NXP Semiconductors MCF51JM128VLKR

Overview

MCF51JM128VLKR 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), and a 12-bit 12-channel ADC - all operating up to 50.33 MHz at 2.7–5.5 V. It serves as a drop-in upgrade path from MC9S08JM60 in smart sensors and gateway modules.

For engineers reviewing the MCF51JM128VLKR datasheet, MCF51JM128VLKR pinout, MCF51JM128VLKR application, or MCF51JM128VLKR equivalent, key selection criteria include its 80-pin LQFP package, -40°C to +105°C temperature grade, integrated CAU/RNGA security blocks, dual-role USB OTG with on-chip 3.3 V regulator, and MSCAN controller with programmable wakeup and bus-off recovery.

Technical Context

The MCF51JM128VLKR implements the ColdFire V1 ISA_C core with background debug module (BDM) and executes at up to 50.33 MHz across full voltage/temperature range. Its memory subsystem includes 128 KB flash with block protection and 16 KB SRAM with security lockout, both accessible at CPU clock speed via the local 32-bit platform bus.

Peripherals are tightly coupled through a hierarchical AHB/APB bridge: MSCAN uses dedicated message buffers with FIFO receive and prioritized transmit; USB OTG integrates transceiver, 3.3 V regulator, and pull-ups; CAU accelerates DES/3DES/AES/MD5/SHA-1; RNGA delivers FIPS-140-compliant 32-bit random numbers; and TPM1/TPM2 support eight PWM/IC/OC channels with terminal count interrupts.

Key Specifications

Pinout & Package

Package: 80-pin LQFP, 14 mm × 14 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 microcontroller applications.

Compared with K22FN512VLH12 and S32K144WHT0MLHT, the MCF51JM128VLKR offers unique integration of USB OTG with on-chip regulator/transceiver, MSCAN wakeup filtering, and CAU/RNGA in a mature ColdFire platform - making it optimal for cost-sensitive, USB-enabled industrial gateways where CAN 2.0B suffices and safety certification is not mandated.

Availability

MCF51JM128VLKR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, secure firmware gateways, and USB-capable HMIs requiring stable component supply across extended temperature ranges.

Supply support for MCF51JM128VLKR 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, connected solutions for automotive, industrial, IoT, mobile, and communication infrastructure markets.

The MCF51JM128VLKR belongs to NXP's ColdFire microcontroller family - engineered for seamless migration from 8-bit MCUs to 32-bit performance with integrated USB, CAN, crypto, and analog peripherals targeting cost-conscious industrial and automotive control applications.

FAQ

What is the maximum operating frequency and voltage range for the MCF51JM128VLKR?

The MCF51JM128VLKR operates at up to 50.33 MHz across its full supply voltage range of 2.7 V to 5.5 V. This specification is guaranteed over the entire industrial temperature range (–40°C to +105°C). The core delivers 0.76 Dhrystone 2.1 MIPS per MHz when executing from flash memory, enabling deterministic real-time response in motor control and sensor fusion applications. Voltage tolerance allows direct connection to 3.3 V or 5 V system rails without level-shifting.

Does the MCF51JM128VLKR support USB On-The-Go functionality, and what hardware is integrated?

Yes, the MCF51JM128VLKR includes a full-speed USB OTG dual-role controller with complete on-chip hardware: integrated USB transceiver, dedicated 3.3 V regulator (VUSB33), internal pull-up resistors, and 16 bidirectional endpoints with double buffering. This eliminates the need for external USB PHY, regulator, or discrete pull-up resistors - reducing BOM cost and PCB area. The MCF51JM128VLKR supports control, bulk, interrupt, and isochronous transfers in both device and host modes.

What cryptographic capabilities does the MCF51JM128VLKR provide, and how are they implemented?

The MCF51JM128VLKR integrates two dedicated hardware accelerators: the Cryptographic Acceleration Unit (CAU) and Random Number Generator Accelerator (RNGA). The CAU offloads DES, 3DES, AES, MD5, and SHA-1 operations from the CPU, achieving >10× throughput versus software-only execution. The RNGA produces FIPS-140-compliant 32-bit random numbers using an entropy source derived from analog noise - essential for secure key generation and challenge-response protocols in the MCF51JM128VLKR.

How many CAN message buffers does the MCF51JM128VLKR's MSCAN module support, and what wakeup features are available?

The MCF51JM128VLKR's MSCAN module provides five receive buffers organized in FIFO structure and three transmit buffers with internal priority arbitration. It supports programmable wakeup functionality using a flexible maskable identifier filter (configurable as 2×32-bit, 4×16-bit, or 8×8-bit) combined with an integrated low-pass filter to reject noise-induced false triggers. This enables ultra-low-power CAN node operation in Stop3 mode, where the MCF51JM128VLKR wakes only on valid message identifiers - extending battery life in always-on vehicle modules.

What is the Rapid GPIO (RGPIO) capability of the MCF51JM128VLKR, and which pins support it?

The MCF51JM128VLKR features 16-bit Rapid GPIO (RGPIO) mapped directly to the processor's local 32-bit platform bus, enabling atomic set/clear/toggle operations at full CPU clock speed (50.33 MHz). RGPIO functionality is available on PTA0–PTA7 (8 bits), PTH0–PTH4 (5 bits), and PTJ0–PTJ4 (3 bits), totaling 16 pins. This architecture eliminates software bit-banging overhead - critical for time-critical tasks like LED strobing, encoder quadrature decoding, or fast digital signal conditioning in the MCF51JM128VLKR.