NXP Semiconductors MCF51JM32EVLD

Overview

MCF51JM32EVLD from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller designed for embedded control applications requiring cryptographic acceleration and USB On-The-Go connectivity. It integrates 32 KB flash, 16 KB SRAM, a 50.33 MHz CPU core, MSCAN interface, and CAU/RNGA security accelerators in a 44-pin LQFP package rated for –40°C to +105°C operation.

For engineers reviewing the MCF51JM32EVLD datasheet, MCF51JM32EVLD pinout, MCF51JM32EVLD application, or MCF51JM32EVLD equivalent, key selection criteria include its 44-pin LQFP footprint, CAU-enabled AES/SHA-1 acceleration, USBOTG dual-role support with on-chip 3.3 V regulator, and CAN 2.0B compliance - all critical for secure industrial gateways and automotive body controllers.

Technical Context

The MCF51JM32EVLD implements the ColdFire V1 ISA_C instruction set with background debug module (BDM) and executes at up to 50.33 MHz across 2.7–5.5 V supply. Its multipurpose clock generator (MCG) supports FLL/PLL modes with internal reference trimming (0.2% resolution), enabling precise timing for USB and CAN synchronization.

It features two independent serial peripheral interfaces (SPI1/SPI2), dual SCI UARTs supporting LIN protocol extensions, and a 12-bit ADC with 8 input channels - all operable in Stop3 low-power mode. The integrated MSCAN controller includes five receive buffers, three prioritized transmit buffers, and programmable bus-off recovery.

Key Specifications

Pinout & Package

44-pin LQFP package (10 mm × 10 mm, 0.8 mm pitch) with exposed thermal pad. Pin functions include dedicated USB I/O (USBDN/USBDP/VUSB33), CAN transceiver pins (RXCAN/TXCAN), crystal oscillator inputs (XTAL/EXTAL), and 33 GPIOs including 6 Rapid GPIO lines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with K22FN512VLH12, MCF51JM32EVLD delivers native CAN 2.0B and hardware-accelerated AES/SHA-1 essential for automotive and industrial control, while MCF51JM64VLD offers seamless flash capacity upgrade within identical thermal and layout constraints.

Availability

MCF51JM32EVLD is available at Aetrix Electronics and suitable for automotive body electronics, industrial gateways, medical handheld diagnostics, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MCF51JM32EVLD 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The MCF51JM32EVLD belongs to the ColdFire V1 microcontroller family, engineered for cost-sensitive, security-critical embedded systems requiring CAN, USBOTG, and hardware crypto acceleration in compact LQFP packages.

FAQ

What is the maximum operating frequency of the MCF51JM32EVLD?

The MCF51JM32EVLD operates at a maximum core frequency of 50.33 MHz across its full 2.7 V to 5.5 V supply range and –40°C to +105°C temperature specification. This frequency is achieved using the internal multipurpose clock generator (MCG) in PLL mode with an external crystal reference, and is validated for Dhrystone 2.1 performance at 0.76 MIPS/MHz when executing from flash memory. The MCF51JM32EVLD maintains timing integrity under worst-case voltage and temperature conditions.

Does the MCF51JM32EVLD support CAN 2.0B protocol?

Yes, the MCF51JM32EVLD integrates an MSCAN module fully compliant with CAN 2.0A/B protocols. It supports standard and extended frame formats, five receive buffers with FIFO, three prioritized transmit buffers, programmable identifier filtering (2×32-bit, 4×16-bit, or 8×8-bit), and bus-off recovery. The MCF51JM32EVLD's MSCAN implementation includes internal timestamping and wakeup capability with integrated low-pass filtering - confirmed in Section 1.3.1 and Table 2 of the MCF51JM128 datasheet, which applies to all members of the MCF51JMxx family including MCF51JM32EVLD.

What security features are enabled in the MCF51JM32EVLD variant?

As indicated by the "E" suffix in MCF51JM32EVLD, the Cryptographic Acceleration Unit (CAU) and Random Number Generator Accelerator (RNGA) are factory-enabled. The CAU provides hardware co-processing for DES, 3DES, AES, MD5, and SHA-1 algorithms, while the RNGA delivers FIPS-140-compliant 32-bit random numbers. These features are active upon power-up and require no external licensing - verified in Table 3 (Orderable Part Number Summary) and Section 1.3.1 of the MCF51JM128 datasheet, which explicitly lists CAU+RNGA as enabled for all "E"-suffix variants including MCF51JM32EVLD.

Is the MCF51JM32EVLD pin-compatible with other members of the MCF51JMxx family in the 44-pin LQFP package?

Yes, the MCF51JM32EVLD shares identical pinout, electrical characteristics, and package dimensions (44-pin LQFP, 10 mm × 10 mm) with MCF51JM64VLD and MCF51JM128VLD per Table 4 (Pin Assignments by Package) and Figure 4 (44-pin LQFP Diagram) in the MCF51JM128 datasheet. All 44-pin variants use the same pin numbering, signal mapping, and shared alternate function priorities - enabling direct substitution where flash size requirements permit, without PCB or layout modifications.

What USB functionality does the MCF51JM32EVLD support?

The MCF51JM32EVLD integrates a full-speed USB On-The-Go (USBOTG) dual-role controller compliant with USB 1.1 and 2.0 specifications. It supports 16 bidirectional endpoints with double buffering, control/bulk/interrupt/isochronous transfers in both device and host modes, on-chip 3.3 V regulator, integrated pull-up resistors, and OTG protocol logic. This eliminates external PHY and voltage regulation components - confirmed in Section 1.3.1 and Table 2 of the MCF51JM128 datasheet, applicable to all family members including MCF51JM32EVLD.