MCF51QU32VHS - ColdFire V1 32-bit MCU 32KB 50MHz | NXP
MPN: MCF51QU32VHS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MCF51QU32VHS Overview
A microcontroller unit (MCU) is a single-chip embedded processor that integrates a CPU core, program memory (flash), data memory (RAM), and peripherals such as timers, serial interfaces, and analog-to-digital converters on one die. Microcontrollers sit at the lowest level of the embedded computing hierarchy - above bare logic ICs but below application processors - and the MCF51QU32VHS belongs to the broader family of 32-bit embedded MCUs within NXP's power-management and control semiconductor portfolio.
Key features of the MCF51QU32VHS include the ColdFire V1 32-bit core executing at 50 MHz, 32 KB of flash program memory, and NXP's innovative FlexMemory with configurable embedded EEPROM, which allows portions of the flash array to be emulated as EEPROM for data logging without external memory. The integrated USB interface eliminates the need for a separate USB controller chip in cost-sensitive designs.
The MCF51Qx portfolio is defined by two families (QM and QU) that scale from 32 KB to 128 KB of flash, providing a clear upgrade path: designs can move to higher flash densities within the same family while preserving the software investment and peripheral set. The device is specified for an ambient temperature range of -40C to +105C, making it suitable for harsh industrial environments.
Typical applications include cost-sensitive embedded systems requiring USB connectivity, such as industrial control nodes, consumer appliance interfaces, low-power sensing platforms, and peripheral coordination tasks where a compact 5x5 mm footprint is important.
When designing with this device, verify the exact ordering suffix: the VHS suffix denotes the 44-ball MAPBGA package with the extended temperature range; other suffixes in the family offer different packages and temperature grades.
This page synthesizes distributor availability data, same-family drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone.
Drop-in alternatives for MCF51QU32VHS — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MCF51QU32VHS (same form factor and footprint) — differing in Flash Memory, Package, Analog-to-Digital Converter, Architecture, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MCF51QU64VHS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →MCF51QU128VHS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →MCF51JU32VHS
✅ Drop-In✓ In Stock
$1.1106 / Unit
View Datasheet →MCF51JF32VHS
✅ Drop-In📋 Reference alternative (not in catalog)
MCF51QU32VHS Maximum Ratings & Electrical Characteristics
| Core Processor | ColdFire V1 |
| Core Size | 32-bit |
| Max Clock Frequency | 50 MHz |
| Flash Memory | 32 KB (32K x 8) |
| FlexMemory / Embedded EEPROM | Yes (configurable embedded EEPROM) |
| USB Interface | Yes (USB device) |
| Package | 44-MAPBGA (5x5 mm) / 44-LGA |
| Operating Temperature Range | -40C to +105C (ambient) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Family | MCF51Qx (QU family, 32 KB to 128 KB flash scaling) |
MCF51QU32VHS 44-mapbga (5x5 mm) / 44-lga Pin Configuration Guide
Pin configuration for MCF51QU32VHS (44-mapbga (5x5 mm) / 44-lga package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MCF51QU32VHS.
Refer to the datasheet for full pin configuration.
Typical Applications
MCF51QU32VHS is suitable for 6 applications: Cost-Sensitive USB Embedded Devices, Industrial Control Nodes, Low-Power Battery-Powered Sensing, Consumer Appliance Interfaces, Peripheral Coordination and Bridging, Test and Measurement Accessories.
Cost-Sensitive USB Embedded Devices
The MCF51QU32VHS fits cost-sensitive USB-connected products because NXP integrated the USB interface directly on the 50 MHz ColdFire V1 die, removing the need for a separate USB controller or bridge chip. In a typical HID sensor dongle, the MCU enumerates as a full-speed USB device while the 32 KB flash stores both the USB stack and application firmware, and FlexMemory EEPROM retains configuration and calibration data across power cycles. The 5x5 mm 44-ball MAPBGA keeps the PCB footprint small enough for thumb-drive-class enclosures. The trade-off versus a dedicated USB MCU is flash headroom: at 32 KB, developers must compile the USB stack tightly, or move to the pin-compatible MCF51QU64VHS if the code base grows.
Recommended
Industrial Control Nodes
In industrial control and peripheral coordination, the MCF51QU32VHS is attractive because it is specified from -40C to +105C ambient, covering cabinet, motor-adjacent, and outdoor environments where commercial-grade parts fail. The ColdFire V1 core at 50 MHz provides deterministic 32-bit processing for control loops, while the FlexMemory embedded EEPROM stores setpoints and fault logs without an external serial EEPROM - saving board area and BOM cost in distributed I/O nodes. The QU family's low-power profile suits always-on monitoring nodes that must minimize average current. Designers should verify peripheral count (timers, serial channels, ADC) against node requirements; if more I/O is needed, the same-package MCF51QU128VHS offers 128 KB flash for richer protocol stacks such as Modbus over UART plus USB commissioning.
Recommended
Low-Power Battery-Powered Sensing
NXP positions the MCF51QU32VHS as a low-power MCU, and that profile aligns with battery-powered sensing products such as portable meters, environmental loggers, and wireless-sensor front ends. The 50 MHz ColdFire V1 core can burst-process sensor data and return to low-power modes, while FlexMemory EEPROM incrementally logs readings so no external non-volatile memory is needed - important where every square millimeter and microamp matters. The integrated USB port provides a convenient wired commissioning and data-dump path when the device is docked. Engineers should budget the 32 KB flash carefully: a compact sensor-fusion or filtering routine plus a thin USB stack fits, but heavier stacks should move to the pin-compatible MCF51QU64VHS or MCF51QU128VHS without any PCB change.
