MK51DX256CLL10 - K51 100MHz Cortex-M4 MCU, 256KB Flash, 100-LQFP | NXP
N.º de pieza: MK51DX256CLL10 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $13.5 | $13,50 |
| 10 | $12.15 | $121,50 |
| 100 | $10.55 | $1.055,00 |
| 500 | $9.2 | $4.600,00 |
| 1.000 | $8.05 | $8.050,00 |
MK51DX256CLL10 Descripción general
A microcontroller (MCU) is a System-on-Chip that combines a CPU core, program memory (Flash), volatile memory (SRAM), and a configurable set of peripherals (ADCs, timers, communication interfaces, LCD drivers). It belongs to the broader hierarchy of embedded processors -> microcontrollers -> ARM Cortex-M microcontrollers -> Kinetis K-series measurement MCUs. MCUs form the lowest layer of the embedded control stack, executing bare-metal or RTOS code that interacts directly with hardware signals while requiring no operating system overhead.
Key features of the MK51DX256CLL10 include 256KB of dual-bank FlexMemory (Flash + EEPROM emulation), a USB 2.0 OTG controller, a Segment LCD driver supporting up to 8x40 segments, an analog suite with 16-bit Sigma-Delta ADC and 12-bit DAC, and a comprehensive serial block (UART, SPI, I2C, I2S, CAN). The device operates across 1.71V to 3.6V with multiple low-power modes including VLLS0 (deepest sleep, RAM retained).
The architecture pairs an ARM Cortex-M4 core with a 16-channel DMA engine and a crossbar switch for simultaneous peripheral/master access without blocking. Freescale/NXP's Kinetis family adds an Enhanced Harvard bus, an MPU for memory protection, and an external bus interface for off-chip memory expansion when the on-chip 256KB Flash is insufficient. Cryptographic acceleration is also integrated for secure bootloader and TLS-style workloads on connected endpoints.
Typical applications include single-phase and polyphase electricity meters (segment LCD readout), portable medical instrumentation, industrial sensors with USB diagnostic output, human-machine interfaces requiring LCD plus CAN connectivity, and motor control signal conditioning. The device's 100MHz Cortex-M4 with DSP instructions is well suited to FIR/FFT processing on ADC streams.
When designing with this part, note that the 100-LQFP (14x14) footprint is shared with the K50/K51/K52 family, allowing migration without board rework when memory or peripheral needs change. Ensure the Segment LCD bias network is correctly configured if unused to avoid quiescent current drain.
This page synthesizes distributor pricing, same-family Kinetis drop-in alternatives, and practical design notes not aggregated on the manufacturer product page.
Alternativas directas para MK51DX256CLL10 — 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 MK51DX256CLL10 (mismo factor de forma y huella) — difiere en Package, SRAM, ADC, Core, USB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MK50DX256CLL10
✅ Sustitución directa✓ En stock
$10.95 / unidad
Ver hoja de datos →MK53DX256ZCLQ10
✅ Sustitución directa✓ En stock
$11.45 / unidad
Ver hoja de datos →MK51DX256CLK10
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MK51DN512ZCLL10
✅ Sustitución directa✓ En stock
$6.45 / unidad
Ver hoja de datos →MCF51AC256BVLKE
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$8.95 / unidad
Ver hoja de datos →MK51DX256CLL10 Valores máximos y características eléctricas
| Core | ARM Cortex-M4 with FPU and DSP |
| Frecuencia de reloj máxima | 100 MHz |
| Program Flash | 256 KB (dual-bank FlexMemory) |
| SRAM | 64 KB |
| Tensión de alimentación | 1.71 V to 3.6 V |
| Encapsulado | 100-LQFP (14x14 mm) |
| Recuento de pines | 100 |
| Operating Temperature (Industrial) | -40C to +105C |
| USB | USB 2.0 OTG (full-speed) |
| Segment LCD Controller | Yes (up to 8x40 segments) |
| ADC | 16-bit Sigma-Delta + SAR |
| DAC | 12-bit |
| Communication Interfaces | UART, SPI, I2C, I2S, CAN |
| DMA Channels | 16 channels |
| Tipo de montaje | Surface Mount |
Guía de configuración de pines de MK51DX256CLL10 100-lqfp (14x14 mm)
Configuración de pines para MK51DX256CLL10 (encapsulado 100-lqfp (14x14 mm)). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para MK51DX256CLL10.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
MK51DX256CLL10 es adecuado para 6 aplicacións: Single-Phase Electricity Meter, Industrial Sensor Hub with USB Output, Portable Medical Instrumentation, Human-Machine Interface (HMI) with LCD, USB Diagnostic and Programming Dongle, Motor Control Signal Pre-Processing.
Single-Phase Electricity Meter
The MK51DX256CLL10 is built specifically for single-phase energy metering: its integrated 16-bit Sigma-Delta ADC pairs with a 12-bit DAC and a Segment LCD driver for direct glass readout of active/reactive energy. The 256KB Flash stores DLMS/COSEM protocol stacks and calibration tables, while the Cortex-M4 plus FPU computes RMS and harmonic distortion at 100MHz under tight metrology timing budgets. Compared to discrete MCU-plus-LCD-driver designs, the K51 collapses three chips into one.
