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NXP Semiconductors MCF51QU32VFM
- Part No.:
- MCF51QU32VFM
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MCF51QU32VFM.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,450
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Product details
Overview
MCF51QU32VFM from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller designed for low-power embedded control in industrial and automotive subsystems. It integrates a 50 MHz CPU, 32 KB flash, 12-bit ADC/DAC, multiple timers (FTM, LPTMR, PDB), UART/SPI/I²C interfaces, and operates across –40°C to 105°C at 1.71–3.6 V supply. Used in motor control feedback loops, sensor signal conditioning, and battery-powered HMI modules.
For engineers reviewing the MCF51QU32VFM datasheet, MCF51QU32VFM pinout, MCF51QU32VFM application, or MCF51QU32VFM equivalent, key selection criteria include its 32-QFN (5 mm × 5 mm) package, support for 10 low-power modes including VLLS1/VLLS3, integrated hardware CRC and 128-bit UID, and compatibility with ColdFire DEBUG_Rev_B+ single-wire BDM debugging.
Technical Context
The MCF51QU32VFM implements the ColdFire V1 core with Dhrystone 2.1 performance of 0.99 DMIPS/MHz when executing from flash and 1.10 DMIPS/MHz from RAM. Its system architecture includes a four-channel DMA controller, Mini-FlexBus external interface, and EzPort serial programming interface.
Clock generation relies on dual crystal oscillators (1 kHz–32 MHz range options) and the Multipurpose Clock Generator (MCG), supporting FEI, FBE, and BLPE modes. Power management features a voltage regulator (VREG), low-leakage wakeup unit (LLWU), and precise low-power mode entry/exit timing - e.g., VLLS3→RUN recovery in ≤92 μs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ColdFire V1 32-bit CPU, up to 50 MHz - enables deterministic real-time control with cycle-accurate interrupt latency. |
| Flash Memory | 32 KB program flash + FlexNVM - sufficient for firmware plus configurable EEPROM emulation without external storage. |
| ADC/DAC | 12-bit SAR ADC and 12-bit DAC - supports precision analog sensing and actuator drive in closed-loop systems. |
| Operating Voltage | 1.71 V to 3.6 V - compatible with single-cell Li-ion, 3.3 V logic rails, and wide-input DC-DC converters. |
| Temperature Range | –40°C to 105°C ambient - qualified for under-hood automotive and industrial edge environments. |
| Low-Power Modes | 10 modes including VLLS1/VLLS3 (≤3.3 μA @ 105°C) - enables multi-year battery life in always-on sensor nodes. |
| Debug Interface | ColdFire DEBUG_Rev_B+ with single-wire BDM - reduces debug footprint and simplifies PCB layout vs. JTAG. |
Pinout & Package
The MCF51QU32VFM is housed in a 32-pin QFN package (5 mm × 5 mm, 0.5 mm pitch) with wettable flanks, optimized for automated optical inspection and thermal dissipation in compact designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Digital power supply and ground | Must be decoupled locally with 100 nF ceramic capacitors; VDD–VSS differential ≤0.1 V ensures stable logic operation. |
| VDDA, VSSA | Analog power supply and ground | Separate analog rail required; VDDA–VDD differential ≤0.1 V prevents ADC/DAC noise coupling. |
| EXTAL/XTAL | External crystal oscillator input/output | Supports 1–32 MHz crystals; internal load capacitance configurable for precision timing in RTC or comm protocols. |
| RESET | Active-low reset input | Accepts 100 ns minimum pulse width; internal pullup enables reliable power-on reset without external RC network. |
| IRQ | Interrupt request input | Configurable as edge-triggered wake source from deep sleep; supports asynchronous wakeup with digital/analog filtering. |
| PTA0–PTA7, PTB0–PTB7, PTC0–PTC7, PTD0–PTD7 | Programmable EGPIO pins | Up to 48 multiplexed I/Os; each supports slew rate control, glitch filtering, and internal pullup/pulldown (22–50 kΩ). |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC module | Accelerates checksum calculation for firmware OTA updates and data integrity verification in safety-critical paths. |
| Low-leakage wakeup unit (LLWU) | Enables selective pin-based wake from VLLS modes with sub-μA quiescent current - critical for energy harvesting systems. |
| Mini-FlexBus interface | 8-/16-bit parallel bus supporting external SRAM, FPGA, or display controllers - extends memory and peripheral capability without USB or PCIe overhead. |
| Touch sensor interface (TSI) | Capacitive touch sensing on up to 16 channels with built-in charge-transfer measurement - eliminates need for dedicated touch IC in HMI designs. |
| Programmable delay block (PDB) | Hardware-triggered timing for synchronized ADC sampling and PWM updates - essential for motor phase current reconstruction. |
Applications
| Motor Control Subsystem | Industrial Sensor Node |
|---|---|
Use Scenario: Brushless DC motor commutation with current sensing and thermal monitoring in HVAC blowers. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, synchronized ADC sampling via PDB, and 3-phase PWM generation using FTM modules. Use Value: 50 MHz core and hardware PDB enable <1 μs loop jitter; 12-bit DAC drives gate driver bias; VLLS3 mode reduces standby consumption to ≤3.3 μA. |
Use Scenario: Wireless temperature/humidity node powered by coin cell, transmitting via UART-to-LoRa bridge. IC Role / Device Role / Timing Role: Analog front-end conditioning, low-power timer-driven wake cycles, and SPI-controlled LoRa transceiver interface. Use Value: Integrated 12-bit ADC and TSI reduce BOM count; 10 low-power modes allow 10-year battery life; unique 128-bit ID enables secure device onboarding. |
| Automotive Body Controller | Smart Appliance UI |
Use Scenario: Door module managing window lift, mirror fold, and interior lighting with LIN communication. IC Role / Device Role / Timing Role: LIN physical layer interface via UART with Smart Card support, GPIO-driven relay drivers, and fault-safe watchdog supervision. Use Value: Single-wire BDM simplifies production test access; –40°C to 105°C rating meets AEC-Q100 Grade 2 requirements; hardware CRC validates firmware integrity. |
