NXP Semiconductors MK20DN32VLF5

Overview

MK20DN32VLF5 from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M4 core MCU with DSP extension, operating at up to 50 MHz, featuring 32 KB program flash, 16 KB RAM, and -40°C to 105°C industrial temperature range in 48-pin LQFP package. It integrates USB OTG, multiple UARTs, SPI, I²C, 16-bit ADC, analog comparators, RTC, and low-power timers - deployed in motor control, industrial sensing, and embedded HMI systems.

For engineers reviewing the MK20DN32VLF5 datasheet, MK20DN32VLF5 pinout, MK20DN32VLF5 application, or MK20DN32VLF5 equivalent, key selection considerations include its 50 MHz Cortex-M4 performance with DSP, FlexMemory-capable variants (though this part uses flash-only configuration), 48LQFP thermal profile, USB full-speed transceiver integration, and verified operation across extended temperature and voltage (1.71–3.6 V) ranges.

Technical Context

The MK20DN32VLF5 implements an ARM Cortex-M4 core with hardware DSP instructions and single-cycle MAC, supported by a multi-purpose clock generator with 3–32 MHz crystal oscillator and 32 kHz RTC oscillator. Its memory subsystem includes 32 KB on-chip flash (not FlexNVM), 16 KB SRAM, and 2 KB FlexRAM only on FlexMemory variants - excluded here per 'N' flash-type flag.

Peripherals are managed via a 4-channel DMA controller supporting 41 request sources, eight-channel PWM timer, two quadrature decoder timers, and USB OTG with integrated transceiver. Power management includes six low-power modes (VLPR/VLPW/STOP/LLS/VLLS0–3), with VLLS0 current as low as 0.176 µA (POR disabled) at 3.0 V and –40°C to 25°C.

Key Specifications

Pinout & Package

Package: 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3 (MSL3).

Key Features

Applications

Equivalent & Alternatives

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

Compared with K20DX32VLF5, MK20DN32VLF5 trades FlexMemory capability for lower cost and identical footprint; versus KL27Z32VLH4, it delivers 1.8× higher compute throughput and integrated USB PHY - making it the only choice among the three for USB-hosted motor control or real-time signal processing at industrial temperature.

Availability

MK20DN32VLF5 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, USB human interface devices, and programmable logic controller I/O modules requiring stable component supply across extended temperature and voltage ranges.

Supply support for MK20DN32VLF5 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 MK20DN32VLF5 belongs to the Kinetis K20 family - designed specifically for cost-sensitive, high-reliability industrial and appliance applications demanding robust mixed-signal integration, USB connectivity, and extended temperature operation without external components.

FAQ

What is the maximum operating frequency of the MK20DN32VLF5?

The MK20DN32VLF5 operates at a maximum core/system clock frequency of 50 MHz. This is achieved using the internal MCG clock generator in FEI or PBE modes with appropriate crystal or external clock source. The 50 MHz rating is guaranteed across the full –40°C to +105°C ambient temperature range and 1.71–3.6 V supply voltage, as specified in the K20P48M50SF0 datasheet Rev. 4.

Does the MK20DN32VLF5 include FlexMemory (FlexNVM/FlexRAM)?

No, the MK20DN32VLF5 does not include FlexMemory. The 'N' in the part number denotes "program flash only", confirming 32 KB of main program flash with no FlexNVM or FlexRAM. FlexMemory features (64 KB flash + 4 KB FlexNVM + 2 KB FlexRAM) are present only in 'X'-suffix variants like MK20DX32VLF5, as defined in the K20 part numbering guide.

What USB capabilities does the MK20DN32VLF5 support?

The MK20DN32VLF5 integrates a full-/low-speed USB On-The-Go controller with an on-chip transceiver. It supports USB device, host, and OTG roles without requiring an external PHY. Full-speed operation (12 Mbps) is supported when the system clock is ≥20 MHz; the transceiver complies with USB 2.0 specifications and includes internal termination and bias circuitry.

What is the minimum supply voltage for reliable operation of the MK20DN32VLF5?

The MK20DN32VLF5 requires a minimum supply voltage of 1.71 V on both VDD and VDDA pins for guaranteed operation across its full temperature range (–40°C to +105°C). Below 1.71 V, brown-out reset (BOR) and power-on reset (POR) circuits may trigger, and flash access or analog peripherals may become unreliable. The absolute minimum rating is –0.3 V, but functional operation is not assured below 1.71 V.

How many low-power modes does the MK20DN32VLF5 support, and what is the lowest current draw?

The MK20DN32VLF5 supports six low-power modes: VLPR, VLPW, STOP, LLS, VLLS0, VLLS1, VLLS2, and VLLS3. The lowest current draw is in VLLS0 mode with POR detection disabled: 0.176 µA at 3.0 V and –40°C to 25°C ambient, as measured per K20P48M50SF0 Table 6. This mode retains RAM and selected registers while disabling all clocks except the 32 kHz RTC oscillator.