NXP Semiconductors MCF54451VM240

Overview

MCF54451VM240 from NXP Semiconductors is a ColdFire® Version 4 microprocessor with MMU and EMAC, operating at up to 240 MHz core clock, delivering up to 370 Dhrystone 2.1 MIPS, featuring 16-KB instruction cache, 16-KB data cache, and 32-KB on-chip SRAM. It targets industrial networking gateways requiring dual 10/100 Ethernet MACs, DDR SDRAM interface, and cryptographic acceleration.

For engineers reviewing the MCF54451VM240 datasheet, MCF54451VM240 pinout, MCF54451VM240 application, or MCF54451VM240 equivalent, key selection considerations include its 256-pin MAPBGA package, 240 MHz performance tier within the MCF5445x family, support for booting from SPI flash/FRAM/EEPROM, and integrated crossbar switch enabling concurrent peripheral access.

Technical Context

The MCF54451VM240 integrates a ColdFire V4 core with memory management unit (MMU) and enhanced multiply-accumulate (EMAC) unit, supporting full virtual memory and real-time signal processing. Its crossbar switch (XBS) enables simultaneous bus master access to peripherals and RAM, eliminating arbitration bottlenecks in multi-threaded or DMA-heavy applications.

It includes a 16-channel DMA controller, 4 periodic interrupt timers (PIT), 4 32-bit timers with DMA support, and dual Fast Ethernet controllers (FEC) compliant with IEEE 802.3. The integrated cryptography acceleration unit (CAU) supports DES, 3DES, AES, MD5, and SHA-1 algorithms, while the random number generator (RNG) provides entropy for secure boot and TLS operations.

Key Specifications

Pinout & Package

Package: 256-ball MAPBGA (17 mm × 17 mm), RoHS-compliant, lead-free, with standard 1.0 mm ball pitch. Thermal pad on underside requires solder paste stencil design per NXP AN3940.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF54451VM240, MCF54455VP266 offers higher performance and PCI/ATA but requires board redesign, while MCF54450VM240 sacrifices CAU and dual FEC for lower BOM cost-making it viable only where those features are unused.

Availability

MCF54451VM240 is available at Aetrix Electronics and suitable for industrial networking gateways, secure RTUs, NAS appliances, and medical imaging edge processors requiring stable component supply and long-term lifecycle support.

Supply support for MCF54451VM240 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 >50 years of embedded systems expertise.

The MCF5445x ColdFire® microprocessor family was designed for high-performance, real-time embedded applications requiring Linux-capable processing, dual Ethernet, hardware crypto, and DDR memory support in industrial control and networking equipment.

FAQ

What is the maximum operating frequency of the MCF54451VM240?

The MCF54451VM240 operates at a maximum core clock frequency of 240 MHz, delivering up to 370 Dhrystone 2.1 MIPS. This speed is validated across the commercial temperature range (0°C to +70°C) and is supported by the on-chip PLL with external crystal or oscillator input. The MCF54451VM240 achieves this performance with its ColdFire V4 core, 16-KB instruction cache, and 16-KB data cache, making it suitable for demanding real-time embedded applications.

Does the MCF54451VM240 include hardware cryptographic acceleration?

Yes, the MCF54451VM240 includes a dedicated Cryptography Acceleration Unit (CAU) that supports DES, 3DES, AES, MD5, and SHA-1 algorithms. This hardware engine offloads encryption and hashing operations from the main CPU, significantly reducing latency and CPU utilization in security-critical applications such as IPsec, TLS, and secure boot. The CAU is accessible via memory-mapped registers and is fully integrated into the MCF54451VM240's AXI-like bus architecture.

What package type and pin count does the MCF54451VM240 use?

The MCF54451VM240 uses a 256-ball MAPBGA package measuring 17 mm × 17 mm with 1.0 mm ball pitch. This package is shared with the MCF54450 and is distinct from the 360-ball TEPBGA used by higher-tier variants like the MCF54455VP266. Pin assignments are documented in Section 4.2 of the MCF5445x datasheet, including FlexBus, DDR, FEC, USB, and debug interface signals-all mapped to this specific 256-ball layout.

Can the MCF54451VM240 boot from serial flash memory?

Yes, the MCF54451VM240 supports booting directly from SPI-compatible flash, EEPROM, and FRAM devices via its Serial Boot Facility (SBF). Boot mode is selected using BOOTMOD[1:0] pins, and the SBF handles initialization of the ColdFire core, PLL, and memory controllers before transferring control to user code. This eliminates the need for external boot ROM and simplifies field firmware updates in deployed systems using the MCF54451VM240.

How many Ethernet MACs are integrated into the MCF54451VM240?

The MCF54451VM240 integrates two independent 10/100 Fast Ethernet MACs (FEC0 and FEC1), each supporting MII and RMII physical layer interfaces. These MACs operate concurrently and are connected to the internal crossbar switch, enabling true dual-LAN functionality without external switches or bridges. Both MACs support IEEE 802.3 standards and can be configured for routing, bridging, or redundant link operation in applications built around the MCF54451VM240.