NXP Semiconductors MCF51QU128VLHR

Overview

MCF51QU128VLHR from NXP Semiconductors (formerly Freescale) is a ColdFire V1-based 32-bit microcontroller designed for embedded control in resource-constrained, low-power industrial and automotive applications. It integrates 128 KB flash, 12-bit ADC/DAC, up to 50 MHz CPU operation, 10 low-power modes, and operates across –40°C to 105°C at 1.71–3.6 V supply.

For engineers reviewing the MCF51QU128VLHR datasheet, MCF51QU128VLHR pinout, MCF51QU128VLHR application, or MCF51QU128VLHR equivalent, key selection considerations include its FlexNVM/FlexRAM architecture, integrated TSI touch interface, hardware CRC module, and support for Smart Card–enabled UARTs in safety-critical sensor and actuator control systems.

Technical Context

The MCF51QU128VLHR implements a ColdFire V1 core with Dhrystone 2.1 performance of 0.99 DMIPS/MHz from flash and 1.10 DMIPS/MHz from RAM. Its system-level architecture includes a four-channel DMA controller, ColdFire DEBUG_Rev_B+ single-wire BDM interface, and multipurpose clock generator (MCG) supporting crystal oscillators across three frequency bands (1 kHz–32 MHz).

Power management is centered on 10 configurable low-power modes-including VLLS1–VLLS3, LLS, VLPS, and STOP-with sub-μA stop-mode currents (e.g., 1.4–2.6 μA at –40°C to 25°C in VLLS1). Analog subsystems include a 12-bit SAR ADC with programmable reference, 12-bit DAC, analog comparator with internal 6-bit DAC, and voltage reference (VREF) module.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm), RoHS-compliant, moisture sensitivity level 3 (MSL3).

Key Features

Applications

Equivalent & Alternatives

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

Compared with K22FN512VLH12 and MCF51JM128VLF, the MCF51QU128VLHR uniquely balances ColdFire software continuity, integrated touch sensing, and ultra-low-power stop modes-making it optimal for legacy-compatible upgrades in battery-operated HMI and motor control where pin count and analog integration are critical.

Availability

MCF51QU128VLHR is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart sensor nodes, and portable medical devices requiring stable component supply and long lifecycle support.

Supply support for MCF51QU128VLHR 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 MCF51QU128VLHR belongs to NXP's ColdFire V1 microcontroller family, engineered for deterministic real-time control in harsh environments with emphasis on low-power operation, analog integration, and functional safety readiness.

FAQ

What is the maximum operating frequency of the MCF51QU128VLHR core?

The MCF51QU128VLHR features a ColdFire V1 CPU core rated for up to 50 MHz operation in normal run mode. This frequency is achievable across the full –40°C to 105°C temperature range and 1.71–3.6 V supply voltage, with Dhrystone 2.1 performance measured at 0.99 DMIPS per MHz when executing from flash memory. The MCF51QU128VLHR also supports very low-power run (VLPR) mode at up to 2 MHz for extended battery life.

Does the MCF51QU128VLHR support hardware-based cryptographic functions?

The MCF51QU128VLHR does not include dedicated cryptographic accelerators (e.g., AES, SHA), but it provides a hardware CRC module for fast cyclic redundancy checks and a factory-programmed 128-bit unique identification number per chip. These features support firmware integrity verification, secure boot staging, and device identity binding - foundational elements for implementing higher-layer cryptographic protocols in software on the MCF51QU128VLHR.

What package type and pin count does the MCF51QU128VLHR use?

The MCF51QU128VLHR uses a 64-pin LQFP package (10 mm × 10 mm) with exposed pad, designated by the "LH" suffix in its part number. This package supports standard surface-mount assembly, has moisture sensitivity level 3 (MSL3), and provides access to all major peripherals including 48 EGPIO pins, 16 RGPIO pins, TSI channels, ADC inputs, and Mini-FlexBus signals - making it suitable for medium-complexity industrial control boards.

Can the MCF51QU128VLHR operate from a single 3.3 V supply?

Yes, the MCF51QU128VLHR operates fully within its specified 1.71 V to 3.6 V supply range, making 3.3 V a valid and commonly used nominal supply voltage. At 3.3 V, the device delivers full 50 MHz CPU performance, meets all I/O voltage thresholds (VIH ≥ 2.31 V, VIL ≤ 1.16 V), and achieves typical run-mode current of 14.3–17.9 mA (flash execution). Its integrated voltage regulator (VREG) further simplifies power design when using a single rail.

What development tools are supported for the MCF51QU128VLHR?

The MCF51QU128VLHR is supported by NXP's legacy ColdFire toolchain, including CodeWarrior Development Studio for Microcontrollers (v10.x), Processor Expert software configuration tools, and standalone GDB-based debugging via the integrated ColdFire DEBUG_Rev_B+ interface using single-wire BDM. Evaluation is possible with the MCF51QU128 Tower System module (TWR-MCF51QU128) and compatible Tower baseboards.