NXP Semiconductors MCF54455VP266

Overview

MCF54455VP266 from NXP Semiconductors is a ColdFire® Version 4 microprocessor with MMU and EMAC, operating at 266 MHz (410 Dhrystone 2.1 MIPS), featuring 16-KB instruction cache, 16-KB data cache, 32-KB on-chip SRAM, dual 10/100 Ethernet MACs, and a 32-bit PCI controller running at 66 MHz. It targets industrial networking gateways requiring deterministic real-time processing, secure boot, and multi-protocol connectivity.

For engineers reviewing the MCF54455VP266 datasheet, MCF54455VP266 pinout, MCF54455VP266 application, or MCF54455VP266 equivalent, key selection criteria include DDR2/DDR/mobile-DDR memory controller support, hardware cryptographic acceleration (DES/3DES/AES/MD5/SHA-1), ULPI-enabled USB 2.0 OTG, and dual-FEC timing compliance for IEEE 802.3u Fast Ethernet implementations.

Technical Context

The MCF54455VP266 integrates a ColdFire V4 core with integrated MMU for full virtual memory management and an enhanced multiply-accumulate unit (EMAC) optimized for signal processing. Its crossbar switch (XBS) enables concurrent access to peripherals and RAM by multiple bus masters-including CPU, DMA, PCI, and USB-eliminating arbitration bottlenecks in high-throughput embedded systems.

It supports flexible boot options from SPI-compatible flash, EEPROM, or FRAM, and includes a dedicated cryptography acceleration unit (CAU) that offloads symmetric encryption, hashing, and random number generation. The 16-channel DMA controller supports scatter-gather transfers across all major peripherals including DSPI, SSI, UARTs, FECs, and ATA.

Key Specifications

Pinout & Package

Package: 360-ball TEPBGA (23 mm × 23 mm, 1.0 mm pitch). Pin assignments conform to Figure 6 in Rev. 9 (04/2021) datasheet, supporting full peripheral functionality including dual FEC, PCI, USB OTG, ATA, and DDR2 interfaces.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF54455VP266, MCF54454VP266 removes ATA while preserving all other capabilities - ideal for cost-sensitive designs without local mass storage. MPC8313EVRAGDB offers higher clock rate and different crypto architecture but lacks PCI and ColdFire's deterministic interrupt latency, making it less suitable for industrial motion control.

Availability

MCF54455VP266 is available at Aetrix Electronics and suitable for industrial network gateways, secure edge routers, PCI-based motion controllers, and multi-protocol HMI platforms requiring stable component supply across extended product lifecycles.

Supply support for MCF54455VP266 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 leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in microcontrollers, processors, and wireless technologies.

The MCF54455VP266 belongs to the ColdFire® microprocessor family designed specifically for deterministic real-time embedded applications demanding high performance, rich peripheral integration, and hardware-assisted security - especially in industrial automation and network infrastructure.

FAQ

What is the maximum DDR2 memory bandwidth supported by the MCF54455VP266?

The MCF54455VP266 integrates a 16-bit DDR2 controller operating at 133 MHz, delivering up to 2.1 GB/s peak theoretical bandwidth (16 bits × 133 MHz × 2 transfers/cycle). Real-world sustained bandwidth depends on SDRAM timing parameters, board layout quality, and memory density; NXP's reference design achieves >1.6 GB/s using Micron MT47H64M16HR-37E.

Does the MCF54455VP266 support secure boot from external SPI flash?

Yes, the MCF54455VP266 supports secure boot from SPI-compatible flash devices via its serial boot facility (SBF). Boot ROM verifies image integrity using CRC-32 before execution; optional CAU-based signature verification can be implemented in second-stage bootloader. The MCF54455VP266 does not include immutable root-of-trust hardware, so full chain-of-trust requires external secure element or software-enforced checks.

Can the MCF54455VP266 operate in PCI target mode to interface with an x86 host processor?

Yes, the MCF54455VP266's 32-bit PCI controller supports both master and target modes. In target mode, it responds to configuration reads/writes and memory-mapped I/O requests from a host CPU. Configuration space is accessible via PCI_CFG_ADDR/PCI_CFG_DATA registers; BAR sizing and decoding must be configured in software prior to enumeration. Target mode operation requires proper PCI clock synchronization and reset sequencing per PCI Local Bus Specification v2.3.

How many independent Ethernet PHY interfaces does the MCF54455VP266 provide?

The MCF54455VP266 provides two fully independent Fast Ethernet MACs (FEC0 and FEC1), each supporting MII, RMII, and ULPI physical layer interfaces. Each MAC has dedicated MDIO/MDC pins and separate RX/TX clock domains, enabling simultaneous operation with different PHY types - for example, FEC0 driving a standard MII PHY and FEC1 using ULPI for a low-pin-count USB-attached PHY.

What thermal management requirements apply to the MCF54455VP266 in continuous 266-MHz operation?

The MCF54455VP266 in 360 TEPBGA package requires a minimum 4-layer PCB with dedicated internal ground/power planes and ≥4 thermal vias under the die pad. At 266 MHz with full peripheral activity, junction temperature must remain ≤105°C. NXP recommends a 15°C/W heatsink for ambient temperatures up to 70°C; thermal pad soldering to the PCB ground plane is mandatory per datasheet Section 7 (Package Information).