NXP Semiconductors MKS22FN256VLH12

Overview

MKS22FN256VLH12 from NXP Semiconductors is a 120 MHz ARM® Cortex®-M4 microcontroller with FPU, 256 KB flash, 64 KB SRAM, and dual FlexCAN interfaces - designed for real-time industrial control, automotive body electronics, and CAN-based gateway applications requiring deterministic timing and low-power operation.

For engineers reviewing the MKS22FN256VLH12 datasheet, MKS22FN256VLH12 pinout, MKS22FN256VLH12 application, or MKS22FN256VLH12 equivalent, key selection criteria include its 64-pin LQFP package, –40 to 105 °C extended temperature range, crystal-less USB FS OTG support, dual CAN 2.0B compliance per ISO 11898-1, and integrated 16-bit ADC with 1.2 Msps sampling in ≤13-bit mode.

Technical Context

The MKS22FN256VLH12 implements a dual-FlexCAN architecture with independent message buffers and FIFOs, supporting concurrent CAN FD-ready messaging on two physical buses. Its clock system integrates MCG with PLL/FLL, enabling dynamic switching between 120 MHz high-performance run mode and sub-1 µA VLPS/LLS stop modes using programmable wake-up sources including CAN RX edges, RTC alarms, and LPI2C activity.

Peripherals are partitioned across three clock domains: system bus (max 120 MHz), bus clock (max 60 MHz), and flash clock (derived from MCGOUTCLK). The crossbar switch enables simultaneous access by up to four bus masters-including Cortex-M4 core, eDMA, USB, and debug interface-to memory and peripheral slaves without arbitration stalls.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 × 10 × 1.6 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 MKS22FN256VLH12, MKE15Z256VLH8 offers lower power and cost but sacrifices CAN redundancy and FPU-enabled control loops; MPC5604BFTLQ provides ASIL-B heritage and larger flash but lacks USB integration and advanced low-power states critical for next-gen diagnostic tools.

Availability

MKS22FN256VLH12 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and diagnostic interface applications requiring stable component supply, extended temperature operation, and long-term lifecycle support.

Supply support for MKS22FN256VLH12 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, with over 40 years of microcontroller innovation.

The KS22 product line targets high-integrity real-time applications demanding dual CAN, USB OTG, and extended temperature resilience - specifically engineered for automotive gateway, industrial automation, and smart mobility systems.

FAQ

What is the maximum operating frequency of the MKS22FN256VLH12?

The MKS22FN256VLH12 operates at a maximum core frequency of 120 MHz using its ARM Cortex-M4 processor with integrated PLL. This frequency is sustained across the full –40 to 105 °C temperature range and 1.71–3.6 V supply voltage, validated per NXP's electrical characteristics testing in Rev. 3.1 datasheet. The MKS22FN256VLH12 achieves 1.25 Dhrystone MIPS per MHz, delivering 150 DMIPS total performance.

Does the MKS22FN256VLH12 support crystal-less USB operation?

Yes, the MKS22FN256VLH12 integrates a crystal-less USB FS/LS OTG 2.0 controller with on-chip transceiver and internal clock recovery circuitry. This eliminates the need for an external 48 MHz crystal and associated load capacitors, reducing BOM count and PCB footprint. The feature is fully documented in Section 2.2.16 of the KS22/KS20 datasheet (Rev. 3.1) and applies specifically to the MKS22FN256VLH12 in its 64-pin LQFP package.

How many CAN interfaces does the MKS22FN256VLH12 provide?

The MKS22FN256VLH12 provides two independent FlexCAN modules compliant with ISO 11898-1 and CAN 2.0B specifications. This dual-CAN capability is explicitly confirmed in Table 1 (Ordering Information) and Figure 1 (Functional Block Diagram) of the KS22/KS20 datasheet, distinguishing it from the KS20 variant which offers only one CAN interface. Each CAN controller features dedicated message buffers, hardware filtering, and bus-off recovery logic.

What is the ADC resolution and sampling rate supported by the MKS22FN256VLH12?

The MKS22FN256VLH12 integrates a 16-bit SAR ADC with up to 17 single-ended and 4 differential input channels. It achieves 1.2 Msps sampling rate in ≤13-bit mode, as specified in Section 2.2.3 of the datasheet. In the 64-pin LQFP package (VLH), 14 single-ended and 2 differential channels are available. The ADC supports hardware-triggered conversions, programmable gain, and oversampling for enhanced effective resolution - all confirmed for the MKS22FN256VLH12 in the "Signal Multiplexing and Pin Assignments" section.

Is the MKS22FN256VLH12 qualified for automotive applications?

Yes, the MKS22FN256VLH12 is qualified for automotive applications per its –40 to 105 °C operating temperature range, AEC-Q100 stress test compliance (implied by NXP's automotive-grade qualification process), and dual CAN 2.0B support aligned with ISO 11898-1. It is explicitly targeted at automotive body electronics and gateway systems in NXP's KS22 product brief. The MKS22FN256VLH12 also includes hardware security features - such as flash access control (FAC), 128-bit UID, and RNG - required for secure vehicle communication modules.