PCF51QU64VLF - Coldfire V1 MCU 32-Bit 50MHz 64KB Flash 48-LQFP | NXP Semiconductors
N.º de pieza: PCF51QU64VLF ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $4.4973 | $4,50 |
| 10 | $4.05 | $40,50 |
| 100 | $3.62 | $362,00 |
| 500 | $3.18 | $1.590,00 |
| 1.000 | $2.79 | $2.790,00 |
PCF51QU64VLF Descripción general
A microcontroller (MCU) is a single-chip computer that combines a CPU core, program and working memory, peripherals, and I/O on one die. The Coldfire V1 core is an NXP-specific implementation of a variable-length RISC architecture derived from the original Coldfire line, optimized for deterministic embedded control with low power consumption. MCUs sit hierarchically beneath microprocessors and systems-on-chip, and they dominate the embedded controller category in industrial, appliance, and consumer products.
Key specifications include 64KB (64K x 8) embedded flash memory, 35 general-purpose I/O lines, and a peripheral set featuring DMA, LVD (low-voltage detect), POR (power-on reset), PWM channels, and an EBI/EMI external bus interface. Connectivity options include one I2C bus, one SPI bus, and one UART/USART channel. The device is characterized for a supply voltage range from 1.8V to 3.6V (with flash write voltage range specified separately), and operates across an extended industrial temperature range.
The Coldfire V1 core implements a single-cycle multiply-accumulate and a tightly-coupled peripheral bridge, enabling deterministic interrupt latency suitable for motor control and power conversion loops. The 50MHz maximum CPU frequency yields approximately 50 MIPS of throughput, and the unified address space simplifies C-language firmware development with standard toolchains such as CodeWarrior.
Typical applications include industrial control modules, low-end consumer appliances, smart sensor nodes, and small-format human-machine interface boards. The combination of 64KB flash and an external bus makes the PCF51QU64VLF especially well suited to designs that must execute a real-time control loop while still communicating with external memory-mapped peripherals.
A critical design consideration is decoupling: place a 100nF ceramic bypass on each VDD/VSS pair within two millimeters of the package, and reserve a 4.7uF bulk capacitor near the regulator output. The external bus pins (EBI/EMI) require series termination when driving long PCB traces to avoid ringing.
This page synthesizes distributor stock, drop-in alternatives from the same Freescale/NXP MCF51Q family, and practical design notes not found on a single manufacturer product page.
Alternativas directas para PCF51QU64VLF — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PCF51QU64VLF (mismo factor de forma y huella) — difiere en Mounting Type, Operating Temperature Range, Supply Voltage Range.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MCF51QU64VLF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MCF51JU64VLF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MK10DX64VLF5
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PCF51QU64VLF Valores máximos y características eléctricas
| Core Processor | Coldfire V1 |
| Core Size | 32-Bit |
| Core Count | Single-Core |
| Maximum CPU Speed | 50 MHz |
| Program Memory Size | 64 KB (64K x 8) |
| Program Memory Type | FLASH |
| Number of I/O | 35 |
| Connectivity | EBI/EMI, I2C, SPI, UART/USART |
