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NXP Semiconductors PCF51QU64VLF
- Part No.:
- PCF51QU64VLF
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
PCF51QU64VLF.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,672
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Product details
Overview
PCF51QU64VLF from NXP Semiconductors (formerly Freescale) is a 32-bit ColdFire V1 microcontroller with 64 KB flash, 8 KB RAM, and integrated analog peripherals including 12-bit ADC/DAC, voltage reference, and analog comparator. It operates from 1.71 V to 3.6 V across –40°C to 105°C and delivers 0.99 DMIPS/MHz executing from flash - used in industrial sensor nodes requiring low-power operation and mixed-signal control.
For engineers reviewing the PCF51QU64VLF datasheet, PCF51QU64VLF pinout, PCF51QU64VLF application, or PCF51QU64VLF equivalent, key selection criteria include its 50 MHz V1 ColdFire core, 10 low-power modes (including VLLS1–VLLS3), Mini-FlexBus interface, EzPort serial programming, and hardware CRC module for firmware integrity verification.
Technical Context
The PCF51QU64VLF implements a ColdFire V1 CPU core with Dhrystone 2.1 performance of 0.99 DMIPS/MHz from flash and 1.10 DMIPS/MHz from RAM. Its clock system includes dual crystal oscillators (1 kHz–32 MHz range options) and a multipurpose clock generator (MCG) supporting multiple low-power modes.
System-level features include a four-channel DMA controller, integrated BDM debug interface with single-wire connection, and a low-leakage wakeup unit (LLWU). Memory architecture comprises Flash, FlexNVM, FlexRAM, and RAM, all accessible via the Mini-FlexBus external bus interface and EzPort serial programming interface.
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 timing for motor and power management. |
| Flash / RAM | 64 KB flash + 8 KB RAM - sufficient for compact embedded firmware with data logging and local decision logic. |
| Supply Range | 1.71 V to 3.6 V - supports direct battery operation (e.g., 2× Li-ion or 3× alkaline) without external regulation. |
| Temp Range | –40°C to 105°C ambient - qualified for under-hood automotive, industrial PLC, and outdoor metering applications. |
| ADC / DAC | 12-bit SAR ADC + 12-bit DAC - provides precision analog I/O for closed-loop sensor conditioning and actuator drive. |
| Low-Power Modes | 10 configurable low-power modes, including VLLS1–VLLS3 (sub-5 μA stop current) - extends battery life in always-on edge devices. |
| Clock Sources | Dual crystal oscillators (1 kHz–32 MHz) + MCG - enables flexible clock tree design with fail-safe backup and ultra-low-power RTC operation. |
Pinout & Package
PCF51QU64VLF is housed in a 48-pin LQFP package (7 mm × 7 mm, 0.5 mm pitch), with exposed thermal pad for enhanced thermal dissipation in high-density industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Digital supply / ground | Primary power domain for core, peripherals, and GPIO; requires local 100 nF + 4.7 μF decoupling per VDD pair. |
| VDDA / VSSA | Analog supply / ground | Isolated analog domain for ADC/DAC/CMP; must be filtered separately to maintain ≥10-bit SNR. |
| EXTAL / XTAL | External crystal input/output | Supports 1–32 MHz crystals for main system clock; internal load capacitors configurable via FOPT register. |
| RESET | Active-low reset input | Accepts 100 ns minimum pulse width; internal pullup ensures reliable startup without external RC network. |
| IRQ | Interrupt request input | Edge-triggered external interrupt pin; supports wake-from-stop with LLWU configuration. |
| TSI_CHx | Touch sensor input | Capacitive sensing channel pins - enable low-power human-machine interface without dedicated touch controller. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC Module | Accelerates firmware image validation and memory integrity checks in <1 μs per 32-bit word - critical for OTA update security. |
| Low-Leakage Wakeup Unit (LLWU) | Configurable wake sources (GPIO, LPTMR, RTC, CMP) with sub-μA standby current - enables event-driven sleep/wake cycles. |
| Mini-FlexBus Interface | 8/16-bit external memory bus with programmable timing - supports NOR flash, SRAM, or FPGA co-processor expansion. |
| EzPort Serial Programming | 4-wire SPI-compatible interface for in-system flash programming - eliminates need for JTAG debugger during production programming. |
| Programmable Delay Block (PDB) | High-resolution timing engine synchronized to FTM/PWM modules - enables precise multi-phase motor commutation or ADC sampling triggers. |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
|
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ with wireless telemetry. IC Role / Device Role / Timing Role: Main controller managing sensor acquisition, signal conditioning via ADC/DAC, low-power scheduling, and secure firmware updates. Use Value: 10 low-power modes and VLLS3 stop current ≤3.3 μA at 105°C extend 10-year battery life using primary lithium cells. |
Use Scenario: DIN-rail mounted electricity meter with tariff switching, tamper detection, and HPLC communication. IC Role / Device Role / Timing Role: System-on-chip handling metrology calculations, EEPROM-backed billing data storage, and real-time clock with calendar functions. Use Value: Integrated hardware CRC and 128-bit unique ID ensure firmware authenticity and prevent cloning in revenue-critical infrastructure. |
| Automotive Body Control | Medical Infusion Pump |
|
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting with LIN bus interface. IC Role / Device Role / Timing Role: Mixed-signal MCU performing PWM motor control, analog sensor monitoring (e.g., position feedback), and LIN transceiver timing. Use Value: –40°C to 105°C operation and 50 MHz deterministic execution meet AEC-Q100 Grade 2 requirements for under-dash placement. |
Use Scenario: Portable infusion pump requiring precise flow rate control, pressure sensing, and battery management. IC Role / Device Role / Timing Role: Safety-critical controller managing stepper motor sequencing, ADC-based pressure loop, and fault-safe shutdown logic. Use Value: Independent analog domain (VDDA/VSSA) and hardware comparator with 6-bit DAC enable robust analog safety interlocks compliant with IEC 62304 Class C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Kinetis KL27Z128VLH4 | ARM Cortex-M0+ core, 48 MHz, 128 KB flash, 16 KB RAM - lacks ColdFire instruction set compatibility and Mini-FlexBus. | Better USB integration and lower active power, but no native support for legacy ColdFire toolchains or code migration. | Select when new designs prioritize ARM ecosystem tools and USB device functionality over ColdFire binary compatibility. |
| MCF51JM128VLF | Same ColdFire V1 core, 128 KB flash, identical 48-LQFP package and pinout - higher flash density with same peripheral set. | Direct drop-in upgrade path for firmware with >64 KB code footprint; shares identical power, timing, and analog specs. | Select when existing PCF51QU64VLF designs require increased firmware capacity without hardware revision. |
Compared with PCF51QU64VLF, KL27Z128VLH4 offers modern ARM toolchain support and USB, while MCF51JM128VLF provides seamless flash scalability within the same ColdFire family - enabling either ecosystem transition or incremental feature growth without board redesign.
