NXP Semiconductors MK22FN256VLH12

Overview

MK22FN256VLH12 from NXP Semiconductors is a 120 MHz ARM Cortex-M4-based microcontroller with FPU, 256 KB flash, 48 KB RAM, and 40 GPIOs in 64-pin LQFP package. It integrates USB LS/FS OTG 2.0 with embedded 3.3 V/120 mA LDO, dual 16-bit SAR ADCs (1.2 MS/s), 12-bit DAC, and low-power modes down to 120 nA - deployed in industrial sensor hubs and USB-connected edge nodes requiring deterministic real-time control.

For engineers reviewing the MK22FN256VLH12 datasheet, MK22FN256VLH12 pinout, MK22FN256VLH12 application, or MK22FN256VLH12 equivalent, key selection criteria include USB crystal-less FS device operation, 120 nA VLLS0 current with POR disabled, 1.71–3.6 V supply range, -40 to 105°C temperature rating, and compatibility with Kinetis SDK v3.x and MCUXpresso IDE.

Technical Context

The MK22FN256VLH12 implements a multi-oscillator clock system with two external crystals (32 kHz RTC + 3–32 MHz main), three internal oscillators (32 kHz, 4 MHz, 48 MHz), and a multipurpose clock generator featuring both PLL and FLL for precise frequency synthesis. Its power architecture supports seven low-power modes including VLLS0 (120 nA) and VLPS (4.5 µA), with 6 µs wake-up from static mode and full state retention.

Peripheral integration includes a 16-channel DMA controller, independent watchdogs, hardware CRC module, 128-bit unique chip ID, and programmable delay block. Analog subsystem comprises two 16-bit SAR ADCs with simultaneous sampling capability, one 12-bit DAC, two analog comparators with integrated 6-bit DACs, and accurate internal voltage reference - all operating across the full industrial temperature range.

Key Specifications

Pinout & Package

64-pin LQFP (10 × 10 × 1.4 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with K22FN512VLH12, MK22FN256VLH12 trades flash capacity for lower unit cost and smaller die size while retaining identical peripheral set and low-power behavior; versus KL27Z128VLH4, it delivers 2.5× higher compute throughput and integrated USB OTG at the expense of ~2× higher active current.

Availability

MK22FN256VLH12 is available at Aetrix Electronics and suitable for industrial sensor hubs, USB-capable data loggers, and smart lighting nodes requiring stable component supply across extended product lifecycles.

Supply support for MK22FN256VLH12 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The Kinetis K22F product line targets cost-sensitive, low-power embedded applications demanding USB connectivity, rich analog integration, and ARM Cortex-M4 performance - optimized for industrial control, sensor fusion, and edge-node processing.

FAQ

What is the maximum operating frequency of the MK22FN256VLH12 core?

The MK22FN256VLH12 features an ARM Cortex-M4 core with FPU rated for up to 120 MHz operation. This frequency is achievable using the PLL with a 3–32 MHz external crystal or the internal 48 MHz IRC oscillator. At 120 MHz, the device delivers 1.25 Dhrystone MIPS per MHz, enabling real-time signal processing and floating-point intensive tasks without external acceleration. The MK22FN256VLH12 maintains this speed across its full -40 to 105°C temperature range when supplied within 1.71–3.6 V.

Does the MK22FN256VLH12 support USB device operation without an external crystal?

Yes, the MK22FN256VLH12 supports USB full-speed (12 Mbps) device operation in crystal-less mode using its internal 48 MHz IRC oscillator. This capability eliminates the need for an external 48 MHz crystal and associated load capacitors, reducing BOM cost and PCB footprint. The USB LS/FS OTG 2.0 peripheral includes an on-chip transceiver and embedded 3.3 V/120 mA LDO regulator, allowing self-powered USB device functionality. Crystal-less operation is validated per USB-IF compliance requirements and documented in the MK22FN256VLH12 reference manual.

How many analog-to-digital converters does the MK22FN256VLH12 integrate, and what are their key specifications?

The MK22FN256VLH12 integrates two independent 16-bit successive approximation register (SAR) ADCs. Each ADC achieves 1.2 million samples per second (MS/s) in 12-bit mode with simultaneous sampling capability. They support programmable conversion resolution (8–16 bits), hardware averaging, and flexible trigger sources including timers and external pins. Both ADCs share the same analog supply domain (VDDA) and operate across the full industrial temperature range (-40 to 105°C) with guaranteed linearity and offset error specs published in the MK22FN256VLH12 datasheet.

What is the lowest power consumption mode available on the MK22FN256VLH12, and what is its typical current draw?

The MK22FN256VLH12 supports Very Low-Leakage Stop Mode 0 (VLLS0) as its deepest power-saving state, achieving as low as 120 nA typical current draw at 3.0 V when the POR detect circuit is disabled. In this mode, the device retains full RAM and register contents while disabling all clocks except the 32 kHz RTC oscillator. Wake-up occurs in under 6 µs via GPIO, RTC alarm, or other configured interrupts. This ultra-low quiescent current enables multi-year battery operation in always-on sensor applications - a key differentiator confirmed in the MK22FN256VLH12 electrical characteristics table.

Is the MK22FN256VLH12 pin-compatible with other members of the K22F family?

The MK22FN256VLH12 uses a 64-pin LQFP package (10 × 10 mm, 0.5 mm pitch) and shares identical pinout with MK22FN256VMP12 (64-pin MAPBGA) only for functional signal mapping - however, physical pin compatibility exists exclusively within the same package variant. Among LQFP variants, MK22FN256VLH12 is pin-compatible with MK22FN512VLH12 (same 64-pin LQFP, 512 KB flash). It is not pin-compatible with MK22FN256VLL12 (100-pin LQFP) or MK22FN256VDC12 (121-pin XFBGA). Always verify mechanical and thermal constraints before substitution.