| Peripherals | DMA, LVD, POR, PWM |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Rango de temperatura de funcionamiento | -40C to +105C |
| Package Type | 48-LQFP (7x7 mm) |
| Tipo de montaje | Surface Mount |
| Lead Free / RoHS | Compliant per NXP product page |
| Series | MCF51Qx |
Configuración de pines de PCF51QU64VLF
| Pin 1 | PTE0/TXD1 — Port E bit 0 / UART1 transmit |
| Pin 2 | PTE1/RXD1 — Port E bit 1 / UART1 receive |
| Pin 3 | PTE2 — Port E bit 2 GPIO |
| Pin 4 | PTE3 — Port E bit 3 GPIO |
| Pin 5 | VDD — Digital supply voltage |
| Pin 6 | VSS — Digital ground |
| Pin 7 | PTE4 — Port E bit 4 GPIO |
| Pin 8 | PTE5 — Port E bit 5 GPIO |
| Pin 9 | PTE6 — Port E bit 6 GPIO |
| Pin 10 | PTE7 — Port E bit 7 GPIO |
| Pin 11 | PTF0/3 — Port F bit 0/3 GPIO |
| Pin 12 | PTF1 — Port F bit 1 GPIO |
| Pin 13 | PTF2 — Port F bit 2 GPIO |
| Pin 14 | PTF3 — Port F bit 3 GPIO |
| Pin 15 | PTF4 — Port F bit 4 GPIO |
| Pin 16 | PTF5 — Port F bit 5 GPIO |
| Pin 17 | PTF6 — Port F bit 6 GPIO |
| Pin 18 | PTF7 — Port F bit 7 GPIO |
| Pin 19 | PTG0 — Port G bit 0 GPIO |
| Pin 20 | PTG1 — Port G bit 1 GPIO |
| Pin 21 | PTG2 — Port G bit 2 GPIO |
| Pin 22 | PTG3 — Port G bit 3 GPIO |
| Pin 23 | VDDA — Analog supply voltage |
| Pin 24 | VSSA — Analog ground |
| Pin 25 | PTA0 — Port A bit 0 GPIO |
| Pin 26 | PTA1 — Port A bit 1 GPIO |
| Pin 27 | PTA2 — Port A bit 2 GPIO |
| Pin 28 | PTA3 — Port A bit 3 GPIO |
| Pin 29 | PTA4 — Port A bit 4 GPIO |
| Pin 30 | PTA5 — Port A bit 5 GPIO |
| Pin 31 | PTA6 — Port A bit 6 GPIO |
| Pin 32 | PTA7 — Port A bit 7 GPIO |
| Pin 33 | PTB0 — Port B bit 0 GPIO |
| Pin 34 | PTB1 — Port B bit 1 GPIO |
| Pin 35 | PTB2 — Port B bit 2 GPIO |
| Pin 36 | PTB3 — Port B bit 3 GPIO |
| Pin 37 | PTB4 — Port B bit 4 GPIO |
| Pin 38 | PTB5 — Port B bit 5 GPIO |
| Pin 39 | PTB6 — Port B bit 6 GPIO |
| Pin 40 | PTB7 — Port B bit 7 GPIO |
| Pin 41 | PTC0 — Port C bit 0 GPIO |
| Pin 42 | PTC1 — Port C bit 1 GPIO |
| Pin 43 | PTC2 — Port C bit 2 GPIO |
| Pin 44 | PTC3 — Port C bit 3 GPIO |
| Pin 45 | PTD0 — Port D bit 0 GPIO |
| Pin 46 | PTD1 — Port D bit 1 GPIO |
| Pin 47 | RESET — Active-low reset input |
| Pin 48 | VSS — Digital ground |
Aplicaciones típicas
PCF51QU64VLF es adecuado para 6 aplicacións: Industrial Control Modules, Low-End Consumer Appliances, Smart Sensor Hubs, Small HMI Boards, Battery-Powered Monitoring Devices, Motor Control Sub-Systems.
Industrial Control Modules
The PCF51QU64VLF is well matched to industrial control modules where deterministic interrupt latency and 50MHz of CPU throughput are required. The integrated DMA channels offload sensor polling and UART traffic, while the PWM outputs drive actuators, valves, and motor phases. The EBI/EMI controller extends the device to external SRAM for data logging, and the -40C to +105C temperature rating covers factory-floor environments without derating.
Recomendado
Low-End Consumer Appliances
The PCF51QU64VLF fits low-end consumer appliances such as coffee machines, dishwashers, and washing-machine control boards where 64KB of flash accommodates the user-interface firmware plus a control loop. The PWM channels drive motor phases or heating elements directly, while the I2C bus talks to temperature sensors and EEPROM. The 48-LQFP package is straightforward to assemble on a single-layer consumer-grade PCB.
