NXP Semiconductors MCF51JM128VLH

Overview

MCF51JM128VLH from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller designed for industrial control and automotive body electronics. It integrates 128 KB flash, 16 KB SRAM, USB OTG, CAN 2.0B, cryptographic acceleration (CAU), RNGA, 12-bit ADC with 12 channels, and operates up to 50.33 MHz at 2.7–5.5 V. It serves as a drop-in upgrade path from MC9S08JM60 in motor control and gateway applications.

For engineers reviewing the MCF51JM128VLH datasheet, MCF51JM128VLH pinout, MCF51JM128VLH application, or MCF51JM128VLH equivalent, key selection criteria include its 64-pin LQFP package, -40°C to +105°C temperature grade, integrated MSCAN and USBOTG dual-role capability, CAU/RNGA security acceleration, and support for Stop3 low-power mode with RTC and ADC operation.

Technical Context

The MCF51JM128VLH implements the ColdFire V1 core (ISA_C) with background debug module (BDM) and executes at up to 50.33 MHz. Its multipurpose clock generator (MCG) supports FLL/PLL multiplication of crystal (1–16 MHz) or internal reference sources, enabling flexible system timing across voltage and temperature ranges.

It features dual serial peripheral interfaces (SPI1/SPI2) with double-buffered TX/RX, two SCIs supporting LIN master/slave break generation, and two I²C modules with 100 kbps capability. The MSCAN controller provides five receive buffers with FIFO, three prioritized transmit buffers, and programmable identifier filtering (2×32-bit, 4×16-bit, or 8×8-bit).

Key Specifications

Pinout & Package

Package: 64-pin LQFP, 10 mm × 10 mm, 0.5 mm pitch, RoHS-compliant, rated for –40°C to +105°C ambient.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit microcontroller applications.

Compared with MCF51JM128VLK, MCF51JM128VLH saves board area and routing complexity while retaining full CAN, USBOTG, and cryptographic acceleration; versus MCF51JM64VLH, it doubles flash capacity for future-proofing bootloader, OTA stack, and diagnostic logging without changing layout.

Availability

MCF51JM128VLH is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drive gateways, and secure IoT edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MCF51JM128VLH 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 delivering secure, scalable solutions for automotive, industrial, IoT, and mobile applications, with deep heritage in microcontroller innovation.

The MCF51JM128VLH belongs to NXP's ColdFire V1 microcontroller family, engineered specifically for migration from 8-bit MCUs in cost-sensitive, safety-aware embedded systems requiring integrated CAN, USB, and hardware security acceleration.

FAQ

What is the maximum operating frequency and voltage range for the MCF51JM128VLH?

The MCF51JM128VLH operates at up to 50.33 MHz across a supply voltage range of 2.7 V to 5.5 V. This wide voltage tolerance supports direct integration into 3.3 V and 5 V systems without level-shifting, and its performance is characterized over the full –40°C to +105°C industrial temperature range. The ColdFire V1 core delivers 0.76 Dhrystone MIPS per MHz when executing from flash memory.

Does the MCF51JM128VLH support USB On-The-Go functionality, and what are its capabilities?

Yes, the MCF51JM128VLH integrates a full-speed USB OTG dual-role controller compliant with USB 2.0 and 1.1 specifications. It supports 16 bidirectional endpoints with double buffering, control/bulk/interrupt/isochronous transfers in both device and host modes, and includes an on-chip 3.3 V regulator and pull-up resistors. This eliminates external USB PHY components and enables direct PC connectivity or peripheral hosting in compact designs.

How does the cryptographic acceleration unit (CAU) in the MCF51JM128VLH improve security-critical applications?

The CAU in the MCF51JM128VLH provides hardware-accelerated execution of DES, 3DES, AES (128/192/256), MD5, and SHA-1 algorithms. This offloads intensive crypto operations from the main CPU, reducing firmware signing latency by >10× and enabling real-time secure boot validation and encrypted firmware updates - critical for automotive BCMs and medical devices requiring regulatory compliance.

Can the MCF51JM128VLH operate its ADC and RTC in low-power modes, and which modes support this?

Yes, the MCF51JM128VLH supports ADC and RTC operation in Stop3 mode - its deepest low-power state with clocks gated to most peripherals. The RTC runs from a dedicated 1 kHz internal oscillator, enabling cyclic wake-up without external crystals, while the 12-bit ADC retains full functionality including auto-compare and internal temperature sensing. This capability is essential for battery-powered sensor nodes requiring event-triggered sampling.

What are the key differences between the MCF51JM128VLH and the MCF51JM128VLK package variants?

The MCF51JM128VLH uses a 64-pin LQFP (10 mm × 10 mm), whereas the MCF51JM128VLK uses an 80-pin LQFP (14 mm × 14 mm). The VLK variant provides 17 additional GPIOs and two extra ADC input channels (14 total vs. 12), but both share identical core performance, memory, USBOTG, MSCAN, CAU, RNGA, and temperature rating. Pin compatibility is not maintained between the two packages.