NXP Semiconductors MCF51JM32VQH

Overview

MCF51JM32VQH from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller designed for embedded control in automotive and industrial applications. It features a 50.33 MHz CPU core, 32 KB flash memory, 16 KB SRAM, integrated USB OTG, CAN 2.0B controller, and 12-bit ADC with 8 channels - deployed in motor control, body electronics, and diagnostic tool interfaces.

For engineers reviewing the MCF51JM32VQH datasheet, MCF51JM32VQH pinout, MCF51JM32VQH application, or MCF51JM32VQH equivalent, key selection criteria include its 64-pin QFP package, –40°C to +105°C operating range, USBOTG dual-role capability, MSCAN compliance, and CAU/RNGA cryptographic acceleration support.

Technical Context

The MCF51JM32VQH 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 system architecture integrates a multipurpose clock generator (MCG) with FLL/PLL, on-chip voltage regulator (VREG), and low-power stop/wait modes supporting RTC operation in all states.

Peripheral integration includes two SCIs (LIN-capable), two SPIs (double-buffered), two I²Cs, TPM1/TPM2 timers (8 total channels), CMT for infrared carrier generation, and dedicated hardware accelerators for AES/SHA-1 (CAU) and FIPS-140-compliant random number generation (RNGA).

Key Specifications

Pinout & Package

64-pin QFP package (14 mm × 14 mm, 0.8 mm pitch), thermally enhanced with exposed thermal pad per Freescale mechanical drawing 64-QFP Rev. 0.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF51JM32VQH, the MCF51JM64VQH offers immediate flash headroom without hardware changes, while the K22FN512VLQ12 delivers higher compute throughput but mandates new schematic/layout, driver porting, and toolchain migration.

Availability

MCF51JM32VQH is available at Aetrix Electronics and suitable for automotive body electronics, industrial diagnostic tools, motor interface boards, and smart sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MCF51JM32VQH 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 acquired Freescale in 2015 and continues development and support of the ColdFire portfolio for legacy automotive and industrial platforms.

The MCF51JM32VQH belongs to the ColdFire JM series - designed specifically for cost-sensitive, high-reliability 32-bit control applications where CAN, USB OTG, and cryptographic security are required without ARM licensing overhead.

FAQ

What is the maximum operating frequency of the MCF51JM32VQH?

The MCF51JM32VQH 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 ambient temperature. This frequency is achievable using the internal MCG's PLL mode with an external crystal reference, and is validated per Freescale Document MCF51JM128 Rev. 4 Section 2.11 AC Characteristics. The MCF51JM32VQH maintains this timing specification under worst-case voltage and temperature conditions.

Does the MCF51JM32VQH include cryptographic acceleration hardware?

Yes, the MCF51JM32VQH includes a Cryptographic Acceleration Unit (CAU) supporting DES, 3DES, AES, MD5, and SHA-1 algorithms, plus a FIPS-140-compliant Random Number Generator Accelerator (RNGA). These units are present in all MCF51JM32 variants including MCF51JM32VQH, as confirmed in Table 1 (Device Comparison) and Section 1.3.1 of the MCF51JM128 datasheet, which applies to the entire JM family.

What is the ADC resolution and channel count for the MCF51JM32VQH?

The MCF51JM32VQH features a 12-bit analog-to-digital converter with 8 input channels, as specified in Table 1 (Device Comparison) of the MCF51JM128 datasheet. It supports right-justified 12-/10-/8-bit output formats, hardware-triggered conversions, and operation in Stop3 low-power mode - enabling precise battery voltage and temperature monitoring without waking the CPU.

Is the MCF51JM32VQH pin-compatible with other devices in the JM series?

The MCF51JM32VQH shares the same 64-pin QFP package and pinout as MCF51JM64VQH and MCF51JM128VQH, as shown in Figure 3 and Table 4 of the MCF51JM128 datasheet. Pin assignments, alternate functions, and electrical characteristics are identical across these variants - allowing direct substitution where flash size requirements permit.

What USB functionality does the MCF51JM32VQH support?

The MCF51JM32VQH integrates a full-speed USB On-The-Go (USBOTG) 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, on-chip 3.3 V regulator, and pull-up resistors - enabling both host (e.g., SD card access) and device (e.g., PC diagnostics) roles without external PHY components.