NXP Semiconductors MK22DX128VLK5

Overview

MK22DX128VLK5 from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M4 microcontroller with DSP extensions, operating at up to 50 MHz, featuring 128 KB program flash, 64 KB RAM, and FlexMemory (4 KB FlexRAM + 64 KB FlexNVM). It integrates USB OTG, dual SPI/I²C, four UARTs, 16-bit SAR ADC, 12-bit DAC, real-time clock, and low-power timers - deployed in industrial sensor nodes requiring deterministic real-time control and secure firmware updates.

For engineers reviewing the MK22DX128VLK5 datasheet, MK22DX128VLK5 pinout, MK22DX128VLK5 application, or MK22DX128VLK5 equivalent, key selection criteria include its -40°C to 105°C extended temperature rating, 1.71–3.6 V supply range, FlexMemory architecture for data logging resilience, USB Device Charger Detect (DCD), and verified low-leakage stop modes down to 0.36 µA (VLLS0, POR disabled).

Technical Context

The MK22DX128VLK5 implements an ARM Cortex-M4 core with hardware DSP instructions and single-cycle MAC, delivering 1.25 Dhrystone MIPS/MHz. Its memory subsystem includes unified flash with EEPROM-like FlexNVM for wear-leveling data storage and FlexRAM for fast nonvolatile scratchpad access - both configurable via runtime commands without external components.

Clock management uses a multi-source MCG (Multipurpose Clock Generator) supporting internal RC, crystal (3–32 MHz), and 32 kHz RTC oscillator inputs, enabling dynamic mode transitions between RUN, VLPR, VLPS, LLS, and VLLS0–3 states. Power optimization is enforced through 16-channel DMA offloading CPU tasks and a low-leakage wakeup unit with programmable pin-triggered resume from sub-µA sleep.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch), 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 MK22DX128VLK5, MK22FN512VLH12 offers higher compute throughput and memory but removes FlexMemory - eliminating seamless data logging resilience. K22F512VLH12 matches functionality but adds AEC-Q100 compliance at the cost of broader industrial temperature margin verification.

Availability

MK22DX128VLK5 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MK22DX128VLK5 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 MCU portfolio.

The MK22DX128VLK5 belongs to the Kinetis K22 family - designed specifically for cost-sensitive, low-power industrial control applications demanding integrated analog peripherals, USB connectivity, and robust data retention without external EEPROM or FRAM.

FAQ

What is the maximum operating frequency of the MK22DX128VLK5?

The MK22DX128VLK5 operates at a maximum system and core clock frequency of 50 MHz. This is achieved using the Multipurpose Clock Generator (MCG) in FEI or PBE modes with appropriate crystal or internal reference configuration. The 50 MHz limit applies across the full -40°C to +105°C temperature range and 1.71–3.6 V supply voltage, as validated in the K22P80M50SF4 datasheet Section 5.3.1.

Does the MK22DX128VLK5 support USB device charging detection?

Yes, the MK22DX128VLK5 includes a dedicated USB Device Charger Detect (DCD) module compliant with USB Battery Charging Specification v1.2. It autonomously identifies SDP (standard downstream port), CDP (charging downstream port), and DCP (dedicated charging port) sources on the USB0_DP line - enabling intelligent power management in portable MK22DX128VLK5-based devices without external detection ICs.

How much FlexMemory does the MK22DX128VLK5 provide?

The MK22DX128VLK5 provides 64 KB of FlexNVM and 4 KB of FlexRAM. FlexNVM functions as emulated EEPROM with >100,000 write cycles and byte-level erase; FlexRAM serves as nonvolatile SRAM that retains data during all low-power modes including VLLS0. Both are accessed via standard memory-mapped addresses and controlled by the FTFL command interface.

What is the lowest achievable current consumption in stop mode for the MK22DX128VLK5?

In Very-Low-Leakage Stop Mode 0 (VLLS0) with POR circuit disabled, the MK22DX128VLK5 achieves a typical current draw of 0.359 µA at -40°C to +25°C and 3.0 V supply (max 1.1 µA at 105°C). This mode retains RTC operation, 128-bit UID, and selected RAM while allowing wake-up via GPIO, RTC alarm, or LLWU inputs - critical for battery-backed MK22DX128VLK5 deployments.

Is the MK22DX128VLK5 pin-compatible with other K22 family members?

No, the MK22DX128VLK5 is not pin-compatible with other K22 variants due to its specific 80-pin LQFP (LK) package. While it shares the same K22 signal multiplexing architecture, pin assignments differ from 48-pin (FT/LF), 64-pin (LH), or 100-pin (LL) packages. Migration requires PCB layout revision; however, software is highly portable across the K22 family via the Kinetis SDK and CMSIS abstraction layer.