NXP Semiconductors MK20DX256ZVLK10

Overview

MK20DX256ZVLK10 from NXP (formerly Freescale) is a 32-bit ARM Cortex-M4 microcontroller with DSP extensions, operating at up to 100 MHz, featuring 256 KB on-chip flash memory and 128 KB RAM in an 80-pin LQFP package. It integrates dual 16-bit SAR ADCs, two 12-bit DACs, three analog comparators, USB OTG, dual CAN, six UARTs, and supports industrial temperature range (–40 to 105°C) for embedded control applications.

For engineers reviewing the MK20DX256ZVLK10 datasheet, MK20DX256ZVLK10 pinout, MK20DX256ZVLK10 application, or MK20DX256ZVLK10 equivalent, key selection considerations include its FlexMemory architecture (256 KB flash + 4 KB FlexRAM), low-power stop modes down to 2.1 µA, integrated TSI touch interface, and dual CAN bus support for automotive and industrial networking.

Technical Context

The MK20DX256ZVLK10 implements the ARMv7E-M architecture with hardware floating-point unit disabled (M4 core only), uses a multi-purpose clock generator supporting crystal oscillators (3–32 MHz and 32 kHz), and features a memory protection unit (MPU) with multi-master protection for secure real-time execution. Its FlexBus external interface enables parallel memory expansion while EzPort supports serial programming.

System-level power management includes eight low-power modes (VLPR, VLPW, LLS, VLLS1–4), a software watchdog, external watchdog monitor, and low-leakage wakeup unit. Peripheral integration centers on deterministic timing: eight-channel PWM timer, two quadrature decoder timers, RTC with battery backup, and carrier modulator transmitter for IR control.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (12 mm × 12 mm), 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 MK20DX256ZVLK10, MK20DN512ZVMD10 offers greater flash capacity but sacrifices FlexRAM programmability and increases PCB complexity, while KEA128MT64xxx reduces cost and power at the expense of real-time processing capability and peripheral richness.

Availability

MK20DX256ZVLK10 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart energy metering, and portable medical devices requiring stable component supply, long-term lifecycle support, and extended temperature operation.

Supply support for MK20DX256ZVLK10 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 applications, with deep expertise in ARM-based microcontrollers and edge processing.

The Kinetis K20 family, including MK20DX256ZVLK10, was designed for cost-sensitive, high-reliability embedded control in harsh environments-emphasizing low-power operation, analog integration, and functional safety readiness.

FAQ

What is the maximum operating frequency of the MK20DX256ZVLK10?

The MK20DX256ZVLK10 operates at a maximum CPU frequency of 100 MHz, enabled by its ARM Cortex-M4 core with DSP extensions. This frequency is achievable across the full industrial temperature range (–40 to 105°C) when supplied with 1.71–3.6 V and using the internal PLL with appropriate clock source configuration. The MK20DX256ZVLK10 delivers 1.25 Dhrystone MIPS per MHz, resulting in 125 DMIPS performance.

Does the MK20DX256ZVLK10 support USB device mode without an external transceiver?

Yes, the MK20DX256ZVLK10 integrates a full-speed/low-speed USB On-The-Go controller with an on-chip transceiver, eliminating the need for an external PHY. It supports device, host, and OTG roles. Proper termination (1.5 kΩ pull-up on USB_DP) and VREGIN supply (3.0–3.6 V) are required for reliable enumeration. The MK20DX256ZVLK10's USB module complies with USB 2.0 specification and supports control, bulk, interrupt, and isochronous transfer types.

How much FlexRAM does the MK20DX256ZVLK10 include, and what is its purpose?

The MK20DX256ZVLK10 includes 4 KB of FlexRAM, part of its FlexMemory architecture. This memory can be dynamically configured as either additional program flash (for firmware updates) or high-speed SRAM (for critical data buffers), without requiring external memory. Unlike standard RAM, FlexRAM retains its configuration across resets and supports EEPROM-like wear leveling when used as data storage. This capability is unique to the "X" variant in the K20 family and is not present in "N"-suffix parts like MK20DN512ZVMD10.

What analog peripherals are integrated into the MK20DX256ZVLK10?

The MK20DX256ZVLK10 integrates two 16-bit SAR ADCs with integrated programmable gain amplifiers (up to x64), two 12-bit DACs, three analog comparators (each with a 6-bit DAC and programmable reference), and a precision voltage reference module. These peripherals support simultaneous sampling, hardware-triggered conversions, and low-noise operation across the full temperature range. The MK20DX256ZVLK10's analog subsystem is optimized for sensor interfacing, closed-loop control, and calibration tasks in industrial and automotive applications.

Is the MK20DX256ZVLK10 qualified for automotive applications?

The MK20DX256ZVLK10 is specified for industrial temperature range (–40 to 105°C) and carries AEC-Q100 stress test qualification per Freescale/NXP documentation for the K20 family. While not explicitly branded as "automotive grade" in its part number, it meets key automotive requirements including dual CAN interfaces, robust EMC behavior, and extended temperature operation. It is widely deployed in body electronics and chassis control modules. For ASIL-B functional safety applications, designers must implement additional software/hardware measures beyond the base MK20DX256ZVLK10 capabilities.