MK51DX128CMC7
MK51DX128CMC7 - 72MHz Cortex-M4 MCU | NXP | Measurements
The NXP Semiconductors MK51DX128CMC7 is a 32-bit Arm Cortex-M4 microcontroller operating at 72 MHz, with 128 KB of flash memory, 32 KB of SRAM, 61 I/O, USB connectivity, and high-precision analog integration in a 121-MAPBGA package measuring 8 x 8 mm. The Kinetis K51 device combines a segment LCD interface, USB, serial interfaces, DMA, and measurement-oriented analog peripherals for embedded instrumentation.
What is a Kinetis K51 microcontroller? It is a 32-bit embedded microcontroller in NXP's Kinetis portfolio, built around the Arm Cortex-M4 processor core. The MK51DX128CMC7 belongs to the Kinetis K51 measurement MCU family, which targets compact industrial, medical, consumer, and test equipment designs requiring local analog measurement, human-machine interfaces, and USB connectivity. It sits within the hierarchy of microcontroller, embedded processor, semiconductor, and electronic component.
Key verified features include a 72 MHz processor clock, 128 KB (128K x 8) program flash, 32 KB SRAM, 61 I/O, and an 8 x 8 mm 121-MAPBGA package. Listed connectivity includes I2C, IrDA, SPI, UART/USART, USB, and USB OTG. Listed peripherals include DMA, I2S, low-voltage detection, power-on reset, PWM, and a watchdog timer. These resources support simultaneous sensor acquisition, communications, display control, and control-loop processing.
The device architecture centers on a 32-bit Arm Cortex-M4 core with DSP-capable signal processing. Its high-precision analog integration makes it appropriate for measurement systems, while segment LCD support enables compact local user interfaces without requiring a separate display controller. USB and multiple serial interfaces provide paths for host connectivity, sensor networking, data logging, and configuration. Firmware should use the manufacturer's device configuration, pin multiplexing, clock, analog, and low-power guidance for the exact package variant.
Typical applications include digital multimeters, temperature-measurement instruments, medical monitoring equipment, industrial panel meters, USB-connected test tools, and compact data-acquisition systems. In these systems, the MCU can collect sensor inputs, run calibration and filtering, drive a segment display, communicate with an upstream host, and supervise power or peripheral activity.
The primary design consideration is BGA layout and firmware portability. A 121-MAPBGA package requires fine-pitch assembly capability and careful escape routing; the selected PCB stack-up, land pattern, solder-mask design, and assembly process must follow NXP guidance. Validate signal integrity for USB and serial interfaces and budget CPU and DMA bandwidth for simultaneous measurement and display updates.
This product page combines verified distributor specifications, manufacturer status, package information, and practical design guidance. It distinguishes confirmed values from parameters not supplied in the retrieved sources and avoids inventing pin assignments, electrical limits, or drop-in replacements that were not explicitly verified.
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