NXP Semiconductors MCF51JM64VLH

Overview

MCF51JM64VLH from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller designed for embedded control in automotive and industrial applications. It integrates 64 KB flash, 16 KB SRAM, USB OTG, CAN 2.0B, 12-bit ADC (8 channels), cryptographic acceleration (CAU), and RNGA. It operates up to 50.33 MHz at 2.7–5.5 V and supports Stop3 low-power mode with RTC and ADC operation.

For engineers reviewing the MCF51JM64VLH datasheet, MCF51JM64VLH pinout, MCF51JM64VLH application, or MCF51JM64VLH equivalent, key selection criteria include its 64-pin LQFP (10 mm × 10 mm) package, CAU/RNGA enablement, CAN+USB dual-interface capability, and compatibility with MC9S08JM60 migration paths in body control modules and industrial HMI systems.

Technical Context

The MCF51JM64VLH implements the ColdFire V1 core (ISA_C revision) with background debug module (BDM) and executes at up to 50.33 MHz using an internal FLL/PLL clock system driven by crystal (1–16 MHz) or internal reference. Its memory subsystem includes 64 KB on-chip flash with block protection and 16 KB SRAM with security lock.

Peripheral integration centers on real-time control: dual SCI supporting LIN/RS-232, two SPIs with double buffering, two I²C modules, eight-channel TPM with PWM/capture, MSCAN with five RX buffers and programmable wakeup, and USB OTG with 16 endpoints, on-chip transceiver, and integrated 3.3 V regulator - all accessible via 51 GPIO pins in the 64-pin LQFP variant.

Key Specifications

Pinout & Package

Package: 64-pin LQFP, 10 mm × 10 mm, 0.5 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF51JM64EVLH, the MCF51JM64VLH omits factory-enabled crypto blocks but shares identical pinout and peripheral set - enabling same PCB layout with post-silicon CAU disablement. Versus S9KEAZ128AMLH, it retains ColdFire ISA and BDM debug compatibility but trades ARM software ecosystem breadth for deterministic real-time performance in legacy Freescale designs.

Availability

MCF51JM64VLH is available at Aetrix Electronics and suitable for automotive body control modules, industrial HMI controllers, secure telematics gateways, and smart energy meter interfaces requiring stable component supply across extended temperature ranges (–40°C to +105°C).

Supply support for MCF51JM64VLH 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 markets.

The MCF51JM64VLH belongs to the ColdFire JM series - designed specifically as a 32-bit upgrade path from 8-bit MC9S08JM microcontrollers, emphasizing CAN+USB integration, low-power operation, and cryptographic security for automotive body electronics.

FAQ

What is the maximum operating frequency of the MCF51JM64VLH?

The MCF51JM64VLH operates at up to 50.33 MHz across its full voltage range (2.7 V to 5.5 V). This frequency is achieved using the on-chip multipurpose clock generator (MCG) with FLL or PLL multiplication of internal or external reference clocks. Performance is validated per Dhrystone 2.1 benchmarks: 0.76 MIPS/MHz when executing from flash memory, making it suitable for real-time control tasks in automotive and industrial environments where deterministic timing is critical. The MCF51JM64VLH maintains this speed while supporting simultaneous CAN, USB, and ADC operations.

Does the MCF51JM64VLH include cryptographic hardware acceleration?

No, the MCF51JM64VLH does not include factory-enabled cryptographic acceleration. While the silicon contains the CAU (Cryptographic Acceleration Unit) and RNGA (Random Number Generator Accelerator) logic, these blocks are disabled in the VLH variant. Only the MCF51JM64EVLH variant has CAU and RNGA enabled at manufacture. For applications requiring FIPS-140–compliant random number generation or hardware-accelerated DES/AES/SHA-1, the MCF51JM64EVLH must be selected instead. The MCF51JM64VLH retains all other peripherals - including CAN, USB OTG, and 12-bit ADC - unchanged.

What package type and dimensions does the MCF51JM64VLH use?

The MCF51JM64VLH uses a 64-pin LQFP package measuring 10 mm × 10 mm with 0.5 mm lead pitch. This package is RoHS-compliant and thermally rated for operation from –40°C to +105°C. Pin assignments match those documented in Figure 3 and Table 4 of the MCF51JM128 datasheet (Rev. 4), as the JM64 shares identical pinout with the JM128 in the 64-pin LQFP configuration. The package supports standard reflow soldering profiles and is compatible with automated PCB assembly processes used in automotive and industrial manufacturing.

Can the MCF51JM64VLH operate in low-power modes while maintaining CAN or ADC functionality?

Yes, the MCF51JM64VLH supports Stop3 low-power mode with both CAN wakeup capability and ADC operation enabled. In Stop3 mode, the device draws approximately 10 µA while retaining RTC operation, CAN message filtering (with programmable low-pass wakeup filter), and periodic ADC conversions triggered by internal timers. This allows battery-backed applications - such as telematics loggers or environmental sensors - to remain responsive to CAN bus activity or scheduled measurements without full CPU wake-up, significantly extending operational lifetime. The MCF51JM64VLH's MCG and peripheral clock gating enable selective module activation during low-power states.

Is the MCF51JM64VLH pin-compatible with other members of the ColdFire JM family?

Yes, the MCF51JM64VLH is pin-compatible with all other 64-pin LQFP variants in the MCF51JM family, including MCF51JM128VLH and MCF51JM32VLH. They share identical mechanical footprint, thermal characteristics, and pin assignments per Table 4 of the datasheet. Differences are limited to flash size (32 KB, 64 KB, or 128 KB) and optional CAU/RNGA enablement - meaning a single PCB layout can support multiple JM variants via firmware and BOM configuration. This facilitates scalable product families and simplifies inventory management for manufacturers targeting multiple performance tiers.