NXP Semiconductors MK20DX64VFT5

Overview

MK20DX64VFT5 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 and low-power operation. It features 64 KB program flash, 16 KB RAM, 16-bit SAR ADC, USB OTG controller, and operates from 1.71–3.6 V across –40 to 105°C ambient temperature - deployed in industrial motor control systems.

For engineers reviewing the MK20DX64VFT5 datasheet, MK20DX64VFT5 pinout, MK20DX64VFT5 application, or MK20DX64VFT5 equivalent, key selection criteria include its 50 MHz CPU frequency, FlexMemory support (not present in this variant), 48-pin QFN package, USB full-/low-speed On-the-Go capability, and verified low-leakage stop mode current down to 0.176 μA at –40 to 25°C.

Technical Context

The MK20DX64VFT5 implements an ARM Cortex-M4 core with hardware DSP instructions and no FPU, running at up to 50 MHz. Its clock system includes dual crystal oscillators (3–32 MHz and 32 kHz), a multi-purpose clock generator (MCG), and supports multiple low-power modes including VLLS0 with POR detect disabled.

It integrates a 16-bit SAR ADC with configurable resolution and sampling rate, two analog comparators each with integrated 6-bit DAC and programmable reference, and eight-channel PWM timer with motor control extensions. Communication interfaces include three UARTs, I²C, SPI, I²S, and USB OTG with on-chip transceiver - all operating within the same 1.71–3.6 V supply range.

Key Specifications

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm, FT suffix), thermally enhanced with exposed pad for improved heat dissipation in compact industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK20DX64VFT5, MK20DN64VFT5 removes DSP capability at identical cost and power profile, while MK20DX128VFT5 trades higher BOM cost for scalable memory headroom - both retain pin compatibility and identical peripheral sets.

Availability

MK20DX64VFT5 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, medical portable monitors, and building automation controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MK20DX64VFT5 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 markets, with roots in Freescale's Kinetis portfolio.

The Kinetis K20 series, including MK20DX64VFT5, was engineered for cost-sensitive, low-power embedded control applications demanding real-time responsiveness, mixed-signal integration, and robust qualification across industrial temperature grades.

FAQ

What is the maximum operating frequency of the MK20DX64VFT5?

The MK20DX64VFT5 operates at a maximum system and core clock frequency of 50 MHz. This is achieved using the internal MCG in FEI or PEE mode with appropriate crystal or external clock source. The 50 MHz limit applies to both CPU and bus clocks, and USB full-speed operation requires the system clock to be ≥20 MHz and ≤48 MHz per specification.

Does the MK20DX64VFT5 include FlexMemory (FlexNVM/FlexRAM)?

No, the MK20DX64VFT5 does not include FlexMemory. Although the 'X' in the part number indicates FlexMemory capability within the K20 family, this specific variant (MK20DX64VFT5) is configured with 64 KB program flash only and 16 KB SRAM - it lacks the dedicated FlexNVM and FlexRAM blocks found in FlexMemory-enabled derivatives like MK20DX64VLH5.

What package type and pin count does the MK20DX64VFT5 use?

The MK20DX64VFT5 uses a 48-pin QFN package (7 mm × 7 mm) denoted by the 'FT' suffix in the part number. It features an exposed thermal pad and is RoHS-compliant. Pin assignments follow the K20 Sub-Family pinout specification, with multiplexed functions including GPIO, UART, I²C, SPI, ADC, PWM, and USB signals.

What is the minimum supply voltage for reliable operation of the MK20DX64VFT5?

The MK20DX64VFT5 requires a minimum supply voltage of 1.71 V on both VDD and VDDA pins for guaranteed operation across its full temperature range (–40 to 105°C). Below 1.71 V, brown-out reset (BOR) and low-voltage detect (LVD) circuits may trigger, and flash programming becomes unreliable. The absolute minimum rating is –0.3 V, but operation below 1.71 V is outside specification.

How does the MK20DX64VFT5 support low-power design?

The MK20DX64VFT5 supports six power modes including RUN, WAIT, STOP, VLPR, VLPS, and VLLS. In VLLS0 mode with POR detect disabled, it achieves as low as 0.176 μA at –40 to 25°C. Wakeup sources include GPIO, RTC alarm, and LPUART - enabling rapid transition to active state. Peripheral clock gating and individual module disable further reduce dynamic power consumption during partial operation.