Availability
PCF51QU64VLF is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, automotive body controllers, and medical infusion pumps requiring stable component supply and long-term manufacturability.
Supply support for PCF51QU64VLF 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 deep heritage in microcontrollers and analog processing.
The PCF51QU64VLF belongs to the ColdFire V1 microcontroller family, designed specifically for cost-sensitive, low-power industrial control applications demanding mixed-signal integration, deterministic real-time performance, and extended temperature reliability.
FAQ
What is the maximum operating frequency of the PCF51QU64VLF core?
The PCF51QU64VLF features a ColdFire V1 CPU core rated for up to 50 MHz system and core clock frequency in normal run mode. This frequency is achievable across the full –40°C to 105°C temperature range when supplied with 1.71 V to 3.6 V. In very low-power run (VLPR) mode, the core clock is limited to 2 MHz to minimize dynamic power consumption while retaining full peripheral functionality.
Does the PCF51QU64VLF support in-system programming via a serial interface?
Yes, the PCF51QU64VLF supports in-system programming through its EzPort interface - a 4-wire SPI-compatible serial port that enables flash memory programming without removing the device from the PCB. This capability is used for field firmware updates and high-volume manufacturing programming, eliminating dependency on JTAG or BDM debug interfaces for production line flashing.
What analog peripherals are integrated into the PCF51QU64VLF?
The PCF51QU64VLF integrates a 12-bit SAR ADC with up to 16 channels, a 12-bit DAC, an analog comparator (CMP) with built-in 6-bit DAC and programmable reference input, and a dedicated voltage reference (VREF) module. These peripherals share a common analog supply domain (VDDA/VSSA) and are designed for simultaneous use in sensor signal conditioning, closed-loop control, and precision actuator drive applications.
How many low-power modes does the PCF51QU64VLF offer, and what is the lowest achievable current draw?
The PCF51QU64VLF provides 10 distinct low-power modes, including Very Low-Leakage Stop (VLLS1–VLLS3). In VLLS3 mode at 3.0 V and –40°C to 25°C ambient, the device draws as little as 1.8 μA - rising to 3.3 μA at 105°C. This ultra-low quiescent current enables multi-year battery operation in always-on edge sensing applications when combined with the low-leakage wakeup unit (LLWU).
Is the PCF51QU64VLF pin-compatible with other members of the MCF51QU family?
No, the PCF51QU64VLF is not universally pin-compatible across the MCF51QU family. While it shares the 48-LQFP (LF) package with the MCF51QU32VFM and MCF51QU64VHS, pin assignments differ between LF and HS/FM packages. The PCF51QU64VLF uses the LF package variant (7 mm × 7 mm), and direct substitution requires verification of signal mapping, power domain routing, and thermal pad layout against the specific target variant's datasheet pinout diagram.
PCF51QU64VLF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- MCF51Qx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- Coldfire V1
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- EBI/EMI, I2C, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM
- Number of I/O:
- 35
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 13x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
PCF51QU64VLF FAQ
1.How can I place an order for PCF51QU64VLF through Aetrix?
Please submit a Request for Quotation (RFQ) for PCF51QU64VLF 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 PCF51QU64VLF reliable?
The price and inventory of PCF51QU64VLF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCF51QU64VLF is usually 5 days.
3.What payment methods are accepted for PCF51QU64VLF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCF51QU64VLF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCF51QU64VLF?
PCF51QU64VLF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCF51QU64VLF 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 PCF51QU64VLF?
For technical support, including PCF51QU64VLF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCF51QU64VLF requirements.
6.How does Aetrix verify that PCF51QU64VLF is sourced from the original manufacturer or authorized distributors?
All PCF51QU64VLF 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 PCF51QU64VLF meets industry standards.
7.What is the process for return or replacement of PCF51QU64VLF?
All PCF51QU64VLF units undergo pre-shipment inspection (PSI). If there is an issue with PCF51QU64VLF, 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 PCF51QU64VLF part is unused and in its original packaging.
Return procedure for PCF51QU64VLF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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