NXP Semiconductors MK12DX128VLK5

Overview

MK12DX128VLK5 from NXP Semiconductors is a 50 MHz ARM® Cortex®-M4 microcontroller with DSP instructions, 128 KB flash, 32 KB SRAM, and FlexMemory (64 KB FlexNVM + 4 KB FlexRAM), designed for cost-sensitive industrial control and sensor interface applications requiring low-power operation down to 359 nA in VLLS0 mode.

For engineers reviewing the MK12DX128VLK5 datasheet, MK12DX128VLK5 pinout, MK12DX128VLK5 application, or MK12DX128VLK5 equivalent, key selection criteria include its 80-pin LQFP package, –40 to 105°C temperature grade, 16-bit SAR ADC, dual I²C/SPI interfaces, and support for ultra-low-power stop modes with full state retention and sub-6 μs wakeup.

Technical Context

The MK12DX128VLK5 implements an ARM Cortex-M4 core with hardware DSP extensions and a configurable multipurpose clock generator supporting crystal (3–32 MHz) and internal oscillators. Its power architecture includes six low-power modes (RUN, WAIT, STOP, VLPR, VLPS, VLLSx), with VLLS0 achieving 359 nA static current while retaining RAM and register state.

Peripherals include four UARTs, two I²C modules, two SPI controllers, one I²S interface, eight-channel PWM timers, two general-purpose 2-channel timers, a 32-bit periodic interrupt timer (PIT), real-time clock (RTC), carrier modulator transmitter, and programmable delay block - all accessible via 60 GPIOs with configurable pull-ups/pull-downs and 7 pF input capacitance.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK12DX128VLK5, MK12DX256VLK5 offers double flash without altering power, timing, or I/O behavior - ideal for incremental firmware growth; MK12DN512VLK5 trades FlexMemory for raw flash density, simplifying memory management in non-data-logging use cases.

Availability

MK12DX128VLK5 is available at Aetrix Electronics and suitable for industrial automation, smart metering, and building control systems requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MK12DX128VLK5 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The Kinetis K12D family, including MK12DX128VLK5, was engineered for cost-sensitive, low-power embedded control applications demanding robust analog integration, flexible memory options, and extended temperature reliability.

FAQ

What is the maximum operating frequency of the MK12DX128VLK5?

The MK12DX128VLK5 features an ARM Cortex-M4 core rated for up to 50 MHz operation. This frequency is supported across the full voltage range (1.71–3.6 V) and temperature range (–40 to 105°C), with performance validated under FEI clock mode and typical power conditions. The MK12DX128VLK5 achieves 1.25 Dhrystone MIPS per MHz, enabling efficient execution of DSP-intensive tasks such as sensor fusion or motor control algorithms.

Does the MK12DX128VLK5 include FlexMemory, and how is it configured?

Yes, the MK12DX128VLK5 includes FlexMemory: 64 KB FlexNVM and 4 KB FlexRAM. The 'X' in the part number MK12DX128VLK5 explicitly denotes FlexMemory capability. FlexNVM can be partitioned into EEPROM-emulation sectors or additional program flash, while FlexRAM serves as fast, low-power RAM usable for critical variables or stack during ultra-low-power modes. Configuration is performed via FTFL_FLEXRAMDIS and FTFL_FLEXNVMDIS registers during initialization.

What are the lowest power consumption modes supported by the MK12DX128VLK5?

The MK12DX128VLK5 supports multiple low-power states, with VLLS0 (Very-Low-Leakage Stop Mode 0) delivering the lowest current: 359 nA at 3.0 V with POR detect disabled, and 543 nA with POR enabled - both measured at –40 to 25°C. In this mode, the core, peripherals, and clocks are halted, yet RAM and register contents are retained. Wakeup occurs in ≤6 μs via RTC alarm, GPIO edge, or LLWU interrupts, making MK12DX128VLK5 suitable for energy-harvesting and long-life battery applications.

Which communication interfaces are available on the MK12DX128VLK5?

The MK12DX128VLK5 integrates four UART modules, two I²C modules, two SPI controllers (DSPI), and one I²S interface. All UARTs support hardware flow control and automatic baud rate detection; both I²C modules comply with standard and fast-mode specifications (up to 400 kHz); SPI modules offer master/slave operation with configurable frame sizes and prescalers. These interfaces are fully multiplexed across 60 GPIOs, allowing flexible board layout and protocol coexistence - essential for the MK12DX128VLK5's role in multi-interface industrial gateways.

What is the ADC resolution and channel count of the MK12DX128VLK5?

The MK12DX128VLK5 features a single 16-bit successive approximation register (SAR) ADC with up to 16 single-ended or 8 differential input channels. It supports programmable conversion speeds, hardware averaging (up to 32 samples), and configurable reference voltages (VREFH/VREFL). The ADC is capable of 1 MSPS maximum sample rate and includes built-in calibration registers. This high-resolution analog capability - combined with two analog comparators - makes the MK12DX128VLK5 well-suited for precision sensor measurement applications where the MK12DX128VLK5 serves as the primary data acquisition engine.