NXP Semiconductors MK20DX256VML7

Overview

MK20DX256VML7 from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M4 microcontroller with DSP extension, 256 KB flash, 64 KB RAM, and 72 MHz CPU clock. It integrates dual 16-bit SAR ADCs with PGA, 12-bit DAC, USB OTG, CAN, five UARTs, and supports -40 to 105°C operation for industrial motor control and sensor gateway applications.

For engineers reviewing the MK20DX256VML7 datasheet, MK20DX256VML7 pinout, MK20DX256VML7 application, or MK20DX256VML7 equivalent, key selection factors include its 72 MHz Cortex-M4 core, 256 KB flash/64 KB RAM memory configuration, VML7 80-pin LQFP package, -40 to 105°C extended temperature grade, and integrated analog peripherals including dual ADCs with programmable gain amplifiers.

Technical Context

The MK20DX256VML7 implements an ARM Cortex-M4 core with DSP instructions and single-precision FPU support, operating at up to 72 MHz with MCG clock generator supporting crystal (3–32 MHz), internal reference, and PLL-based configurations. Its system architecture includes a 16-channel DMA controller, low-power modes (VLPS/VLLS/LLS), and hardware CRC module for data integrity.

Analog subsystem comprises two independent 16-bit SAR ADCs each with integrated PGA (gain up to ×64), a 12-bit DAC, three analog comparators with embedded 6-bit DACs and programmable references, and voltage reference module. Communication stack includes USB full-/low-speed OTG with on-chip transceiver, one FlexCAN 2.0B module, two SPI, two I²C, five UART, and I²S interfaces.

Key Specifications

Pinout & Package

The MK20DX256VML7 is housed in an 80-pin LQFP package (14 mm × 14 mm, 0.65 mm pitch), designated by PP code "LL" per Freescale part numbering convention. This package supports full peripheral multiplexing and thermal performance suitable for industrial convection-cooled PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK20DX256VML7, MK20DN256VLH7 offers expanded I/O in a larger footprint while KEA128MT64xxx trades integration and performance for cost reduction - making MK20DX256VML7 optimal for mid-tier industrial and automotive applications needing balanced performance, analog capability, and USB/CAN connectivity in compact 80-pin LQFP.

Availability

MK20DX256VML7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, USB-capable HMI controllers, and automotive body control modules requiring stable component supply and long-term manufacturability.

Supply support for MK20DX256VML7 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, IoT, mobile, and communication infrastructure markets.

The Kinetis K20 family, including MK20DX256VML7, was designed for cost-sensitive, high-performance embedded applications demanding rich analog integration, low-power operation, and robust communication interfaces in industrial and automotive environments.

FAQ

What is the maximum operating frequency of the MK20DX256VML7?

The MK20DX256VML7 operates at a maximum CPU frequency of 72 MHz, achieved using the Multipurpose Clock Generator (MCG) in FEE mode with PLL enabled. This frequency is fully supported across the -40 to 105°C temperature range and 1.71–3.6 V supply voltage, enabling deterministic real-time execution for motor control and communication stacks. The MK20DX256VML7 maintains this speed while driving all on-chip peripherals including USB, CAN, and dual ADCs.

Does the MK20DX256VML7 include USB functionality, and what type is supported?

Yes, the MK20DX256VML7 integrates a full-/low-speed USB On-The-Go (OTG) controller with an on-chip transceiver. It supports both host and device roles without requiring an external PHY, compliant with USB 2.0 specification. The MK20DX256VML7 USB module includes dedicated endpoints, DMA support, and suspend/resume capabilities - essential for firmware updates, diagnostics, and peripheral attachment in field-deployed systems.

What analog features are integrated into the MK20DX256VML7?

The MK20DX256VML7 integrates dual 16-bit SAR ADCs, each with a programmable gain amplifier (PGA) offering gains from ×1 to ×64, a 12-bit DAC, three analog comparators (each with a 6-bit DAC and programmable reference), and a precision voltage reference module. These features enable high-fidelity sensor signal acquisition and conditioning - for example, the MK20DX256VML7 can directly digitize millivolt-level thermocouple outputs using PGA gain while maintaining 16-bit resolution.

What is the temperature grade and package type of the MK20DX256VML7?

The MK20DX256VML7 is specified for operation from -40 to 105°C (industrial/automotive extended temperature grade) and is packaged in an 80-pin LQFP (14 mm × 14 mm, 0.65 mm pitch), identified by the "VML7" suffix per Freescale's part numbering scheme. This package provides mechanical robustness and thermal performance suitable for reflow soldering and convection-cooled industrial PCBs. The MK20DX256VML7's VML7 designation confirms its qualification for harsh ambient environments.

How many communication interfaces does the MK20DX256VML7 support?

The MK20DX256VML7 supports USB full-/low-speed OTG, one FlexCAN 2.0B module, two SPI modules, two I²C modules, five UART modules, and one I²S module. This comprehensive interface set enables simultaneous connectivity to multiple subsystems - for instance, the MK20DX256VML7 can manage CAN-based vehicle networks, UART-linked wireless modems, I²C-connected sensors, and USB-hosted configuration tools concurrently within a single design.