MK21DX256VMC5 - 32-Bit 50MHz Cortex-M4 MCU | NXP
N.º de pieza: MK21DX256VMC5 ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $5.5282 | $5,53 |
| 10 | $5.5282 | $55,28 |
| 100 | $5.5282 | $552,82 |
| 500 | $5.5282 | $2.764,10 |
| 1.000 | $5.5282 | $5.528,20 |
MK21DX256VMC5 Descripción general
What is a microcontroller? A microcontroller is a semiconductor device that combines a processor core, memory, and peripherals into one integrated circuit. In the product hierarchy, the MK21DX256VMC5 is a microcontroller, embedded processor, ARM Cortex-M MCU, and Kinetis K-series device. Its integrated USB controller supports data-oriented peripheral designs, while the 256 KB flash capacity provides substantially more program storage than small general-purpose MCUs.
The verified product data specifies a 32-bit architecture, ARM Cortex-M4 core, 50 MHz operating frequency, 256 KB flash, USB, and a 121-pin MAPBGA package. The available distributor record reports 7,888 pieces in stock and a unit price of $5.5282 for reference at the stated source date. Other distributor listings describe the component as a Kinetis K20 or K21 device, so the exact family designation and pin details should be confirmed against the current NXP datasheet before a new design is released.
Typical uses include USB-connected embedded controllers, industrial equipment, data-acquisition modules, human-interface devices, and connected peripheral systems. The 50 MHz Cortex-M4 core provides a balance of processing capability and embedded power efficiency, while 256 KB flash allows larger firmware images and more complex application logic. The package requires careful PCB layout and thermal validation because its fine-pitch BGA construction can complicate assembly, inspection, and rework.
The most important design checks are power sequencing, decoupling, USB signal integrity, clock configuration, and exposed-pad thermal management. The verified data does not provide RAM, voltage limits, GPIO count, peripheral details, temperature range, or the complete 121-pin mapping, so those parameters must be taken from the manufacturer datasheet rather than inferred. This page separates verified distributor facts from data requiring direct datasheet confirmation.
This product page combines verified pricing and availability references, package identification, application guidance, and replacement-screening context that can help engineers evaluate whether the MK21DX256VMC5 belongs in an embedded USB design. It is intended as an engineering starting point, not as a substitute for the latest NXP datasheet, errata, or qualification records.
Alternativas directas para MK21DX256VMC5 — 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 MK21DX256VMC5 (mismo factor de forma y huella) — difiere en Package, Flash Memory, Product Family, Supply Voltage.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MK11DX256AVMC5
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MK22DX256VMC5
✅ Sustitución directa✓ En stock
$5.21 / unidad
Ver hoja de datos →MK21DX256VMC5 Valores máximos y características eléctricas
| Processor Architecture | 32-bit ARM Cortex-M4 |
| Maximum CPU Frequency | 50 MHz |
| Flash Memory | 256 KB |
| Flash Organization | 256K x 8 bit |
| Integrated Connectivity | USB |
| Product Family | Kinetis K21 sub-family |
| Encapsulado | 121-pin MAPBGA (8x8) |
| Alternate Package Description | 121-LFBGA |
| Tipo de montaje | Surface Mount |
Guía de configuración de pines de MK21DX256VMC5 121-lfbga
Configuración de pines para MK21DX256VMC5 (encapsulado 121-lfbga). 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 MK21DX256VMC5.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
MK21DX256VMC5 es adecuado para 6 aplicacións: USB Peripheral Controller, Industrial Data Acquisition, Connected Sensor Hub, Human Interface Device, USB Communication Adapter, Compact Embedded Control Board.
USB Peripheral Controller
The MK21DX256VMC5 fits a USB peripheral controller when the design needs a 32-bit ARM Cortex-M4 processor operating at up to 50 MHz and 256 KB of flash for device firmware. Its verified USB connectivity can support command handling, configuration management, status reporting, and application logic in an embedded peripheral. The 121-pin MAPBGA footprint also provides a dense interface for mixed-signal or multi-function designs, although USB mode, endpoint resources, transceiver requirements, and pin assignments remain [DATA_NEEDED]. Confirm those details against the current NXP datasheet before routing the PCB or writing the USB stack.
Recomendado
Industrial Data Acquisition
The MK21DX256VMC5 is suitable as the control core for an industrial data-acquisition system that needs deterministic embedded processing and 256 KB of program flash. A 50 MHz Cortex-M4 core can supervise sensors, control relays, record events, and manage a communications interface, while the dense BGA package can fit a compact controller board. The verified information does not state ADC resolution, input count, operating temperature, RAM, or industrial certification, so those requirements must be checked before selecting the device. Use careful grounding, isolation, protection, and calibration practices for analog measurements.
