NXP Semiconductors MCF51JE256VML

Overview

MCF51JE256VML from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller featuring a 50.33 MHz CPU, 256 KB on-chip Flash, 32 KB RAM, USB On-The-Go interface, and integrated 12-bit ADC/DAC - designed for low-power industrial control, remote sensing, and embedded USB host/device applications.

For engineers reviewing the MCF51JE256VML datasheet, MCF51JE256VML pinout, MCF51JE256VML application, or MCF51JE256VML equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options - all grounded in the official Rev. 4 datasheet and Freescale/NXP documentation.

Technical Context

The MCF51JE256VML implements the ColdFire Instruction Set Revision C (ISA_C) with hardware MAC support for signed/unsigned integer and fractional arithmetic. Its Multipurpose Clock Generator (MCG) integrates PLL and FLL modes, enabling precise CPU clock synthesis up to 50 MHz with ±0.5% to –1% deviation over –40°C to 105°C.

It features dual independent 128 KB Flash arrays supporting concurrent execution and programming, ultra-low-power stop3 mode with 6 µs wake-up, and full peripheral operation in stop3 including ADC, PRACMP, and TOD. The Mini-FlexBus provides external memory expansion with programmable chip selects and address/data multiplexing.

Key Specifications

Pinout & Package

104-pin MAPBGA (10 mm × 10 mm), ball pitch 0.8 mm, RoHS-compliant, thermal pad exposed on underside per Freescale Package Drawing SPO-001A.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF51JE256VML, the K22FN512VLH12 offers superior computational capability but adds system complexity with external USB components, while the MCF52259CAG80 delivers higher performance at the cost of increased active power and loss of key low-power features like stop3 and TOD.

Availability

MCF51JE256VML is available at Aetrix Electronics and suitable for industrial sensor nodes, USB-capable HMI terminals, IR remote hubs, and low-power PLC I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for MCF51JE256VML 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 acquired Freescale in 2015 and maintains full support for the ColdFire portfolio, including documentation, tools, and long-term supply commitments for industrial-grade MCUs.

The MCF51JE256VML belongs to the ColdFire V1 microcontroller family - engineered for cost-sensitive, ultra-low-power embedded applications demanding USB connectivity, analog integration, and robust industrial operation.

FAQ

What is the maximum operating frequency of the MCF51JE256VML?

The MCF51JE256VML achieves up to 50.33 MHz at supply voltages above 2.4 V and across the full industrial temperature range (–40°C to +105°C). At 2.1 V, it operates up to 40 MHz, and at 1.8 V, up to 20 MHz - enabling flexible power/performance trade-offs in battery-powered designs. This specification is confirmed in Section 1 of the Rev. 4 datasheet.

Does the MCF51JE256VML support USB device and host modes simultaneously?

Yes, the MCF51JE256VML implements full USB On-The-Go (OTG) functionality per USB Specification 2.0, allowing dynamic switching between device, host, and OTG roles. The USB_ID pin (PTF0) detects cable orientation, and the on-chip transceiver with integrated 3.3 V regulator enables direct connection to USB connectors without external components.

Can the MCF51JE256VML operate in ultra-low-power modes while retaining ADC functionality?

Yes - the MCF51JE256VML supports stop3 mode where the 12-bit ADC remains fully functional, including conversion triggering via PDB, operation with internal bandgap reference, and wake-up on completion. This is explicitly documented in Sections 3.6 and 3.9 of the Rev. 4 datasheet for –40°C to +105°C operation.

What debugging interface does the MCF51JE256VML provide?

The MCF51JE256VML integrates ColdFire DEBUG_Rev_B+ with single-wire Background Debug Mode (BDM) via the PTD0/BKGD/MS pin. It supports real-time debug with six hardware breakpoints (four PC, one address, one data) and an on-chip trace buffer with programmable start/stop conditions - all detailed in Section 5 of the Rev. 4 datasheet.

Is the MCF51JE256VML pin-compatible with other MCF51JE variants?

No - the MCF51JE256VML uses a 104-pin MAPBGA package, while MCF51JE256VLH is 100-pin LQFP and MCF51JE256VLL is 80-pin LQFP. Pin functions differ significantly across packages (e.g., FB_AD[19:0] and RGPIO assignments), and the 104-pin variant includes unique signals like PTG1/USB_SESSEND and PTG4/USB_SESSVLD not present in smaller packages.