Recommended
Consumer Appliance Interfaces
Consumer appliances - coffee machines, cooktops, HVAC wall units - need a 32-bit MCU with a USB or service port, small footprint, and aggressive unit cost, which is exactly the segment NXP cites for the MCF51QU32VHS. The 44-ball 5x5 mm MAPBGA fits under a display PCB, the -40C to +105C range covers near-heating-element placements, and embedded EEPROM via FlexMemory stores user preferences through power cycles without external memory. The 50 MHz core comfortably runs button matrices, LED/LCD driving, and touch or encoder decoding. The main design consideration is firmware budgeting at 32 KB: localized multi-language strings and UI code consume flash quickly, so teams should plan the same-footprint upgrade path to MCF51QU64VHS/128VHS from day one.
Recommended
Peripheral Coordination and Bridging
The MCF51QU32VHS works well as a peripheral coordinator - a small MCU that bridges sensors, actuators, and a host over USB while a main application processor handles heavy computation. Jaron Semiconductor's catalog describes the part as an MCU for embedded control and peripheral coordination, and its USB interface plus 32-bit ColdFire V1 core make it a natural USB-to-UART/SPI/I2C bridge with local preprocessing: filtering, thresholding, and protocol translation in 32 KB of flash. FlexMemory EEPROM stores device descriptors and last-known-good configuration. Because the QU family scales flash density in the identical 44-ball package, a bridge design can start at 32 KB and migrate to 128 KB as protocol complexity grows with zero PCB respin - a meaningful risk-reduction for long-lived industrial host platforms.
Recommended
Test and Measurement Accessories
USB-connected measurement accessories - data loggers, calibrator pods, sensor adapters - benefit from the MCF51QU32VHS combination of full-speed USB device capability, a 50 MHz 32-bit core for timing-critical acquisition, and a compact 5x5 mm footprint that fits probe-style housings. The -40C to +105C ambient specification supports benchtop environments with wide temperature swings, and FlexMemory EEPROM stores factory calibration constants that must survive firmware updates. At 32 KB, firmware for a simple ADC-sampling-plus-USB-streaming application fits with margin; complex triggering or protocol layers should target the pin-compatible MCF51QU64VHS/128VHS. Designers should confirm ADC and timer specifications in the MCF51Qx datasheet against sampling-rate and resolution requirements early in the project.
Recommended
Recommended Products Summary
Engineering reference data for MCF51QU32VHS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MCF51QU64VHS | MCF51QU128VHS | MCF51JU32VHS | MCF51JF32VHS |
|---|---|---|---|---|---|
| Package | 44-MAPBGA (5x5 mm) VHS | 44-MAPBGA (5x5 mm) VHS - same | 44-MAPBGA (5x5 mm) VHS - same | 44-MAPBGA (5x5 mm) VHS - same | 44-MAPBGA (5x5 mm) VHS - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | ColdFire V1, 32-bit | ColdFire V1, 32-bit | ColdFire V1, 32-bit | ColdFire V1, 32-bit | ColdFire V1, 32-bit |
| Max Clock Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash Memory | 32 KB | 64 KB | 128 KB | 32 KB | 32 KB |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
Key Differentiators
- Lowest flash density means lowest cost in the QU family (vs MCF51QU128VHS)
- FlexMemory configurable embedded EEPROM (vs MCF51JF32VHS)
- Extended industrial temperature in a compact package (vs MCF51JU32VHS)
Design Notes
Verify the ordering suffix before release: the VHS suffix encodes both the 44-ball MAPBGA (5x5 mm) package and the -40C to +105C extended temperature range. Other MCF51Qx suffixes provide different packages and commercial temperature grades that are NOT drop-in replacements on this footprint. Also budget the 32 KB flash conservatively - NXP's QU family scales to 64 KB (MCF51QU64VHS) and 128 KB (MCF51QU128VHS) in the identical package, so design the PCB to accept the higher densities from the start as firmware insurance.
The 44-ball MAPBGA (5x5 mm) uses a 0.8 mm-class ball pitch typical of this package family; follow the MCF51Qx datasheet land-pattern recommendation and use a standard SMD BGA reflow profile. Fan out power (VDD) and ground balls first with short, wide traces and a solid ground plane; place 100 nF decoupling ceramic capacitors within 2 mm of each supply ball pair. Because the package is area-array, visual inspection is limited - plan X-ray or electrical test coverage for prototype builds rather than relying on AOI alone.
FlexMemory configurable embedded EEPROM emulates EEPROM within the flash array; per the MCF51Qx family description, erase/write cycles consume flash endurance budget, so implement wear-leveling in firmware and avoid logging high-frequency data to EEPROM emulation. Reserve write operations for calibration constants and infrequent configuration changes. USB VBUS detection and inrush behavior should follow the USB spec limit of 100 uF maximum bulk capacitance and 10 uF minimum on the device side; verify the exact supply-voltage range in the current MCF51Qx datasheet before finalizing the regulator selection.
Compliance Information
RoHS compliant per Mouser/DigiKey catalog categorization of this NXP part. REACH, halogen-free, and conflict-minerals statuses were not stated in the verified web data.