Recomendado
Connected Sensor Hub
The MK21DX256VMC5 can serve as the central processor in a connected sensor hub because it combines a 32-bit ARM Cortex-M4 core, 256 KB flash, and USB connectivity in one 121-pin MAPBGA device. Firmware can aggregate readings, apply thresholds, maintain local configuration, and present data through USB or another verified peripheral interface. The supplied data does not identify specific sensor interfaces, wireless radios, RAM, or low-power modes, so those functions may require companion components. Validate signal levels, timing, power budget, and thermal conditions against the final system requirements.
Recomendado
Human Interface Device
The MK21DX256VMC5 is appropriate for a USB human-interface device when firmware needs more program storage and processing capability than a small basic MCU. The 50 MHz Cortex-M4 core can scan controls, debounce inputs, manage indicators, and implement device firmware, while USB connectivity supports a wired peripheral interface. The verified package data supports a surface-mount 121-pin MAPBGA implementation, but mechanical constraints, display drivers, button scanning topology, ESD protection, and HID-specific requirements are not provided. Confirm pin multiplexing and USB electrical details from the NXP documentation before finalizing the board.
Recomendado
USB Communication Adapter
The MK21DX256VMC5 can be used in a USB communication adapter that translates between a host interface and embedded equipment. Its 32-bit Cortex-M4 architecture and 256 KB flash provide space for protocol handling, configuration storage, diagnostics, and firmware updates, while USB connectivity provides the external communications path. The supplied data does not confirm the USB speed, device or host role, transceiver arrangement, or maximum data rate, so the adapter should not be released until those parameters are verified. Include ESD protection, connector compliance, cable-length margin, and firmware recovery behavior in the design review.
Recomendado
Compact Embedded Control Board
The MK21DX256VMC5 is suitable for a compact embedded control board that combines local processing, USB connectivity, and a 121-pin MAPBGA footprint. The 50 MHz Cortex-M4 core supports responsive task scheduling and protocol management, while 256 KB flash accommodates application firmware and configuration logic. The package density can reduce board area but requires careful escape routing, via-in-pad considerations, assembly profile control, and inspection planning. Because RAM, voltage, pin mapping, thermal limits, and peripheral resources are not supplied in the verified excerpts, validate the complete schematic and layout against the manufacturer documentation.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MK21DX256VMC5 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MK11DX256AVMC5 | MK22DX256VMC5 |
|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
Diferenciadores clave
- Verified 256 KB flash capacity (frente a MK11DX256AVMC5)
- Verified 50 MHz Cortex-M4 operating class (frente a MK22DX256VMC5)
- Verified USB connectivity (frente a MK11DX256AVMC5)
- Verified reference pricing and availability (frente a MK22DX256VMC5)
Notas de diseño
Treat the 121-pin MAPBGA as a fine-pitch assembly and escape-routing problem. Verify the exact NXP ball map, land pattern, exposed-pad treatment, via-in-pad policy, solder mask, and assembly component height before committing copper. The verified data identifies an 8x8 MAPBGA in one listing and an LFBGA description in another, so the mechanical drawing and land pattern must come from the current manufacturer package documentation rather than from the distributor text alone.
Design the supply network for the MK21DX256VMC5 only after confirming the official voltage range and I/O-domain requirements. Place local bulk and high-frequency decoupling close to the device power pins, provide clean return paths, and separate noisy switching or USB circuitry from sensitive analog and clock areas. The supplied evidence does not establish the regulator voltage, current limit, decoupling value, or power-consumption figures, so these items require direct datasheet verification rather than estimation.
If the USB function is used, preserve the complete USB implementation requirements from the NXP documentation, including transceiver integration, D+/D- routing, reference plane continuity, connector protection, and clock configuration. Keep the USB pair short, impedance-controlled, and free from unnecessary stubs. Because the verified snippets do not specify USB speed, role, endpoint resources, or transceiver configuration, these details must be confirmed before layout release.
Do not treat a matching 256 KB flash number or a similar Kinetis family name as proof of drop-in compatibility. A valid replacement must match the package, every ball assignment, power domains, voltage tolerances, clocking, reset behavior, USB functions, peripheral mapping, and firmware assumptions. The supplied cross-reference results identify only comparison leads; validate the official datasheets, errata, and a hardware sample before approving a substitution.
Información de cumplimiento
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Obtain current compliance declarations from NXP or the authorized distributor.
