NXP Semiconductors MK20DN128VLF5

Overview

MK20DN128VLF5 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 and low-power operation. It features 128 KB on-chip flash, 16 KB RAM, 16-bit SAR ADC, USB OTG controller, and operates at up to 50 MHz across –40°C to 105°C ambient temperature - deployed in industrial motor control and sensor fusion systems.

For engineers reviewing the MK20DN128VLF5 datasheet, MK20DN128VLF5 pinout, MK20DN128VLF5 application, or MK20DN128VLF5 equivalent, key selection considerations include its FlexMemory-free configuration (flash-only), LQFP-48 package, 50 MHz max core frequency, integrated USB transceiver, and support for multiple low-power stop modes down to 0.176 µA.

Technical Context

The MK20DN128VLF5 implements an ARM Cortex-M4 core with hardware DSP instructions and single-cycle MAC, enabling efficient execution of filter algorithms and motor control loops. Its clock system includes dual crystal oscillators (3–32 MHz and 32 kHz), a multi-purpose clock generator (MCG), and configurable PLL paths supporting precise timing for USB, ADC sampling, and PWM generation.

System-level integration includes a 4-channel DMA controller servicing 41 request sources, hardware CRC module for firmware integrity, 128-bit unique chip ID, and flexible low-power architecture with seven distinct power modes - including VLLS0 (very low-leakage stop mode 0) with POR detect circuit disabled, achieving sub-µA retention current.

Key Specifications

Pinout & Package

Package: 48-pin LQFP (7 mm × 7 mm), lead-free, RoHS-compliant, moisture sensitivity level 3 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK20DX128VLF5 and K22F512VLH12, the MK20DN128VLF5 offers the lowest cost and smallest power footprint among Kinetis K2x devices with 128 KB flash, making it ideal for resource-constrained, thermally sensitive embedded control where FlexMemory or FPU are unnecessary.

Availability

MK20DN128VLF5 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, medical diagnostic equipment, and automotive body control modules requiring stable component supply and long-term manufacturability.

Supply support for MK20DN128VLF5 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.

The MK20DN128VLF5 belongs to the Kinetis K20 family - a line of energy-efficient, mixed-signal ARM Cortex-M4 microcontrollers engineered for real-time control, sensor processing, and USB-enabled edge devices in harsh environments.

FAQ

What is the maximum operating frequency of the MK20DN128VLF5?

The MK20DN128VLF5 operates at a maximum core/system clock frequency of 50 MHz. This is achieved using the internal PLL driven by the main crystal oscillator (3–32 MHz). The device supports multiple clock configurations including FEI (internal reference), FBE (external crystal), and PEE (PLL-engaged) modes, all validated across its full –40°C to 105°C temperature range. At 50 MHz, the MK20DN128VLF5 delivers 1.25 Dhrystone MIPS per MHz for deterministic real-time performance.

Does the MK20DN128VLF5 include FlexMemory?

No, the MK20DN128VLF5 does not include FlexMemory. The 'N' in the part number denotes "program flash only", meaning it contains 128 KB of main program flash but no FlexNVM or FlexRAM. In contrast, the MK20DX128VLF5 ('X') variant integrates 32 KB FlexNVM and 2 KB FlexRAM for EEPROM emulation. The MK20DN128VLF5 is optimized for cost-sensitive applications where persistent data storage is handled externally or not required.

What package type is used for the MK20DN128VLF5?

The MK20DN128VLF5 uses a 48-pin LQFP package (7 mm × 7 mm), indicated by the 'LF' suffix in the part number. This RoHS-compliant, lead-free package has a moisture sensitivity level (MSL) of 3 per J-STD-020 and is suitable for standard reflow assembly processes. Pin assignments follow the K20 Sub-Family pinout specification, with dedicated VDD/VSS pairs, crystal inputs, USB differential signals, and multiplexed GPIO supporting all major peripherals.

Can the MK20DN128VLF5 operate from a single 3.3 V supply?

Yes, the MK20DN128VLF5 is fully specified to operate from a single 3.3 V supply across its entire temperature range (–40°C to 105°C). Its voltage operating requirement is 1.71 V to 3.6 V, and all electrical characteristics - including ADC accuracy, USB transceiver compliance, and flash programming - are guaranteed at 3.3 V. The device also supports lower voltages (e.g., 1.8 V) for ultra-low-power operation, with corresponding reductions in maximum clock frequency and peripheral enablement.

What USB capabilities does the MK20DN128VLF5 support?

The MK20DN128VLF5 integrates a full-/low-speed USB On-The-Go (OTG) controller with an on-chip transceiver, supporting USB 2.0 compliance without external PHY components. It operates in device, host, or OTG mode, with dedicated USB_DP and USB_DM pins. The USB module supports control, bulk, interrupt, and isochronous transfers, and is functional at system clock frequencies ≥20 MHz. USB regulator (VREG) output is internally generated, and the device meets USB electrical specifications for ESD tolerance and signal integrity per the K20P48M50SF0 datasheet.