NXP Semiconductors MK20DX128VLQ10

Overview

MK20DX128VLQ10 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 128 KB flash memory, 16 KB RAM, operates from 1.71–3.6 V, supports –40 to 105°C ambient temperature, and integrates dual 16-bit SAR ADCs, two CAN interfaces, USB OTG, and five UARTs. It is used in industrial motor control systems where deterministic timing, analog sensing, and fieldbus connectivity are critical.

For engineers reviewing the MK20DX128VLQ10 datasheet, MK20DX128VLQ10 pinout, MK20DX128VLQ10 application, or MK20DX128VLQ10 equivalent, key selection considerations include its 100 MHz CPU frequency, FlexBus external interface capability, integrated TSI touch sensing, 12-bit DAC, and LQFP-144 package with verified 144-pin assignment per K20 Sub-Family Data Sheet Rev. 3.

Technical Context

The MK20DX128VLQ10 implements an ARM Cortex-M4 core with hardware DSP instructions and a Memory Protection Unit (MPU), supporting deterministic real-time execution. Its clock system includes a 3–32 MHz main crystal oscillator, 32 kHz RTC oscillator, and a multi-purpose clock generator enabling flexible PLL-based frequency synthesis up to 100 MHz.

Peripheral integration includes two independent CAN 2.0B controllers, five UARTs with FIFO and LIN support, three SPI modules, two I²C interfaces, SDHC, I²S, and a programmable delay block for precise timing. Analog subsystems comprise two 16-bit SAR ADCs each with integrated PGA (up to ×64 gain), a 12-bit DAC, three analog comparators with internal 6-bit DACs, and transimpedance amplifiers - all operating within the same 1.71–3.6 V supply range as the digital core.

Key Specifications

Pinout & Package

LQFP-144 (20 mm × 20 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3 per J-STD-020. Pin assignments follow K20 Sub-Family signal multiplexing conventions with dedicated VDD/VSS pairs, configurable GPIOs, and function-specific pins for USB, CAN, ADC, and crystal oscillators.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK20DX128VLQ10, MK20DN512VLQ10 offers scalable flash/RAM without design changes, while KEA128MT64xxx trades performance and interface breadth for cost and size reduction - making it unsuitable for CAN/USB-dependent systems despite shared Kinetis ecosystem tooling.

Availability

MK20DX128VLQ10 is available at Aetrix Electronics and suitable for industrial motor control, building automation gateways, medical infusion pumps, and energy meter concentrators requiring stable component supply across extended product lifecycles.

Supply support for MK20DX128VLQ10 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 applications, with roots in Freescale's Kinetis portfolio.

The MK20DX128VLQ10 belongs to the Kinetis K20 family - engineered for cost-sensitive, high-integration embedded control applications demanding real-time performance, mixed-signal capability, and industrial-grade reliability.

FAQ

What is the maximum operating frequency of the MK20DX128VLQ10?

The MK20DX128VLQ10 operates at a maximum CPU frequency of 100 MHz, achieved via its integrated PLL and multi-purpose clock generator. This frequency is supported across the full –40 to 105°C temperature range and 1.71–3.6 V supply voltage, as validated in the K20 Sub-Family Data Sheet Rev. 3. The MK20DX128VLQ10 delivers 1.25 Dhrystone MIPS per MHz, enabling efficient execution of DSP-intensive control loops without external acceleration.

Does the MK20DX128VLQ10 support CAN FD or only classical CAN?

The MK20DX128VLQ10 supports only Classical CAN 2.0B (ISO 11898-1), not CAN FD. Its two CAN modules implement full CAN 2.0B functionality including identifier masking, message buffering, and bit-rate configuration up to 1 Mbps. CAN FD features such as flexible data-rate and extended payload length are absent; this is confirmed by the peripheral specification section of the K20 Sub-Family Data Sheet Rev. 3, which lists no CAN FD registers or timing modes for the MK20DX128VLQ10.

What package type and pin count does the MK20DX128VLQ10 use?

The MK20DX128VLQ10 uses a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch), denoted by the "LQ" suffix in its part number per Freescale's K20 naming convention. Pin assignments are fully documented in Section 8.2 ("K20 pinouts") of the K20 Sub-Family Data Sheet Rev. 3, confirming 144 signal terminals including dedicated VDD/VSS pairs, crystal inputs, USB differential pair, CAN TX/RX, and multiplexed GPIOs.

Can the MK20DX128VLQ10 operate from a single 3.3 V supply for both digital and analog domains?

Yes - the MK20DX128VLQ10 supports unified 3.3 V operation: VDD and VDDA share the same 1.71–3.6 V range, and the datasheet specifies VDD–VDDA differential voltage must remain within ±0.1 V. Using a single 3.3 V regulator with proper decoupling (e.g., 100 nF ceramic + 4.7 µF tantalum per supply rail) meets this requirement and is validated in production designs per Freescale Application Note AN4507.

Is the MK20DX128VLQ10 pin-compatible with other K20 devices in LQFP-144?

Yes - the MK20DX128VLQ10 shares identical pinout and package dimensions with other K20 family members in the LQFP-144 variant (e.g., MK20DN512VLQ10, MK20DX256VLQ10), as defined in Section 8.2 of the K20 Sub-Family Data Sheet Rev. 3. Signal multiplexing is consistent across the family, allowing hardware reuse when upgrading flash/RAM capacity or adding FlexMemory - provided firmware accounts for peripheral enablement differences.