Recomendado
Industrial Sensor Hub with USB Output
The MK51DX256CLL10's USB 2.0 full-speed OTG interface plus its 16-channel DMA engine make it a strong fit for industrial sensor hubs that stream ADC readings over USB to a host PC. The 64KB SRAM buffers multi-channel ADC packets while the Cortex-M4 DSP extensions execute FIR filtering in real time. Designers gain deterministic peripheral DMA access via the crossbar switch, eliminating single-master bottlenecks common on simpler Cortex-M0/M0+ silicon.
Recomendado
Portable Medical Instrumentation
Medical devices such as pulse oximeters and ECG front-ends benefit from the MK51DX256CLL10's combination of low-power modes (VLLS0 with RAM retention at microamp currents), DSP-extended Cortex-M4 for sample-by-sample filtering, and ample 256KB Flash for waveform processing libraries. The single-rail 1.71V to 3.6V supply simplifies battery-pack design, and the Segment LCD controller drives parameter displays without an external driver IC. Healthcare designs typically pair the K51 with a precision op-amp front-end and a low-side current sense amplifier.
Recomendado
Human-Machine Interface (HMI) with LCD
The K51's integrated Segment LCD controller supports up to 8 backplanes and 40 frontplanes, enabling mid-density HMI panels for appliances, thermostats, and industrial controls where a small color TFT would be excessive. The CAN interface links the HMI node to a vehicle or factory backbone, while UART/SPI/I2C enable radio or sensor add-ons. Designers reduce BOM cost by eliminating an external LCD driver and the associated glue logic, while the Cortex-M4 supports on-screen graphics rendering for menus.
Recomendado
USB Diagnostic and Programming Dongle
USB diagnostic tools based on the MK51DX256CLL10 take advantage of the on-chip USB OTG (no external transceiver required), 256KB Flash for firmware tables, and the Cortex-M4 + DMA combination for high-throughput streaming. The K51 also integrates a bootloader ROM that allows field firmware upgrades over USB without an external programmer. Compared to designs using a USB-to-UART bridge plus a host MCU, a single K51 reduces both board area and component cost.
Recomendado
Motor Control Signal Pre-Processing
In motor-control architectures, the MK51DX256CLL10 often serves as the signal-conditioning MCU, sampling current/voltage feedback through its 16-bit ADCs, computing transformations (Clarke/Park) on the Cortex-M4, and streaming torque/position values over CAN to a downstream motor controller. The Segment LCD can display diagnostic state during commissioning. The 256KB Flash holds lookup tables and protection-state machines; the 64KB SRAM supports high-rate sample rings and PID history.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MK51DX256CLL10 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MK50DX256CLL10 | MK53DX256ZCLQ10 | MK51DX256CLK10 | MK51DN512ZCLL10 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same |
| Core | ARM Cortex-M4 100MHz | ARM Cortex-M4 100MHz - same | ARM Cortex-M4 100MHz - same | ARM Cortex-M4 100MHz - same | ARM Cortex-M4 100MHz - same |
| Program Flash | 256 KB | 256 KB | 256 KB | 256 KB | 512 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Segment LCD Controller | Yes (8x40) | No | Yes | Yes (8x40) | Yes (8x40) |
| USB | USB 2.0 OTG (full-speed) | USB 2.0 OTG (full-speed) | USB 2.0 OTG (full-speed) | USB 2.0 OTG (full-speed) | USB 2.0 OTG (full-speed) |
| ADC | 16-bit Sigma-Delta + SAR | 12-bit SAR | 16-bit Sigma-Delta + SAR | 16-bit Sigma-Delta + SAR | 16-bit Sigma-Delta + SAR |
Diferenciadores clave
- Integrated Segment LCD controller up to 8x40 segments (frente a MK50DX256CLL10)
- Sigma-Delta ADC for high-accuracy measurement (frente a MK50DX256CLL10)
- 256KB of dual-bank Flash at 100MHz Cortex-M4 (frente a MK51DN512ZCLL10)
Notas de diseño
Estimated: on-chip voltage regulation drops a single 1.71-3.6 V rail into core logic; bypass the MCU supply pins with a 100 nF ceramic plus 4.7 uF bulk capacitor placed within 5 mm of the VDD/VSS pairs. The integrated voltage regulator requires an external decoupling network on the VCAP pin - consult the K51 reference manual before committing to the layout. Average run current at 100 MHz is in the 30-40 mA range, while VLLS0 retention drops to a few microamps.
The 100-LQFP at 0.5 mm pitch is reworkable but signal routing under the device is impossible. Route the high-speed USB D+/D- pair on the top layer with 90-ohm differential impedance, keeping the pair length-matched to within 2 mm. The Segment LCD pins share package ball-out with standard GPIO; if unused, leave the LCD controller disabled in software to avoid contention on these pins and to prevent quiescent current draw.
When in-field firmware update capability is required, exploit the dual-bank Flash layout (FlexMemory) so updates land in one bank while the other executes, avoiding MCU downtime. Forgotten: enabling the watchdog before entering any low-power mode without first stopping the LPTMR it sources - if the LPTMR is starved, the watchdog may inadvertently reset the device. Boot from Flash at address 0x0000_0000 is the default; verify with the FOPT register setting before locking the part.
Información de cumplimiento
RoHS compliance assumed from NXP product-family policy for industrial-tier MCUs; AEC-Q100 not applicable as this part is industrial-grade. Verify RoHS, REACH and halogen-free at point of order via the manufacturer declaration document.