NXP Semiconductors MK20DX64VFM5

Overview

MK20DX64VFM5 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 - used in industrial sensor nodes and motor control edge devices.

For engineers reviewing the MK20DX64VFM5 datasheet, MK20DX64VFM5 pinout, MK20DX64VFM5 application, or MK20DX64VFM5 equivalent, key selection criteria include its 50 MHz core frequency, FlexMemory support (not present in DN variants), integrated USB transceiver, low-leakage stop modes down to 0.176 µA, and QFN-32 package compatibility with space-constrained PCB layouts.

Technical Context

The MK20DX64VFM5 implements an ARM Cortex-M4 core with hardware DSP instructions and no FPU, delivering 1.25 Dhrystone MIPS/MHz. Its memory subsystem includes 64 KB on-chip flash, 16 KB SRAM, and FlexMemory architecture enabling configurable partitioning of up to 32 KB FlexNVM and 2 KB FlexRAM - allowing EEPROM-like wear-leveling and data logging without external storage.

Clock system comprises dual oscillators (3–32 MHz main, 32 kHz RTC), multi-purpose clock generator (MCG), and programmable delay block. Peripheral set includes eight-channel PWM timer, two UARTs, SPI, I²C, I²S, real-time clock, CRC module, and analog peripherals: 16-bit ADC with 16 channels, two comparators with 6-bit DACs, and low-leakage wakeup unit.

Key Specifications

Pinout & Package

Package: 32-pin QFN (5 mm × 5 mm, 0.5 mm pitch), exposed thermal pad - optimized for thermal dissipation in compact industrial enclosures and enables automated reflow assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK20DN64VFM5, the MK20DX64VFM5 adds FlexMemory for robust data retention; compared with K22FN128VFM5, it trades raw performance and memory for lower power and proven qualification in extended temperature industrial deployments.

Availability

MK20DX64VFM5 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, medical infusion pumps, and automotive body controllers requiring stable component supply and long-term lifecycle assurance.

Supply support for MK20DX64VFM5 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 deep expertise in ARM-based microcontrollers and edge processing.

The MK20DX64VFM5 belongs to the Kinetis K20 family - engineered for cost-effective, low-power embedded control in thermally constrained environments where mixed-signal integration and Flash+FlexMemory flexibility are critical.

FAQ

What is the maximum operating frequency of the MK20DX64VFM5?

The MK20DX64VFM5 operates at a maximum core/system clock frequency of 50 MHz. This is specified in the K20 Sub-Family Data Sheet (Rev. 4, May 2012) under Device Clock Specifications. The 50 MHz limit applies in normal run mode; in Very-Low-Power Run (VLPR) mode, the maximum is reduced to 4 MHz to minimize active power consumption while retaining full peripheral functionality.

Does the MK20DX64VFM5 include an integrated USB transceiver?

Yes, the MK20DX64VFM5 includes a full-/low-speed USB On-The-Go controller with an integrated transceiver - no external PHY is required. As confirmed in the K20 Sub-Family Data Sheet Section 6.8.1, this feature supports plug-and-play connectivity for firmware updates, data logging, and host/device role switching using only the USB_DP and USB_DM pins with minimal external components.

What memory architecture does the MK20DX64VFM5 use, and how does it differ from the DN variant?

The MK20DX64VFM5 uses FlexMemory architecture, enabling configurable partitioning of up to 32 KB FlexNVM and 2 KB FlexRAM - supporting EEPROM emulation and data logging with wear leveling. In contrast, the MK20DN64VFM5 has program flash only (no FlexNVM/FlexRAM). This distinction is defined in the part number format ('X' = FlexMemory, 'N' = flash-only) and verified in the K20 Sub-Family Data Sheet Section 2.3.

What is the operating temperature range supported by the MK20DX64VFM5?

The MK20DX64VFM5 is rated for an ambient operating temperature range of –40 to 105°C, as indicated by the 'V' suffix in its part number (per K20 Sub-Family Data Sheet Table 2.3). This extended temperature grade qualifies the device for under-hood automotive applications, industrial PLC modules, and outdoor sensor enclosures without derating.

Which package type is used for the MK20DX64VFM5, and what are its key mechanical attributes?

The MK20DX64VFM5 uses a 32-pin QFN package identified by 'FM' in the part number - specifically a 5 mm × 5 mm body with 0.5 mm pitch and exposed thermal pad (per K20 Sub-Family Data Sheet Section 2.3 and Figure 7-1). This package supports automated assembly, offers low thermal resistance (<40 °C/W junction-to-case), and fits high-density PCB layouts typical in space-constrained edge devices.