NXP Semiconductors MK20DX128VLH5

Overview

MK20DX128VLH5 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 128 KB on-chip flash, 16 KB RAM, 50 MHz maximum CPU frequency, -40 to 105°C operating temperature, and integrated USB OTG, ADC, timers, and communication peripherals - deployed in industrial motor control systems.

For engineers reviewing the MK20DX128VLH5 datasheet, MK20DX128VLH5 pinout, MK20DX128VLH5 application, or MK20DX128VLH5 equivalent, key selection considerations include its FlexMemory capability (128 KB flash + 2 KB FlexRAM), 16-bit SAR ADC resolution, USB full-speed OTG support, and LQFP-64 package compatibility with thermal and ESD robustness for harsh environments.

Technical Context

The MK20DX128VLH5 implements an ARM Cortex-M4 core with hardware DSP instructions and single-cycle MAC operations, enabling deterministic execution of digital filter and motor control algorithms. Its clock system integrates a multi-purpose clock generator (MCG) supporting crystal oscillators (3–32 MHz and 32 kHz), internal reference, and multiple low-power modes including VLLS0 with sub-μA current draw.

Peripherals are organized around a crossbar switch architecture with configurable pin multiplexing, supporting simultaneous operation of USB OTG, three UARTs, I²C, SPI, I²S, and eight-channel PWM timer - all synchronized to a common bus clock domain with DMA-driven data movement across memory-mapped modules.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm), lead-free, 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 K20DN128VLH5, MK20DX128VLH5 adds FlexRAM for data logging and USB OTG for direct PC interface; versus MKE15Z128VLH7, it delivers higher compute throughput and richer analog/peripheral integration at the expense of higher power in active modes.

Availability

MK20DX128VLH5 is available at Aetrix Electronics and suitable for industrial motor control, portable medical devices, USB human interface devices, and smart building sensor nodes requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MK20DX128VLH5 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in ARM-based microcontrollers and edge processing.

The MK20DX128VLH5 belongs to the Kinetis K20 family - engineered for real-time embedded control in resource-constrained, thermally demanding environments where mixed-signal integration, low-power operation, and USB connectivity are essential.

FAQ

What is the maximum operating frequency of the MK20DX128VLH5?

The MK20DX128VLH5 operates at a maximum CPU frequency of 50 MHz, enabled by its ARM Cortex-M4 core with DSP extensions. This frequency is supported across the full 1.71–3.6 V supply range and –40 to 105°C temperature range, with flash access configured for zero wait states at 25 MHz bus clock. The MK20DX128VLH5 achieves 1.25 Dhrystone MIPS per MHz, making it suitable for real-time signal processing tasks.

Does the MK20DX128VLH5 support USB device and host functionality?

Yes, the MK20DX128VLH5 integrates a full-/low-speed USB On-The-Go (OTG) controller with an on-chip transceiver, supporting both device and host roles without external PHY components. It complies with USB 2.0 specification and includes dedicated USB voltage regulator (VREG) and detection circuitry. The MK20DX128VLH5's USB module supports standard descriptors, endpoint configuration, and suspend/resume - validated in Freescale's K20P64M50SF0 datasheet Rev. 4.

What memory types are available on the MK20DX128VLH5?

The MK20DX128VLH5 includes 128 KB of on-chip program flash memory, 16 KB of general-purpose SRAM, and 2 KB of FlexRAM - part of its FlexMemory architecture. FlexRAM can be dynamically partitioned between RAM and nonvolatile storage (emulated EEPROM), enabling data retention during power loss. Unlike the K20DN variant, the 'X' in MK20DX128VLH5 explicitly denotes FlexMemory capability per Freescale's part numbering scheme.

What is the operating temperature range for the MK20DX128VLH5?

The MK20DX128VLH5 is rated for operation from –40°C to +105°C ambient temperature, as indicated by the 'V' suffix in its part number per Freescale's K20 Sub-Family Data Sheet. This extended temperature grade qualifies it for industrial control cabinets, automotive under-hood auxiliary systems, and outdoor infrastructure deployments where thermal cycling and sustained high-temperature operation are expected.

How many analog-to-digital converter (ADC) channels does the MK20DX128VLH5 support?

The MK20DX128VLH5 integrates a 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, and trigger sources including PDB and timers. The ADC operates across the full 1.71–3.6 V supply range and maintains specified linearity and offset performance within the –40 to 105°C temperature range - confirmed in Section 6.6.1 of the K20P64M50SF0 datasheet.