMU/FPU architecture, exact DDR/PCI/FlexBus timing boundaries, and two rigorously cross-referenced alternative microprocessors for migration or sourcing continuity.

Technical Context

The MCF5474VR266 implements a Harvard-architecture ColdFire V4e core with 32-Kbyte instruction and 32-Kbyte data caches, MMU, and IEEE-754-compliant double-precision FPU - enabling deterministic execution of complex control algorithms and floating-point signal processing. Its internal XLB bus arbiter supports split transactions between multiple masters including the dual FECs, USB 2.0 device controller, and DSPI modules.

System-level integration includes a 32-Kbyte on-chip SRAM with bandwidth arbitration, SIU with four 32-bit GP timers and PWM capability, and a programmable PLL accepting 30–66.67 MHz input to generate 266 MHz core clock (1:4 ratio) while maintaining synchronous 133 MHz XLB/DDR bus operation - all within 1.5V core, 2.5V DDR I/O, and 3.3V peripheral voltage domains.

Key Specifications

Pinout & Package

TEPBGA–388 package, 27 mm × 27 mm body, 1.27 mm ball pitch, RoHS-compliant. Pinout defined in MCF5475EC Rev. 4, Section 17 (Case Drawing) and Figure 31 (388-pin BGA Case Outline).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF5474VR266, MCF5475VR266 offers drop-in compatibility with added security and thermal headroom, while MPC8313EVRAGDB provides higher clock rate and PCIe but requires full software re-architecture and PCB redesign.

Availability

MCF5474VR266 is available at Aetrix Electronics and suitable for industrial gateways, secure network appliances, medical imaging controllers, and telecom baseband processors requiring stable component supply and long-term lifecycle support.

Supply support for MCF5474VR266 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

Freescale Semiconductor (now part of NXP Semiconductors since 2015) was a pioneer in embedded microprocessors, specializing in high-performance, low-power architectures for automotive, industrial, and networking markets.

The MCF5474VR266 belongs to the ColdFire MCF547x family - designed specifically for deterministic real-time control with integrated communications peripherals, memory controllers, and hardware acceleration to reduce system BOM and simplify board design.

FAQ

What is the maximum DDR SDRAM clock frequency supported by the MCF5474VR266?

The MCF5474VR266 DDR SDRAM controller supports 66–133 MHz operation, with 133 MHz corresponding to the maximum 266 MHz core clock (1:2 XLB-to-core ratio). This enables 1.5 GB/s theoretical bandwidth on a 32-bit bus, sufficient for real-time video buffering and high-speed data acquisition applications using the MCF5474VR266.

Does the MCF5474VR266 include an on-chip memory management unit (MMU)?

Yes, the MCF5474VR266 integrates a full MMU supporting demand-paged virtual memory - a key requirement for running Linux or other full-featured RTOSes. This MMU works in conjunction with the 32-Kbyte instruction and 32-Kbyte data caches and separate 32-entry translation lookahead buffers, enabling robust multitasking and memory protection in safety-critical deployments of the MCF5474VR266.

Can the MCF5474VR266 operate with a 3.3 V DDR SDRAM interface?

No - the MCF5474VR266 DDR I/O pins require SDVDD = 2.5 V ± 0.2 V (Table 4, DC Electrical Specifications). Using 3.3 V violates absolute maximum ratings and risks permanent damage. The device supports only SSTL_2 (2.5 V) signaling for DDR mode; SDR operation also mandates 2.5 V for compatibility with the MCF5474VR266's I/O voltage domain.

What is the purpose of the USBRBIAS resistor in MCF5474VR266 designs?

The USBRBIAS resistor (9.1 kΩ ±1%, placed adjacent to USBRBIAS pin per Figure 7) sets the reference current for the on-chip USB 2.0 PHY's differential receiver threshold. Its precise value ensures correct signal detection across voltage/temperature variations - critical for reliable high-speed (480 Mbps) USB device enumeration and data transfer in MCF5474VR266-based host-peripheral systems.

Is the MCF5474VR266 pin-compatible with other MCF547x variants like MCF5472 or MCF5473?

Yes - all MCF547x devices (MCF5470 through MCF5475) share identical TEPBGA–388 pinout and package dimensions (27 mm × 27 mm). Functional differences (e.g., number of FECs, crypto module inclusion, temperature grade) are implemented internally; PCB layout and socketing for MCF5474VR266 are fully reusable across the family, simplifying variant selection and second-sourcing.