NXP Semiconductors MK22FN512VLH12

Overview

MK22FN512VLH12 from NXP (formerly Freescale) is a 120 MHz ARM® Cortex®-M4 microcontroller with 512 KB flash, 128 KB SRAM, and 40 GPIOs in a 64-pin LQFP package. It integrates a single-precision FPU, dual 16-bit ADCs (14 SE + 2 DP per ADC), two 12-bit DACs, USB OTG LS/FS with on-chip PHY, and supports VLPR/VLPS/LLS power modes for industrial sensor nodes and motor control edge devices.

For engineers reviewing the MK22FN512VLH12 datasheet, MK22FN512VLH12 pinout, MK22FN512VLH12 application, or MK22FN512VLH12 equivalent, key selection criteria include its 120 MHz deterministic real-time performance, dual ADC/DAC capability for closed-loop analog I/O, USB device/host flexibility, and verified low-leakage stop modes down to 3.0 µA in VLLS3 - critical for battery-powered embedded systems requiring long-term autonomy and precise timing.

Technical Context

The MK22FN512VLH12 implements a Harvard-architecture Cortex-M4 core with integrated DSP extensions and single-precision FPU, enabling deterministic 1.25 DMIPS/MHz execution. Its clock system combines an FLL (locked to internal 48 MHz IRC or external crystal) and a PLL (for 120 MHz operation), with independent RTC oscillator and 1 kHz LPO for ultra-low-power wake-up.

Peripheral integration includes two DSPI modules (5/2 chip selects), two I²C interfaces, three UARTs (one with ISO7816 support), one LPUART, and a programmable delay block (PDB) tightly coupled to both ADCs for synchronized sampling. The FlexTimer (FTM) subsystem provides up to four 16-bit channels with dead-time insertion and quadrature decoding - essential for motor phase control and position sensing.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, moisture-sensitive level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK22FN512VLH12, MKE15Z64VLD4 trades performance and peripheral richness for lower cost and power, while MIMXRT1021DAG5A delivers higher compute but demands significant layout and firmware rework - making MK22FN512VLH12 the optimal balance of integration, real-time capability, and design simplicity for mid-tier industrial edge nodes.

Availability

MK22FN512VLH12 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, medical wearable sensor hubs, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for MK22FN512VLH12 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 leader in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in ARM-based microcontrollers and edge processing.

The K22F family - including MK22FN512VLH12 - was designed for deterministic real-time control in resource-constrained industrial and consumer edge devices, emphasizing low-power operation, analog integration, and USB connectivity without external components.

FAQ

What is the maximum operating frequency of the MK22FN512VLH12, and how is it achieved?

The MK22FN512VLH12 operates at a maximum frequency of 120 MHz, enabled by its Phase-Locked Loop (PLL) using an external 8 MHz crystal as reference. This frequency is sustained across the full industrial temperature range (−40°C to +105°C) with proper power supply decoupling and thermal management. The PLL output feeds both the core and bus clocks, ensuring deterministic timing for real-time tasks - a key requirement verified in the MK22FN512VLH12 datasheet's electrical characteristics table.

Does the MK22FN512VLH12 support USB host functionality, and what are the hardware requirements?

Yes, the MK22FN512VLH12 supports USB On-The-Go (OTG) in both host and device modes, with an integrated full-speed (12 Mbps) and low-speed (1.5 Mbps) transceiver. For host operation, external VBUS sensing and power switching circuitry are required, along with appropriate pull-up/pull-down resistors on D+ and D−. The MK22FN512VLH12's on-chip 3.3 V regulator can supply up to 120 mA to external USB peripherals, eliminating the need for a separate LDO.

How many analog-to-digital converter (ADC) channels does the MK22FN512VLH12 provide, and what configurations are supported?

The MK22FN512VLH12 integrates two independent 16-bit SAR ADCs: ADC0 and ADC1. In the 64-pin LQFP package, ADC0 offers 14 single-ended (SE) and 2 differential pair (DP) inputs, while ADC1 provides 12 SE and 2 DP inputs. Both support hardware averaging, programmable sample time, selectable voltage references, and conversion triggers from PDB or FTM - all confirmed in the K22F Family Product Brief Table 3 for the VLH package variant.

What low-power modes are available on the MK22FN512VLH12, and which peripherals remain active in VLLS3 mode?

The MK22FN512VLH12 supports seven low-power modes, including VLLS3 (Very Low Leakage Stop 3). In VLLS3, the core and most peripherals are powered down, but the RTC, analog comparators (CMP0/CMP1), both 12-bit DACs, low-power timer (LPTMR), and a portion of SRAM remain fully operational with 3.0 µA typical current draw. This mode retains full register and I/O state, enabling rapid wake-up (<65 µs) - a capability validated in the K22F Family Product Brief Table 5 and power consumption summary.

Is the MK22FN512VLH12 pin-compatible with other K22F variants in the same 64-pin LQFP package?

No, the MK22FN512VLH12 is not pin-compatible with lower-flash K22F variants (e.g., MK22FN256VLH12 or MK22FN128VLH10) in the same 64-pin LQFP package. While pin count and physical footprint match, functional pin assignments differ - particularly for FlexBus signals, additional ADC channels, and USB-related functions - due to silicon-level feature gating. Pin compatibility is only guaranteed within the same flash size and revision; migration requires schematic and layout review per the K22F Family Product Brief Section 3.3.