NXP Semiconductors MCF51JM128EVLD

Overview

MCF51JM128EVLD from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller designed for embedded control applications requiring cryptographic acceleration, CAN bus connectivity, and USB On-The-Go functionality. It integrates 128 KB flash, 16 KB SRAM, a 50.33 MHz CPU core, CAU/RNGA security accelerators, and operates across –40°C to +105°C in a 44-pin LQFP package.

For engineers reviewing the MCF51JM128EVLD datasheet, MCF51JM128EVLD pinout, MCF51JM128EVLD application, or MCF51JM128EVLD equivalent, this page delivers verified functional units, validated pin assignments for the 44 LQFP variant, confirmed USBOTG/CAN/ADC timing behavior, and real-world design implications of its Rapid GPIO, Stop3-mode operation, and cryptographic co-processor.

Technical Context

The MCF51JM128EVLD implements the ColdFire V1 ISA_C instruction set with background debug module (BDM) support and executes at up to 50.33 MHz across 2.7–5.5 V. Its architecture includes dual SPI, dual SCI, two I²C modules, and a dedicated MSCAN controller compliant with CAN 2.0A/B.

It features a multipurpose clock generator (MCG) supporting FLL/PLL modes, an on-chip 3.3 V USB regulator, and hardware-accelerated DES/3DES/AES/SHA-1 via the CAU - all operating in Stop3 low-power mode alongside RTC, ADC, and ACMP.

Key Specifications

Pinout & Package

Package: 44-pin LQFP, 10 mm × 10 mm, 0.8 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with K22FN512VLH12 and MCF52259CAG80, the MCF51JM128EVLD offers optimal balance of CAN integration, cryptographic acceleration, and compact 44-pin packaging for cost-sensitive, safety-critical embedded nodes where ARM migration is unnecessary and Ethernet is unused.

Availability

MCF51JM128EVLD is available at Aetrix Electronics and suitable for automotive body control, industrial fieldbus nodes, secure IoT gateways, and medical handheld devices requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MCF51JM128EVLD 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 markets, with deep heritage in microcontroller innovation through its acquisition of Freescale.

The MCF51JM128EVLD belongs to the ColdFire V1 microcontroller product line, engineered for seamless 8-bit MCU upgrades (e.g., MC9S08JM60) and targeting cost-optimized, security-aware embedded control in harsh environments.

FAQ

What is the maximum operating frequency of the MCF51JM128EVLD?

The MCF51JM128EVLD operates at up to 50.33 MHz across its full voltage range (2.7 V to 5.5 V). This frequency is achievable with the internal MCG configured in PLL mode using an external crystal or internal reference, and it directly determines instruction throughput, peripheral timing budgets, and maximum baud rates for SCI/SPI interfaces. The V1 ColdFire core delivers 0.76 Dhrystone MIPS per MHz when executing from flash memory.

Does the MCF51JM128EVLD support CAN communication natively?

Yes, the MCF51JM128EVLD includes a fully integrated MSCAN controller compliant with CAN 2.0A/B protocol. It features five receive buffers with FIFO, three prioritized transmit buffers, flexible identifier filtering (2×32-bit, 4×16-bit, or 8×8-bit), and programmable wake-up with low-pass filtering - all implemented in silicon without requiring external CAN transceivers or protocol stacks.

What cryptographic functions does the CAU in the MCF51JM128EVLD accelerate?

The Cryptographic Acceleration Unit (CAU) in the MCF51JM128EVLD provides hardware acceleration for DES, 3DES, AES (128/192/256-bit), MD5, and SHA-1 algorithms. This co-processor significantly reduces CPU load and execution time for encryption, decryption, hashing, and digital signature operations - essential for secure boot, firmware authentication, and TLS session establishment in the MCF51JM128EVLD.

How many ADC channels does the MCF51JM128EVLD have, and what is their resolution?

The MCF51JM128EVLD integrates a 12-bit analog-to-digital converter with up to 12 input channels (ADP0–ADP11). It supports 12-, 10-, or 8-bit right-justified output formats, single or continuous conversion modes, and asynchronous hardware triggering. The ADC operates in Stop3 low-power mode and includes an internal temperature sensor for system-level thermal monitoring.

Is the MCF51JM128EVLD pin-compatible with other members of the MCF51JM family?

No, the MCF51JM128EVLD is not pin-compatible with 64-pin or 80-pin variants of the MCF51JM family. It uses a 44-pin LQFP package with a unique pin assignment defined in Table 4 of the datasheet, where only 33 pins are assigned (vs. 48 in 64-pin or 64 in 80-pin packages). Signal mapping, peripheral availability (e.g., reduced TPM channels), and I/O count differ significantly - PCB redesign is required for migration between package variants.