NXP Semiconductors MK12DX128VLH5

Overview

MK12DX128VLH5 from NXP Semiconductors (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 128 KB program flash, 64 KB RAM, operates at up to 50 MHz, supports –40°C to +105°C ambient temperature, and integrates 16-bit SAR ADC, 12-bit DAC, USB Device Charger Detect, and multiple low-power modes.

For engineers reviewing the MK12DX128VLH5 datasheet, MK12DX128VLH5 pinout, MK12DX128VLH5 application, or MK12DX128VLH5 equivalent, key selection considerations include its FlexMemory architecture (128 KB flash + 64 KB FlexNVM), 64-pin LQFP package, VLLS0 stop-mode current as low as 0.54 µA, and dual-oscillator clock system supporting 3–32 MHz crystal and 32 kHz RTC crystal.

Technical Context

The MK12DX128VLH5 implements an ARM Cortex-M4 core with hardware DSP instructions and single-cycle MAC, enabling deterministic audio or motor control algorithms. Its memory subsystem includes dedicated FlexNVM (64 KB) and FlexRAM (4 KB), allowing EEPROM-like wear-leveling and data logging without external components.

System-level timing is managed by the Multi-purpose Clock Generator (MCG) with three operational modes (FEI, FBE, BLPE), supporting dynamic clock scaling between 50 MHz run mode and 4 MHz VLPR mode. Peripheral clock gating and eight low-power modes-including VLLS0 with POR detect-enable sub-µA retention in battery-backed applications.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm), RoHS-compliant, moisture sensitivity level 3 (MSL3), rated for reflow up to 260°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK12DX128VLH5, K22F512VLH12 offers greater processing headroom but increases BOM cost and power in always-on sensing; RA4M1 R7FA4M1AB3CFM adds hardware security yet sacrifices sub-µA RTC retention - making MK12DX128VLH5 optimal for cost-sensitive, battery-constrained industrial controllers needing robust data persistence.

Availability

MK12DX128VLH5 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, automotive body electronics, and portable medical sensors requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MK12DX128VLH5 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in ARM-based microcontrollers and mixed-signal integration.

The MK12DX128VLH5 belongs to the Kinetis K12 family - engineered for cost-optimized, low-power embedded control in harsh environments, emphasizing analog integration, flexible memory architecture, and robust clocking for deterministic real-time operation.

FAQ

What is the maximum system clock frequency supported by the MK12DX128VLH5?

The MK12DX128VLH5 supports a maximum system clock frequency of 50 MHz, achieved using the internal Multi-purpose Clock Generator (MCG) in FEI or FBE mode with an external crystal. This frequency is validated across the full –40°C to +105°C operating range and enables real-time execution of DSP-intensive tasks such as motor control and audio processing. The MK12DX128VLH5 datasheet specifies fSYS ≤ 50 MHz as an absolute maximum operating behavior under all voltage and temperature conditions.

Does the MK12DX128VLH5 include on-chip EEPROM functionality?

Yes, the MK12DX128VLH5 includes 64 KB of FlexNVM and 4 KB of FlexRAM, which together provide hardware-emulated EEPROM functionality. Unlike traditional EEPROM, this implementation allows byte-level writes, wear leveling handled in hardware, and no separate erase cycles - enabling reliable data logging and configuration storage without external components. This capability is intrinsic to the MK12DX128VLH5's FlexMemory architecture and does not require additional firmware drivers.

What is the lowest achievable current consumption in stop mode for the MK12DX128VLH5?

The MK12DX128VLH5 achieves a typical current consumption of 0.54 µA in Very-Low-Leakage Stop Mode 0 (VLLS0) with POR detect enabled, measured at 3.0 V and –40°C to +25°C ambient. This mode retains full register context and allows wake-up via RTC alarm or GPIO, making it ideal for battery-backed applications like smart meters and portable sensors. The MK12DX128VLH5 specification confirms this value in Table 6 of the K12P64M50SF4 datasheet under IDD_VLLS0 conditions.

Can the MK12DX128VLH5 operate from a single 1.8 V supply rail?

Yes, the MK12DX128VLH5 is fully specified to operate from a single 1.8 V supply rail across its entire –40°C to +105°C temperature range. Its voltage operating requirement is 1.71–3.6 V for both VDD and VDDA, and power consumption data (e.g., IDD_RUN = 12.98 mA typ. at 1.8 V) is explicitly characterized at this voltage. This makes the MK12DX128VLH5 compatible with energy-harvesting systems and low-voltage battery designs where higher rails are unavailable.

Which communication interfaces are available on the MK12DX128VLH5 for connecting to external peripherals?

The MK12DX128VLH5 integrates four UART modules, two I²C modules, one SPI module (DSPI), one I²S module, and USB Device with Charger Detect. These interfaces support common industrial protocols including Modbus RTU (UART), SMBus (I²C), and audio streaming (I²S). Notably, the USB interface includes integrated charger detection logic, eliminating the need for external resistive networks - a feature confirmed in the MK12DX128VLH5's peripheral description and electrical specifications.