NXP Semiconductors MK20DX256VLL10

Overview

MK20DX256VLL10 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, mixed-signal integration, and low-power operation. It features 256 KB on-chip flash memory, 64 KB RAM, operates from 1.71–3.6 V, supports –40 to 105°C ambient temperature, and delivers 100 MHz core performance - used in industrial motor control systems with integrated ADCs, PWM timers, and CAN interfaces.

For engineers reviewing the MK20DX256VLL10 datasheet, MK20DX256VLL10 pinout, MK20DX256VLL10 application, or MK20DX256VLL10 equivalent, key selection criteria include verified 100 MHz Cortex-M4 execution, dual 16-bit SAR ADCs with PGA, USB OTG + dual CAN support, LQFP-100 package compatibility, and confirmed VLLS3 stop-mode current ≤23 µA at 3.0 V.

Technical Context

This device belongs to the Kinetis K20 sub-family and implements an ARM Cortex-M4 core with hardware DSP instructions and single-cycle MAC operations. Its memory subsystem includes 256 KB program flash (non-FlexMemory), 64 KB SRAM, EzPort serial programming interface, and FlexBus external bus controller supporting asynchronous peripherals.

The clock system integrates three oscillators: 3–32 MHz main crystal oscillator, 32 kHz RTC crystal oscillator, and multi-purpose clock generator with internal reference. Peripheral set includes two 16-bit SAR ADCs (each with integrated PGA up to ×64), 12-bit DAC, eight-channel PWM timer, two quadrature decoder timers, USB full/low-speed OTG with on-chip transceiver, and two CAN 2.0B modules - all operating within the same voltage and thermal envelope.

Key Specifications

Pinout & Package

LQFP-100 (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad - provides mechanical stability, thermal dissipation for sustained 100 MHz operation, and compatibility with standard PCB assembly processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK20DX256VLL10, MK20DN512VLL10 offers scalable memory without architectural or layout changes, while KEA128M64S2 trades performance and integration for cost and size - making the MK20DX256VLL10 optimal for mid-tier real-time control where balanced compute, analog, and connectivity are essential.

Availability

MK20DX256VLL10 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, medical infusion devices, and smart energy metering requiring stable component supply across extended product lifecycles.

Supply support for MK20DX256VLL10 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 Kinetis K20 series was engineered for real-time embedded control in harsh environments, integrating high-precision analog, deterministic timing, and robust communication interfaces into a single low-power MCU platform.

FAQ

What is the maximum operating frequency of the MK20DX256VLL10?

The MK20DX256VLL10 operates at a maximum core frequency of 100 MHz, enabled by its ARM Cortex-M4 core with DSP extensions. This frequency is supported across the full –40 to 105°C temperature range and 1.71–3.6 V supply voltage. The MK20DX256VLL10 achieves 125 DMIPS and 1.25 Dhrystone MIPS per MHz, validated under FEI and FEE clock modes with appropriate oscillator configurations.

Does the MK20DX256VLL10 support USB device functionality without an external PHY?

Yes, the MK20DX256VLL10 integrates a full-speed/low-speed USB On-The-Go controller with an on-chip transceiver, eliminating the need for an external USB PHY. It supports USB device, host, and OTG roles, and includes internal termination resistors and voltage regulators - allowing direct connection of USB_DP and USB_DM to a standard USB connector when used in device mode.

How much SRAM does the MK20DX256VLL10 include, and is it battery-backed?

The MK20DX256VLL10 includes 64 KB of general-purpose SRAM, mapped into the ARM Cortex-M4 address space. While the SRAM itself is not battery-backed, the device supports low-leakage stop modes (VLLS1–VLLS3) that retain full SRAM contents using only the main VDD supply. For true battery-backed retention, the MK20DX256VLL10 provides a separate VBAT domain for the RTC and associated registers, but not for main SRAM.

What analog peripherals are integrated into the MK20DX256VLL10?

The MK20DX256VLL10 integrates two independent 16-bit SAR ADCs, each with a programmable gain amplifier (PGA) supporting gains from ×1 to ×64, a 12-bit DAC, three analog comparators (each with a 6-bit DAC and programmable reference), two transimpedance amplifiers, and a precision voltage reference module. These are powered by dedicated VDDA/VSSA pins to ensure noise isolation from digital domains.

Is the MK20DX256VLL10 pin-compatible with other K20 family members?

The MK20DX256VLL10 uses the LQFP-100 package (PP = LL in part number), and shares identical pinout and signal mapping with other K20 devices in the same package variant, including MK20DN512VLL10. Signal multiplexing, power pin placement, and peripheral pin assignments are consistent across the K20P100M100SF2V2 datasheet-defined LQFP-100 footprint - enabling direct replacement where flash/RAM requirements align.