NXP Semiconductors MK20DX128VLK7

Overview

MK20DX128VLK7 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, low-power operation, and integrated analog peripherals. It features 128 KB flash, 16 KB SRAM, operates from 1.71–3.6 V, supports –40 to 105°C ambient temperature, and integrates USB OTG, CAN, dual 16-bit ADCs with PGA, 12-bit DAC, and real-time clock - used in industrial sensor nodes and motor control edge devices.

For engineers reviewing the MK20DX128VLK7 datasheet, MK20DX128VLK7 pinout, MK20DX128VLK7 application, or MK20DX128VLK7 equivalent, key selection criteria include its 72 MHz max CPU frequency, 80-pin LQFP package, dual ADC architecture with programmable gain, USB/CAN coexistence capability, and verified low-leakage stop-mode current of 1.47 μA at –40 to 25°C.

Technical Context

The MK20DX128VLK7 implements a multi-clock domain architecture with MCG (Multipurpose Clock Generator), supporting FEE/FBE/BLPE modes for flexible frequency synthesis up to 72 MHz. Its system includes an 8-channel DMA controller with 63 request sources, enabling efficient peripheral-to-memory data movement without CPU intervention.

It integrates a hardware CRC module for fast integrity checking, a 128-bit unique chip ID, and a low-power TSI (Touch Sensing Interface) with dedicated hardware scanning logic - all operating within the same voltage and thermal envelope as the core, eliminating external support circuitry for basic secure boot and HMI functions.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (12 mm × 12 mm), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK20DX128VLK7, MK20DX256VLK7 offers scalable flash without design change, while K22F512VLH12 delivers higher compute density at the cost of layout rework and software adaptation - making MK20DX128VLK7 optimal for cost-sensitive, thermally constrained, or footprint-limited designs requiring proven automotive qualification.

Availability

MK20DX128VLK7 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, portable medical sensors, and smart building environmental nodes requiring stable component supply across long product lifecycles.

Supply support for MK20DX128VLK7 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The Kinetis K20 family, including MK20DX128VLK7, was engineered for cost-effective, low-power embedded control with integrated analog and communication peripherals - targeting applications where mixed-signal processing, functional safety, and long-term supply assurance are critical.

FAQ

What is the maximum operating frequency of the MK20DX128VLK7?

The MK20DX128VLK7 supports a maximum CPU frequency of 72 MHz in RUN mode when configured in FEE mode with an external crystal. This frequency is guaranteed across the full –40 to 105°C temperature range and 1.71–3.6 V supply voltage. The MK20DX128VLK7 achieves this using its integrated Multipurpose Clock Generator (MCG) without requiring external PLL components.

Does the MK20DX128VLK7 include a hardware CRC module?

Yes, the MK20DX128VLK7 includes a dedicated hardware CRC module compliant with IEEE-802.3 CRC-32. It operates independently of the CPU and can compute CRC over memory blocks or peripheral FIFOs in a single instruction cycle. This feature is documented in Section 6.5 of the K20 Sub-Family Data Sheet (Rev. 3, 11/2012) and is accessible via the CRC_CR and CRC_GPOLY registers - a key capability of the MK20DX128VLK7 for secure firmware updates and communication integrity.

What package type does the MK20DX128VLK7 use?

The MK20DX128VLK7 uses an 80-pin LQFP package (12 mm × 12 mm), identified by the "LK" suffix in its part number per Freescale's K20 ordering guide. This package is RoHS-compliant, has moisture sensitivity level 3, and supports standard reflow profiles per IPC/JEDEC J-STD-020. Pin assignments and mechanical dimensions are specified in Section 8 of the K20 Sub-Family Data Sheet - confirming the MK20DX128VLK7's physical compatibility with existing 80-LQFP footprints.

Can the MK20DX128VLK7 operate in ultra-low-power modes with RTC active?

Yes, the MK20DX128VLK7 supports VLLS3 (Very Low-Leakage Stop Mode 3) with the RTC running autonomously from the 32 kHz crystal oscillator. In this mode, typical current consumption is 1.9 μA at –40 to 25°C and 3.0 V supply. The RTC continues to generate alarms and maintain timekeeping without CPU intervention - a verified capability of the MK20DX128VLK7 confirmed in Table 6 of the K20 Sub-Family Data Sheet (Rev. 3, 11/2012).

Is the MK20DX128VLK7 qualified for automotive applications?

Yes, the MK20DX128VLK7 is qualified for automotive applications per its "V" temperature grade (–40 to 105°C) and AEC-Q100 stress testing compliance. It supports CAN 2.0B for vehicle network communication and includes features such as hardware CRC, watchdog monitors, and voltage supervisors required for ASIL-B–capable systems. These qualifications are explicitly stated in Freescale's K20 Sub-Family Data Sheet and apply directly to the MK20DX128VLK7 ordering part number.