NXP Semiconductors SCF5249VM140

Overview

SCF5249VM140 from Freescale Semiconductor is a ColdFire® V2 core-based integrated microprocessor with 140 MHz maximum CPU frequency, 96 KB on-chip SRAM, and integrated DRAM controller, QSPI, dual UART, I²C, ADC, and audio interfaces - deployed in industrial media gateways and embedded digital audio systems.

For engineers reviewing the SCF5249VM140 datasheet, SCF5249VM140 pinout, SCF5249VM140 application, or SCF5249VM140 equivalent, key selection considerations include its 160-ball MAPBGA package, PLL-based clock synthesis (up to 280 MHz internal bus), EMAC acceleration for real-time signal processing, and support for SDRAM, SmartMedia, and CD-ROM encoder/decoder functions.

Technical Context

The SCF5249VM140 implements the ColdFire V2 instruction set architecture with a 5-stage pipeline, 4-KB instruction cache, and enhanced multiply-accumulate (EMAC) unit optimized for fixed-point DSP operations. It integrates a configurable DRAM controller supporting SDRAM and PSRAM, plus dedicated serial audio and IEC958 digital audio interfaces.

System-level timing is managed by an on-chip PLL with programmable multiplication (×1 to ×4) and division ratios, enabling flexible clock generation for CPU, bus, and audio domains. The device supports external bus arbitration, JTAG/BDM debug, and secure system reset with watchdog timer and reset status register.

Key Specifications

Pinout & Package

SCF5249VM140 is housed in a 160-ball MAPBGA package (12 mm × 12 mm, 0.8 mm pitch), thermally enhanced for sustained operation in industrial ambient conditions. Ball assignments follow JEDEC MO-251 standard with defined power/ground distribution and signal grouping per functional block.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SCF5249VM140, MCF52259CAG80 trades CD-ROM/audio acceleration for USB host capability at reduced clock speed, while MCF54418VKN80 adds display and networking peripherals but demands full hardware requalification - neither offers pin compatibility or identical feature mapping.

Availability

SCF5249VM140 is available at Aetrix Electronics and suitable for industrial media gateways, digital audio players, optical storage controllers, and embedded HMI terminals requiring stable component supply across extended product lifecycles.

Supply support for SCF5249VM140 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 ColdFire family, including SCF5249VM140, was designed for cost-sensitive, high-performance embedded applications demanding real-time processing, rich peripheral integration, and low-power operation - particularly in audio, media, and industrial control.

FAQ

What is the maximum operating frequency of the SCF5249VM140?

The SCF5249VM140 operates at a maximum CPU frequency of 140 MHz, with its internal bus running up to 280 MHz when the PLL is configured for ×2 multiplication. This frequency is specified under industrial temperature range (–40°C to +85°C) and 3.3 V ±0.3 V supply conditions, as confirmed in Section 21 of the MCF5249UM/D Rev. 4.0 datasheet.

Does the SCF5249VM140 include on-chip memory, and how is it allocated?

Yes, the SCF5249VM140 integrates 96 KB of on-chip SRAM, mapped as unified memory accessible by both CPU and DMA. It is not partitioned into separate instruction/data banks, allowing flexible allocation for boot code, stack, heap, and real-time buffers - a key advantage over external-memory-only microcontrollers.

Can the SCF5249VM140 directly interface with SDRAM, and what configurations are supported?

Yes, the SCF5249VM140 includes a dedicated DRAM controller supporting 16-bit and 32-bit SDRAM devices up to 128 MB total address space. It implements auto-refresh, burst page mode, and continuous page mode per JEDEC standards, with programmable timing registers for setup/hold/refresh cycles - verified in Section 7 of the MCF5249UM/D manual.

What audio interfaces does the SCF5249VM140 provide, and are they hardware-accelerated?

The SCF5249VM140 provides three hardware-accelerated audio interfaces: Serial Audio Interface (SAI) for I²S/PCM, IEC958 digital audio transmitter/receiver for SPDIF, and a dedicated CD-ROM encoder/decoder block. These operate independently of the CPU core, enabling concurrent audio streaming and system control without software overhead.

Is JTAG debugging supported on the SCF5249VM140, and what tools are compatible?

Yes, the SCF5249VM140 supports IEEE 1149.1 JTAG boundary-scan and BDM (Background Debug Mode) via dedicated TDI/TDO/TCK/TMS/TRST pins. It is fully compatible with Freescale's CodeWarrior Development Studio and third-party debug probes such as P&E Micro's Cyclone MAX and Segger J-Link - confirmed in Sections 1.6.23 and 2.20 of the user manual.