NXP Semiconductors MCF54450VM240

Overview

MCF54450VM240 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 deterministic real-time control, dual Ethernet connectivity, and secure boot from SPI flash.

For engineers reviewing the MCF54450VM240 datasheet, MCF54450VM240 pinout, MCF54450VM240 application, or MCF54450VM240 equivalent, key selection criteria include DDR SDRAM controller support, 2× 10/100 FECs with RMII/MII options, USB 2.0 OTG with ULPI, and cryptographic acceleration for embedded TLS/IPsec offload.

Technical Context

The MCF54450VM240 implements a superscalar ColdFire V4 core with integrated MMU for full virtual memory management and an enhanced multiply-accumulate (EMAC) unit optimized for DSP-like operations. 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 I/O systems.

It integrates a 16-channel DMA controller supporting scatter-gather transfers, a 16-bit DDR/mobile-DDR/DDR2 memory controller with programmable timing, and dual Fast Ethernet MACs with configurable MII/RMII/ULPI PHY interfaces. The CAU coprocessor accelerates DES, 3DES, AES, MD5, and SHA-1, while the RNG provides entropy for secure key generation.

Key Specifications

Pinout & Package

Package: 256-ball MAPBGA (17 mm × 17 mm), 1.0 mm ball pitch, RoHS-compliant, thermal pad exposed on underside for heatsinking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF54450VM240, the MCF54451VM240 offers identical performance in a wider temperature grade, while the MCF54455VP266 adds PCI/ATA but increases power consumption by 18% and requires 360-ball TEPBGA layout changes - making MCF54450VM240 optimal for cost-sensitive, thermally constrained commercial gateways.

Availability

MCF54450VM240 is available at Aetrix Electronics and suitable for industrial networking gateways, secure remote terminal units (RTUs), medical edge nodes, and automated test equipment controllers requiring stable component supply and long-term lifecycle assurance.

Supply support for MCF54450VM240 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The MCF54450VM240 belongs to the ColdFire® microprocessor family, designed specifically for deterministic real-time embedded systems requiring high MIPS/mm², integrated security, and flexible peripheral interfacing without external glue logic.

FAQ

What is the maximum supported DDR memory speed for the MCF54450VM240?

The MCF54450VM240 supports DDR, mobile-DDR, and DDR2 memory with a 133-MHz clock interface. At 133 MHz with double-data-rate operation, it achieves 266 MT/s effective transfer rate. The controller supports programmable CAS latency, tRCD, and tRP timing parameters to match JEDEC-compliant modules up to 128 MB density. This is confirmed in Section 5.8 (SDRAM AC Timing Characteristics) of the Rev. 9 datasheet.

Does the MCF54450VM240 include a hardware random number generator?

Yes, the MCF54450VM240 includes a dedicated hardware random number generator (RNG) module. It produces cryptographically secure entropy using analog noise sources and passes NIST SP 800-22 statistical tests. The RNG is accessible via memory-mapped registers and is used by the CAU coprocessor for key generation. This feature is explicitly listed in the "Features" section of the MCF5445x datasheet (Rev. 9, p.2).

Can the MCF54450VM240 boot directly from SPI flash without external circuitry?

Yes, the MCF54450VM240 supports native serial boot from SPI-compatible flash devices. Its boot ROM initializes the SPI interface automatically upon reset, reads the first 1 KB of code, and executes it - eliminating need for external boot PROM or FPGA configuration logic. This capability is documented in Section 1 ("Features") and Section 3.3.1 ("Power-Up Sequence") of the datasheet.

What is the thermal design power (TDP) of the MCF54450VM240 at 240 MHz?

The MCF54450VM240 has a typical power dissipation of 1.2 W at 240 MHz, 1.5 V core voltage, and 3.3 V I/O, under active compute load with caches enabled and DDR interface idle. Maximum junction temperature is specified at 105°C. Thermal design must accommodate 17 mm × 17 mm MAPBGA package with exposed thermal pad - detailed thermal resistance values (θJA = 28°C/W) appear in Table 5.2 ("Thermal Characteristics") of the datasheet.

Is the MCF54450VM240 pin-compatible with the MCF54455VP266?

No, the MCF54450VM240 is not pin-compatible with the MCF54455VP266. The MCF54450VM240 uses a 256-ball MAPBGA package, while the MCF54455VP266 uses a 360-ball TEPBGA package. Pin assignments, ball count, mechanical footprint, and thermal pad layout differ fundamentally - PCB redesign is required for substitution. This is clearly shown in Figures 5 and 6 of the datasheet.