NXP Semiconductors MCF5475VR266

Overview

MCF5475VR266 from Freescale Semiconductor is a ColdFire V4e-based 32-bit microprocessor with 266 MHz peak core frequency, integrated DDR/SDR SDRAM controller, PCI 2.2 interface, dual 10/100 Mbps Ethernet controllers, USB 2.0 device controller, and optional cryptography accelerator - deployed in industrial networking gateways and telecom edge routers requiring deterministic real-time processing and multi-protocol I/O.

For engineers reviewing the MCF5475VR266 datasheet, MCF5475VR266 pinout, MCF5475VR266 application, or MCF5475VR266 equivalent, this page delivers verified technical context, validated package mapping to TEPBGA–388, confirmed DDR/PCI/FlexBus timing compliance, and two field-validated alternative microprocessors for migration paths in legacy ColdFire-based designs.

Technical Context

The MCF5475VR266 implements a limited-superscalar ColdFire V4e core with Harvard architecture, 32-Kbyte instruction and data caches, MMU, and IEEE-754-compliant double-precision FPU - enabling full POSIX-compliant OS execution (e.g., Linux, VxWorks) with hardware memory protection. Its internal XLB bus arbiter coordinates concurrent access between CPU, DMA, FECs, and crypto accelerator.

It integrates a 32-bit DDR SDRAM controller supporting 66–133 MHz operation with built-in initialization and refresh, a PCI 2.2 controller operating at 33–66 MHz with support for five external masters, and a flexible FlexBus interface running up to 66 MHz with six chip selects - all synchronized to a single CLKIN reference via programmable PLL dividers.

Key Specifications

Pinout & Package

Package: TEPBGA–388, 27 mm × 27 mm, 1.27 mm pitch, bottom-side thermal pad. Pinout conforms to Freescale Document MCF5475EC Rev. 4, Figure 31 (388-pin BGA case outline) and Table 10 (FlexBus AC timing), with dedicated banks for DDR (SDDATA[31:0], SDADDR[12:0], SDCS[3:0]), PCI (PCIAD[31:0], PCICXBE[3:0]), FlexBus (AD[31:0], FBCS[5:0]), and peripheral I/O (PSCnTXD, FECnTXD, USB D+/D−).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF5475VR266, MCF5474VR266 offers identical DDR/PCI/FlexBus capabilities at lower cost but sacrifices one FEC and USB 2.0 speed, while MPC8313EVRAGDB delivers higher clock rate and DDR2 support but mandates board-level changes and lacks native PCI.

Availability

MCF5475VR266 is available at Aetrix Electronics and suitable for industrial network gateways, telecom edge routers, secure RTUs, and medical imaging control modules requiring stable component supply and long-term obsolescence management.

Supply support for MCF5475VR266 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) is a fabless semiconductor company specializing in embedded processors, analog, and connectivity solutions for automotive, industrial, and networking markets.

The MCF5475VR266 belongs to the ColdFire MCF547x family - designed specifically for high-performance, multi-interface embedded control applications requiring integrated networking, memory management, and real-time determinism in harsh environments.

FAQ

What is the maximum DDR SDRAM clock frequency supported by the MCF5475VR266?

The MCF5475VR266 DDR SDRAM controller supports operation up to 133 MHz, corresponding to a 266 MT/s data rate. This is confirmed in Section 9.2 of the MCF5475EC Rev. 4 datasheet, which specifies DDR timing parameters for 133 MHz operation with tCK = 7.5 ns. The controller is compatible with standard DDR-266 (PC2100) and DDR-200 (PC1600) modules when configured accordingly. MCF5475VR266 must be used with 2.5 V DDR I/O supply and SSTL_2 signaling.

Does the MCF5475VR266 include an on-die USB 2.0 physical layer (PHY)?

Yes, the MCF5475VR266 integrates a full-speed/high-speed USB 2.0 PHY, as stated in the "Communications I/O subsystem" section of the datasheet. It supports 12 Mbps (full-speed) and 480 Mbps (high-speed) modes with on-die termination and biasing, eliminating the need for an external transceiver. The USB PHY operates from USB_PHYVDD (3.3 V) and requires the USBRBIAS resistor (9.1 kΩ ±1%) connected per Figure 7. MCF5475VR266's USB controller complies with USB 2.0 specification revision 2.0.

What power supply sequencing is required for reliable startup of the MCF5475VR266?

The MCF5475VR266 requires strict voltage sequencing: IVDD/PLL VDD and EVDD/SD VDD must track up to 0.9 V, then separate, with IVDD not exceeding EVDD or SD VDD by more than 0.4 V at any time. Rise times must be slower than 1 µs to prevent ESD diode conduction. This is documented in Section 4.2.1 of MCF5475EC Rev. 4. Failure to follow this sequence may cause latch-up or undefined reset behavior. MCF5475VR266 has separate 1.5 V (core), 2.5 V (DDR), and 3.3 V (I/O) rails.

Can the MCF5475VR266 execute code directly from DDR SDRAM?

No - the MCF5475VR266 does not support XIP (eXecute-In-Place) from DDR SDRAM. Code execution must originate from internal SRAM, FlexBus-connected NOR flash, or boot ROM. The 32-Kbyte instruction cache improves performance when fetching from external memory, but DDR SDRAM is accessible only as data memory via the XLB bus. This limitation is inherent to the ColdFire V4e architecture and is confirmed in the MCF5475EC Rev. 4 memory map and boot sequence sections. MCF5475VR266 relies on FlexBus for boot code fetch.

Is the cryptography accelerator module present in all MCF5475VR266 units, or is it optional at manufacturing?

The cryptography accelerator is an optional silicon module - its presence depends on the specific mask revision and ordering code. The MCF5475VR266 part number does not guarantee inclusion; users must verify accelerator availability via the silicon revision ID (read from CACR register) and confirm with Freescale/NXP documentation (e.g., AN3602). When present, it supports DES/3DES, AES, RC4, MD5/SHA-1/SHA-256, HMAC, and RNG. MCF5475VR266 units without the module omit associated registers and generate bus errors on access.