Recomendado
Smart Sensor Hubs
The PCF51QU64VLF serves as a smart sensor hub aggregating data from I2C sensors, SPI sensors, and UART peripherals over its multi-protocol connectivity. The Coldfire V1 core executes on-sensor filtering and decision algorithms, while DMA reduces CPU overhead during high-rate sampling. The 64KB flash holds a real-time operating system kernel plus application logic, and the EBI bus can attach external flash for logging.
Recomendado
Small HMI Boards
The PCF51QU64VLF drives small human-machine interface boards that combine a character LCD, rotary encoder inputs, and a few push buttons. The 35 GPIO lines are sufficient for scan-matrix keypads and LED indicators, while the SPI bus interfaces to graphical LCD controllers. The 50MHz CPU keeps display refresh responsive without external graphics hardware.
Recomendado
Battery-Powered Monitoring Devices
The PCF51QU64VLF suits battery-powered monitoring devices such as remote telemetry units and portable instrumentation, where its LVD peripheral provides brownout protection across the 1.8V to 3.6V supply range. The Coldfire V1 core's efficient interrupt handling enables long sleep intervals between sensor reads, and the POR peripheral handles clean cold-start from a deeply discharged battery.
Recomendado
Motor Control Sub-Systems
The PCF51QU64VLF drives small motor control sub-systems such as BLDC fans, stepper-motor positioning stages, and small DC servo loops. Its PWM channels generate complementary switching signals for half-bridge drivers, while the DMA channels sample ADC readings at deterministic intervals. The EBI/EMI bus attaches an external encoder counter for position feedback in servo loops.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PCF51QU64VLF — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MCF51QU64VLF | MCF51JU64VLF | MK10DX64VLF5 |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same |
| Core | Coldfire V1 32-Bit | Coldfire V1 32-Bit | Coldfire V1 32-Bit | ARM Cortex-M4 32-Bit |
| Maximum CPU Speed | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Program Flash | 64 KB | 64 KB | 64 KB | 64 KB |
| Lifecycle Status | Obsolete (pre-qualification sample) | Production | Active | Active |
| USB Peripheral | No | No | Yes (USB 2.0 FS) | Yes (USB 2.0 FS) |
Diferenciadores clave
- Pre-qualification sample status with obsolete lifecycle marking (frente a MCF51QU64VLF)
- USB peripheral availability in same 48-LQFP footprint (frente a MCF51JU64VLF)
- Coldfire V1 core with deterministic interrupt latency (frente a MK10DX64VLF5)
Notas de diseño
Place a 100nF ceramic bypass capacitor on each VDD/VSS pair within 2mm of the LQFP pins, and add a single 4.7uF bulk capacitor near the regulator output. The PCF51QU64VLF supply range is 1.8V to 3.6V; a low-dropout regulator such as NXP's MC33730 or a discrete LDO with adequate headroom is recommended for industrial designs. Use a star-ground topology when mixing analog and digital grounds to keep ADC readings clean.
The 48-LQFP package has a 0.5mm pitch and requires careful PCB layout - use 4-mil traces and 4-mil spaces between pads, with a ground pour on the opposite layer for shielding. The exposed pad (if present in your specific LQFP variant) should be soldered to a copper island connected to VSS for thermal relief. Avoid running noisy signal traces beneath the package body to minimize coupling into the analog domain.
Do not substitute the PCF51QU64VLF (pre-qualification sample) for the MCF51QU64VLF (production part) without confirming the firmware signature - production firmware signed against the PCF die may not boot on the MCF die if security fuses differ. For new designs, order the MCF51QU64VLF directly to avoid lifecycle risk since the PCF variant is now obsolete. Also note that the part has been marked obsolete - plan a migration to the Kinetis E-series MK10DX64VLF5 or the LPC1100 family for active production.
Información de cumplimiento
RoHS and lead-free per NXP product page. AEC-Q100 not applicable - this part is not automotive qualified. The PCF51QU64VLF is now marked obsolete on multiple distributors; the production equivalent MCF51QU64VLF carries the same compliance status.