NXP Semiconductors MK12DX256VMC5

Overview

MK12DX256VMC5 from NXP (formerly Freescale) is a 32-bit ARM Cortex-M4 microcontroller with DSP extensions, designed for embedded control applications requiring real-time signal processing and low-power operation. It features 256 KB on-chip program flash, 64 KB RAM, 16-bit SAR ADC, 12-bit DAC, USB Device Charger Detect, and operates from 1.71–3.6 V at up to 50 MHz across –40 to 105°C ambient.

For engineers reviewing the MK12DX256VMC5 datasheet, MK12DX256VMC5 pinout, MK12DX256VMC5 application, or MK12DX256VMC5 equivalent, key selection considerations include FlexMemory support (256 KB flash + 64 KB FlexNVM), multi-mode power management (VLLS0 down to 0.36 µA), integrated analog peripherals, and Kinetis K12 family compatibility for scalable firmware reuse.

Technical Context

The MK12DX256VMC5 implements an ARM Cortex-M4 core with hardware DSP instructions and single-cycle MAC, delivering 1.25 Dhrystone MIPS per MHz at 50 MHz. Its memory subsystem includes 256 KB program flash with FlexNVM partitioning (64 KB FlexNVM + 4 KB FlexRAM), enabling EEPROM-like data storage without external components.

System-level timing is managed by a multi-purpose clock generator supporting crystal oscillators (3–32 MHz and 32 kHz), internal reference, and programmable PLL paths. Peripheral integration includes eight-channel PWM timer, two 2-channel general-purpose timers with quadrature decode, RTC, carrier modulator transmitter, and four UARTs - all synchronized to configurable bus and system clocks.

Key Specifications

Pinout & Package

Package: 121-pin MAPBGA (8 mm × 8 mm, MC suffix), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MK12DX256VMC5, MK12DN512VMC5 trades FlexNVM for double flash capacity, while MK20DX256VLH7 offers higher clock speed and LQFP packaging at the cost of thermal density and board space efficiency.

Availability

MK12DX256VMC5 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, and automotive body electronics requiring stable component supply, long-term lifecycle support, and qualified extended-temperature operation.

Supply support for MK12DX256VMC5 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 expertise in ARM-based microcontrollers and edge processing.

The MK12DX256VMC5 belongs to the Kinetis K12 sub-family, designed specifically for cost-sensitive, low-power embedded control applications demanding integrated analog peripherals, robust flash reliability, and extended temperature operation.

FAQ

What is the maximum operating frequency of the MK12DX256VMC5?

The MK12DX256VMC5 operates at a maximum system and core clock frequency of 50 MHz, as specified in the K12 Sub-Family Data Sheet Rev. 4. This frequency is achieved using the internal MCG clock generator in FEI or PBE modes with appropriate crystal or external clock source. The MK12DX256VMC5 does not support frequencies above 50 MHz, and exceeding this limit violates operating requirements and may cause functional failure.

Does the MK12DX256VMC5 include FlexMemory, and how is it configured?

Yes, the MK12DX256VMC5 includes FlexMemory: 64 KB FlexNVM and 4 KB FlexRAM. As indicated by the 'X' in the part number (MK12DX256VMC5), it supports FlexMemory configuration. This allows runtime reconfiguration of FlexNVM into EEPROM-like sectors (100k write cycles) and FlexRAM into fast SRAM or data flash - all managed by the FTFL controller without external components.

What are the supported low-power modes and their typical current consumption for MK12DX256VMC5?

The MK12DX256VMC5 supports seven low-power modes. At 3.0 V and –40 to 25°C, typical currents are: VLLS0 = 0.54 µA (with POR detect), VLPS = 7.33 µA, LLS = 3.14 µA, and VLLS3 = 2.19 µA. These values are measured with specific clock configurations and peripherals disabled, as documented in Table 6 of the K12P121M50SF4 datasheet. Actual consumption depends on active peripherals and clock gating.

Can the MK12DX256VMC5 be used in automotive applications, and what qualification does it meet?

Yes, the MK12DX256VMC5 is qualified for automotive body electronics applications. Its 'V' temperature grade (–40 to 105°C) and AEC-Q100 stress test compliance - confirmed by Freescale's qualification status ('M' prefix) and extended-temperature characterization - make it suitable for under-dash modules, seat controllers, and lighting systems where ambient conditions exceed commercial-grade limits.

What communication interfaces are integrated into the MK12DX256VMC5?

The MK12DX256VMC5 integrates four UART modules, two SPI modules, two I²C modules, one I²S audio interface, and a USB 2.0 full-speed device controller with built-in charger detection. All interfaces support DMA, pin multiplexing, and independent clock gating. No CAN, Ethernet, or SDIO interfaces are present - those require external transceivers or alternate Kinetis families like K2x or KV series.