Use Scenario: Touch-enabled oven control panel with proximity wake and haptic feedback. IC Role / Device Role / Timing Role: Capacitive touch acquisition via TSI, PWM-driven buzzer/audio output, and I²C-connected display driver. Use Value: On-chip TSI eliminates external touch controller; RGPIO pins support fast-response haptics; 48 EGPIOs accommodate button matrix and status LEDs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Kinetis K22F51212 | ARM Cortex-M4F core, 120 MHz, 512 KB flash, no FlexBus, higher power in active mode | Better floating-point throughput for DSP tasks; lacks native ColdFire toolchain compatibility | Select when migrating to ARM ecosystem or requiring >32 KB flash and Ethernet MAC support |
| MCF51JM128VLF | ColdFire V1 core, 128 KB flash, 48-LQFP package, same peripheral set but larger footprint | Direct software-compatible upgrade path with extended memory for complex protocol stacks | Select when retaining ColdFire toolchain and needing more flash/RAM without redesigning PCB layout |
Compared with K22F51212 and MCF51JM128VLF, the MCF51QU32VFM offers optimal balance of legacy ColdFire code compatibility, ultra-low deep-sleep current (<3.3 μA), and minimal 32-QFN footprint - making it ideal for cost- and space-constrained upgrades of existing ColdFire-based designs.
Availability
MCF51QU32VFM is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and battery-powered sensor nodes requiring stable component supply and long-term lifecycle support.
Supply support for MCF51QU32VFM 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, with roots in Freescale's embedded processor heritage.
The MCF51QU32VFM belongs to the ColdFire QU-series microcontrollers, engineered for deterministic real-time control in resource-constrained, thermally demanding environments - emphasizing low-power operation, robust debug, and analog integration.
FAQ
What is the maximum operating frequency of the MCF51QU32VFM core?
The MCF51QU32VFM features a ColdFire V1 core rated for up to 50 MHz system and core clock frequency. This is achievable under full voltage (1.71–3.6 V) and temperature (–40°C to 105°C) conditions when configured in FEI or FBE clock modes. The bus clock runs at half the core frequency (25 MHz max), and VLPR mode limits core speed to 2 MHz for ultra-low-power operation.
Does the MCF51QU32VFM support in-circuit debugging, and what interface is used?
Yes, the MCF51QU32VFM supports in-circuit debugging via the ColdFire DEBUG_Rev_B+ interface using a single-wire Background Debug Mode (BDM) connection. This requires only one dedicated pin (BKGD) and GND, eliminating the need for multi-pin JTAG headers and simplifying PCB routing while maintaining full breakpoint, watchpoint, and memory inspection capabilities during development and field diagnostics.
What analog peripherals are integrated into the MCF51QU32VFM?
The MCF51QU32VFM integrates a 12-bit SAR ADC with programmable sample time and hardware trigger support, a 12-bit DAC for precision analog output, an analog comparator (CMP) with integrated 6-bit DAC reference, and a dedicated voltage reference (VREF) module. These peripherals share common analog supply rails (VDDA/VSSA) and are specified across the full –40°C to 105°C temperature range.
How many low-power modes does the MCF51QU32VFM support, and what is the lowest current draw?
The MCF51QU32VFM supports 10 distinct low-power modes, including RUN, WAIT, STOP, VLPR, VLPW, VLPS, LLS, and three VLLS variants (VLLS0–VLLS3). In VLLS3 mode at 3.0 V and –40°C to 25°C, typical current draw is 1.8 μA; at 105°C, it rises to 39.2 μA. This makes the MCF51QU32VFM suitable for applications requiring multi-year operation on primary batteries or energy harvesting sources.
Is the MCF51QU32VFM pin-compatible with other members of the MCF51QU family?
No, the MCF51QU32VFM is not pin-compatible with higher-memory variants like MCF51QU64VHS or MCF51QU128VLH due to differing package types: MCF51QU32VFM uses a 32-pin QFN (FM), while VHS, LF, and LH suffixes denote 44-, 48-, and 64-pin packages respectively. Pin assignments, pad counts, and thermal pad configurations differ - requiring PCB redesign for migration between these variants.
MCF51QU32VFM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- MCF51Qx
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- Coldfire V1
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 22
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 8x12b; D/A 1x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
MCF51QU32VFM FAQ
1.How can I place an order for MCF51QU32VFM through Aetrix?
Please submit a Request for Quotation (RFQ) for MCF51QU32VFM on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCF51QU32VFM reliable?
The price and inventory of MCF51QU32VFM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCF51QU32VFM is usually 5 days.
3.What payment methods are accepted for MCF51QU32VFM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCF51QU32VFM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCF51QU32VFM?
MCF51QU32VFM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCF51QU32VFM order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCF51QU32VFM?
For technical support, including MCF51QU32VFM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCF51QU32VFM requirements.
6.How does Aetrix verify that MCF51QU32VFM is sourced from the original manufacturer or authorized distributors?
All MCF51QU32VFM products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCF51QU32VFM meets industry standards.
7.What is the process for return or replacement of MCF51QU32VFM?
All MCF51QU32VFM units undergo pre-shipment inspection (PSI). If there is an issue with MCF51QU32VFM, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCF51QU32VFM part is unused and in its original packaging.
Return procedure for MCF51QU32VFM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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