NXP Semiconductors MK22FX512AVLL12

Overview

MK22FX512AVLL12 from NXP Semiconductors (formerly Freescale) is a 120 MHz ARM Cortex-M4-based microcontroller with integrated FPU, 512 KB flash, 128 KB SRAM, USB LS/FS OTG 2.0 with embedded 3.3 V/120 mA LDO, and dual 16-bit SAR ADCs. It targets low-power industrial control, USB-connected sensor hubs, and battery-operated HMI systems requiring real-time processing and analog signal acquisition.

For engineers reviewing the MK22FX512AVLL12 datasheet, MK22FX512AVLL12 pinout, MK22FX512AVLL12 application, or MK22FX512AVLL12 equivalent, key selection criteria include its 100-pin LQFP package, –40°C to 105°C operating range, 268 nA VLLS0 static current, FlexMemory support (4 KB FlexRAM + 128 KB FlexNVM), and CAN 2.0B interface compatibility.

Technical Context

The MK22FX512AVLL12 implements an ARM Cortex-M4 core with hardware floating-point unit and DSP extensions, enabling efficient execution of control algorithms and signal processing tasks. Its clock system integrates PLL, FLL, and multiple internal oscillators-including 3–32 MHz and 32 kHz crystal support-enabling precise timing for USB, RTC, and motor control.

System-level features include a 16-channel DMA controller, memory protection unit (MPU) with multi-master protection, and low-leakage wakeup unit supporting six power modes (RUN, VLPR, STOP, VLPS, LLS, VLLSx). Analog subsystem comprises two independent 16-bit SAR ADCs (up to 1 MSPS), one 12-bit DAC, three analog comparators, and voltage reference.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 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 MK22FN1M0AVLL12, the MK22FX512AVLL12 offers half the flash but identical peripheral set and power profile-ideal for stable, field-deployed firmware. Against KEA128AMLH4, it provides higher compute throughput, USB capability, and analog precision at the cost of increased code size and power in active modes.

Availability

MK22FX512AVLL12 is available at Aetrix Electronics and suitable for industrial automation, USB peripheral design, and battery-powered sensing applications requiring stable component supply across extended product lifecycles.

Supply support for MK22FX512AVLL12 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 K22F family, including MK22FX512AVLL12, was designed for cost-sensitive, low-power applications demanding USB connectivity, floating-point performance, and robust analog integration in harsh environments.

FAQ

What is the maximum operating frequency of the MK22FX512AVLL12 core?

The MK22FX512AVLL12 features an ARM Cortex-M4 core with floating-point unit rated for up to 120 MHz operation. This frequency is achievable with the Phase-Locked Loop (PLL) enabled and proper voltage supply (≥2.7 V); at lower voltages (1.71–2.7 V), the maximum safe frequency is reduced per the device's voltage-frequency scaling specification. The MK22FX512AVLL12 maintains full peripheral functionality at all supported frequencies.

Does the MK22FX512AVLL12 support USB device charging detection?

Yes, the MK22FX512AVLL12 includes a dedicated USB Device Charger Detect (DCD) module compliant with USB Battery Charging Specification Rev 1.2. It autonomously identifies SDP (standard downstream port), CDP (charging downstream port), and DCP (dedicated charging port) without host CPU intervention. This capability is integrated into the USB0 peripheral block and requires no external components - a key feature distinguishing the MK22FX512AVLL12 from basic USB-only microcontrollers.

What are the low-power modes supported by the MK22FX512AVLL12?

The MK22FX512AVLL12 supports six distinct low-power modes: RUN, VLPR (Very-Low-Power Run), WAIT, STOP, VLPS (Very-Low-Power Stop), LLS (Low-Leakage Stop), and VLLSx (Very-Low-Leakage Stop variants 0–3). The deepest mode, VLLS0 with POR circuit disabled, draws just 268 nA while retaining full register and RAM content. Wakeup sources include GPIO, RTC alarm, and low-leakage wakeup unit - all configurable independently per mode. These modes are accessible via the System Mode Controller (SMC) and fully documented in the MK22FX512AVLL12 reference manual.

Can the MK22FX512AVLL12 execute code directly from FlexNVM?

No, the MK22FX512AVLL12 cannot execute code directly from FlexNVM. FlexNVM is configured as non-volatile storage only - typically used for data logging, parameter storage, or bootloader images - and lacks instruction fetch capability. Code execution is supported exclusively from the main 512 KB program flash memory. However, FlexNVM can be remapped as additional EEPROM-like storage or paired with FlexRAM for emulated EEPROM operations, both managed by the Flash Memory Module (FTFE).

What is the ADC resolution and sampling rate of the MK22FX512AVLL12?

The MK22FX512AVLL12 integrates two independent 16-bit successive approximation register (SAR) ADCs, each capable of up to 1 million samples per second (1 MSPS) at full resolution. Each ADC supports programmable conversion triggers (software, timer, or hardware sync), configurable sample time, and hardware averaging (up to 32 samples). The ADCs share a common voltage reference but operate asynchronously, enabling simultaneous sampling of different sensor channels - a capability confirmed in the MK22FX512AVLL12 data sheet Section 3.6.1.