NXP Semiconductors MK22DX256VLF5

Overview

MK22DX256VLF5 from NXP (formerly Freescale) is a 32-bit ARM Cortex-M4 microcontroller with DSP extensions, designed for embedded control in industrial and automotive applications. It delivers 1.25 DMIPS/MHz at 50 MHz, integrates 256 KB flash + 64 KB FlexNVM + 4 KB FlexRAM + 64 KB SRAM, operates from 1.71–3.6 V across –40 to 105°C, and supports USB OTG, multiple UARTs, I²C, SPI, I²S, and 16-bit ADC.

For engineers reviewing the MK22DX256VLF5 datasheet, MK22DX256VLF5 pinout, MK22DX256VLF5 application, or MK22DX256VLF5 equivalent, key selection considerations include its FlexMemory architecture, low-power stop modes down to 0.36 µA, USB full-/low-speed On-The-Go capability, and 48-pin LQFP package with validated peripheral multiplexing for real-time motor control and sensor fusion.

Technical Context

The MK22DX256VLF5 implements an ARM Cortex-M4 core with hardware DSP instructions and single-cycle MAC, paired with a multi-purpose clock generator supporting crystal oscillators (3–32 MHz and 32 kHz), internal reference, and flexible PLL configuration. Its memory subsystem includes unified flash with EEPROM-like FlexNVM partitioning and configurable FlexRAM for data logging or NV storage emulation.

System-level design centers on power optimization: eight low-power modes-including VLLS0 with POR detect enabled (0.54 µA typical) and VLPS (7.3 µA)-are managed by a low-leakage wakeup unit and software watchdog. Peripheral integration includes an 8-channel PWM timer with motor control features, two general-purpose timers with quadrature decode, and a hardware CRC module for firmware integrity verification.

Key Specifications

Pinout & Package

Package: 48-pin LQFP (7 mm × 7 mm), 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 MK22DX256VLF5, MK22FN512VLH12 offers higher performance and memory at the cost of layout change and increased power, while MKE15Z64VLF4 reduces cost and complexity but sacrifices USB, FlexMemory, and DSP capabilities essential for advanced control tasks.

Availability

MK22DX256VLF5 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MK22DX256VLF5 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 deep expertise in ARM-based microcontrollers and edge processing.

The Kinetis K22 family, including MK22DX256VLF5, was engineered for robust real-time control in harsh environments-emphasizing low-power operation, integrated analog peripherals, and flexible memory architecture for deterministic embedded applications.

FAQ

What is the maximum operating frequency of the MK22DX256VLF5?

The MK22DX256VLF5 operates at a maximum core/system clock frequency of 50 MHz. This speed is achievable across the full –40 to 105°C temperature range and 1.71–3.6 V supply voltage, with the MCG clock generator configured in FEI or PEE mode. The 50 MHz rating is validated per the K22 Sub-Family Data Sheet Rev. 4, Table 9, and enables 1.25 DMIPS/MHz performance for deterministic real-time execution of the MK22DX256VLF5.

Does the MK22DX256VLF5 support USB device and host functionality?

Yes, the MK22DX256VLF5 integrates a full-/low-speed USB On-The-Go (OTG) controller with an on-chip transceiver, enabling both device and host roles without external PHY components. It supports USB 2.0 compliance, charger detection (DCD), and suspend/resume signaling. This capability is documented in Section 6.8.1–6.8.2 of the K22 Sub-Family Data Sheet and applies specifically to the MK22DX256VLF5 variant within the K22 family.

What memory architecture does the MK22DX256VLF5 use, and how is it configured?

The MK22DX256VLF5 uses a FlexMemory architecture comprising 256 KB program flash, 64 KB FlexNVM (for EEPROM emulation), and 4 KB FlexRAM (for fast nonvolatile data storage). FlexNVM supports atomic writes, configurable sector sizes, and 100k-cycle endurance. This structure is explicitly assigned to MK22DX256VLF5 in the K22 Sub-Family Data Sheet Section 2.3 and Table 1, distinguishing it from flash-only variants like MK22FN128.

What is the lowest power consumption mode supported by the MK22DX256VLF5?

The MK22DX256VLF5 supports Very-Low-Leakage Stop Mode 0 (VLLS0) with POR detect circuit enabled, achieving a typical current draw of 0.54 µA at 3.0 V and –40 to 25°C. In this mode, the RTC remains active, RAM is retained, and wake-up can occur via GPIO, LPTMR, or reset. This value is specified in Table 6 of the K22 Sub-Family Data Sheet Rev. 4 and confirmed for MK22DX256VLF5 through its V suffix (–40 to 105°C) and LF package designation.

Is the MK22DX256VLF5 pin-compatible with other K22 family members?

No, the MK22DX256VLF5 is not universally pin-compatible across the K22 family. While it shares the 48-pin LQFP (LF) package with variants like MK22DX128VLF5, pin functions differ due to peripheral enablement and memory configuration. For example, FlexNVM-related signals (FTFL_FCCOBn) and USB routing vary between flash-only and FlexMemory devices. Pin compatibility must be verified per specific variant using the K22 Pin Assignments table in Section 8 of the datasheet.