NXP Semiconductors MK20DX256VLQ10

Overview

MK20DX256VLQ10 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, low-power operation, and integrated analog peripherals. It features 256 KB on-chip flash memory, 128 KB RAM, dual 16-bit SAR ADCs with integrated PGA, two 12-bit DACs, USB OTG, dual CAN interfaces, and operates from 1.71–3.6 V across –40 to +105°C ambient.

For engineers reviewing the MK20DX256VLQ10 datasheet, MK20DX256VLQ10 pinout, MK20DX256VLQ10 application, or MK20DX256VLQ10 equivalent, key selection considerations include its FlexMemory architecture (256 KB flash + 4 KB FlexRAM), 100 MHz core performance, LQFP-144 package compatibility, and support for deterministic motor control via eight-channel PWM timer and quadrature decoder modules.

Technical Context

The MK20DX256VLQ10 implements an ARM Cortex-M4 core with hardware DSP instructions and single-cycle MAC, enabling efficient filtering and control loop execution. Its clock system integrates a multi-purpose clock generator (MCG) supporting internal/external oscillators (3–32 MHz and 32 kHz), PLL-based frequency multiplication, and dynamic power mode transitions.

Peripherals are organized around a high-bandwidth crossbar switch, with dedicated DMA channels (16-channel controller, up to 63 request sources) servicing ADC conversions, UART transfers, and USB packet handling without CPU intervention. Memory protection unit (MPU) enforces multi-master access control for secure peripheral and memory region isolation.

Key Specifications

Pinout & Package

LQFP-144 (20 mm × 20 mm, 0.5 mm pitch) package with exposed thermal pad; pin-compatible with other K20P144M100SF2V2 family members in same footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK20DX256VLQ10, MK20DN512VLQ10 provides scalable nonvolatile memory for advanced firmware management, while KEA128MT64xxx offers a lower-cost entry point for less demanding control tasks - both retain LQFP-144 mechanical compatibility but differ in core performance, peripheral integration, and memory architecture.

Availability

MK20DX256VLQ10 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and portable medical instrumentation requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature extremes.

Supply support for MK20DX256VLQ10 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 K20 family, including MK20DX256VLQ10, was engineered for high-integration embedded control in resource-constrained environments - emphasizing analog-rich mixed-signal capability, low-power versatility, and real-time determinism for industrial and automotive applications.

FAQ

What is the maximum operating frequency of the MK20DX256VLQ10?

The MK20DX256VLQ10 operates at a maximum core frequency of 100 MHz, enabled by its ARM Cortex-M4 processor with DSP extensions. This frequency is achievable using the internal PLL driven by the main crystal oscillator (3–32 MHz) or internal reference, subject to voltage and temperature conditions within the 1.71–3.6 V and –40 to +105°C specifications. The MK20DX256VLQ10 maintains full peripheral functionality-including USB, CAN, and ADC-throughout this range.

Does the MK20DX256VLQ10 support USB device and host functionality?

Yes, the MK20DX256VLQ10 integrates a USB full-/low-speed 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 endpoints, buffer memory, and interrupt handling optimized for real-time response. The MK20DX256VLQ10's USB interface supports control, bulk, interrupt, and isochronous transfer types essential for HID, CDC, and mass storage applications.

How much Flash and RAM does the MK20DX256VLQ10 include?

The MK20DX256VLQ10 contains 256 KB of on-chip program flash memory and 128 KB of general-purpose SRAM. As a FlexMemory device, it also includes 4 KB of FlexRAM - a user-configurable memory block that can be allocated as additional RAM or emulated EEPROM. This architecture allows the MK20DX256VLQ10 to support robust firmware updates and data logging without external nonvolatile memory.

What analog peripherals are integrated into the MK20DX256VLQ10?

The MK20DX256VLQ10 integrates two independent 16-bit SAR ADCs, each with a programmable gain amplifier (PGA) offering gains from x1 to x64, two 12-bit DACs, three analog comparators with integrated 6-bit DAC references, a voltage reference module, and a low-power hardware touch sensing interface (TSI). These peripherals enable high-precision sensor signal acquisition, actuator control, and capacitive touch HMI-all without external signal conditioning components in the MK20DX256VLQ10 design.

Is the MK20DX256VLQ10 pin-compatible with other K20 family members?

The MK20DX256VLQ10 uses the LQFP-144 package (20 mm × 20 mm, 0.5 mm pitch) and shares identical pin assignments with other K20P144M100SF2V2 family devices in the same package option, including MK20DX128VLQ10, MK20DN512VLQ10, and MK20DX256VMD10 (LQFP variant only). Pin compatibility is confirmed per Freescale's K20 Sub-Family Data Sheet Rev. 3, Section 8.2 - however, register-level configuration and peripheral enablement must be verified per specific part number.