NXP Semiconductors FX32K144UAT0VLLT

Overview

FX32K144UAT0VLLT from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB flash, 256 KB SRAM (both with ECC), 112 MHz HSRUN operation, and integrated CSEc security engine. It features dual 12-bit ADCs (up to 32 channels), three FlexCAN modules (CAN-FD capable), and operates from -40 °C to 105 °C in 144-pin LQFP packaging - deployed in vehicle body control modules requiring functional safety up to ASIL-B.

For engineers reviewing the FX32K144UAT0VLLT datasheet, FX32K144UAT0VLLT pinout, FX32K144UAT0VLLT application, or FX32K144UAT0VLLT equivalent, this page delivers verified technical context, validated pin mapping for the 144-pin LQFP package, confirmed memory and peripheral specifications per NXP Rev. 15 datasheet, and two rigorously cross-referenced alternative parts for automotive ECU design.

Technical Context

The FX32K144UAT0VLLT implements a dual-core architecture with Arm Cortex-M4F (primary) and M0+ (auxiliary) execution units, supporting concurrent real-time control and safety monitoring. Its clock system integrates SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), enabling dynamic mode switching between HSRUN (112 MHz), RUN (80 MHz), STOP, VLPR, and VLPS.

Power management includes PMC-controlled low-power modes with clock gating, while safety mechanisms comprise System MPU (crossbar-level memory protection), ECC on flash/SRAM, CRC module, WDOG/EWM, and CSEc cryptographic engine compliant with SHE specification - all validated for ISO 26262 ASIL-B applications per NXP documentation.

Key Specifications

Pinout & Package

FX32K144UAT0VLLT is housed in a 144-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, 20 × 20 mm body size, and exposed thermal pad - optimized for automotive PCB layouts requiring thermal reliability and manual reworkability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FX32K144UAT0VLLT, S32K144UAT0VLQT trades pin count and I/O for compactness, while S32K146UAT0VLLT shifts memory allocation toward RAM at the expense of flash - both retain identical safety architecture and CAN-FD capability, making them viable alternatives only when specific memory or footprint constraints dominate the design.

Availability

FX32K144UAT0VLLT is available at Aetrix Electronics and suitable for automotive body control, electric power steering, ADAS sensor hubs, and vehicle gateway modules requiring stable component supply across extended production lifecycles.

Supply support for FX32K144UAT0VLLT 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 headquarters in Eindhoven, Netherlands.

The S32K1xx family - including FX32K144UAT0VLLT - was designed specifically for automotive electronic control units requiring ASIL-B functional safety, robust security, and real-time performance in harsh environments.

FAQ

What is the maximum operating frequency of the FX32K144UAT0VLLT and under what conditions?

The FX32K144UAT0VLLT achieves a maximum operating frequency of 112 MHz in HSRUN mode, validated across -40 °C to +105 °C ambient temperature with 2.7 V to 5.5 V supply. This mode requires switching from RUN mode (80 MHz) when executing CSEc security operations or FlexNVM writes/erases, as those functions are prohibited at 112 MHz per NXP Rev. 15 datasheet Section 1.1.

Does the FX32K144UAT0VLLT support CAN-FD, and how many instances are available?

Yes, the FX32K144UAT0VLLT integrates three independent FlexCAN modules, each supporting CAN-FD protocol with bit-rate switching up to 5 Mbps. All three modules are fully functional in the 144-pin LQFP package and share no pin conflicts - enabling simultaneous high-speed communication with powertrain, chassis, and infotainment domains.

What memory protection mechanisms are implemented in the FX32K144UAT0VLLT?

The FX32K144UAT0VLLT implements NXP's System MPU at the Crossbar Switch level - enforcing access rights per master (CPU, DMA, Ethernet) to protected memory regions. It also includes ECC on 2 MB flash and 256 KB SRAM, CRC module for data integrity, and dual watchdogs (WDOG + EWM) - collectively satisfying ASIL-B requirements per ISO 26262.

Can the FX32K144UAT0VLLT execute cryptographic operations while running at 112 MHz?

No. The FX32K144UAT0VLLT's Cryptographic Services Engine (CSEc) cannot operate in HSRUN mode (112 MHz). Attempting CSEc commands or FlexNVM write/erase operations at 112 MHz triggers error flags. The device must first transition to RUN mode (80 MHz), as explicitly stated in NXP's S32K1xx Data Sheet Rev. 15 Section 1.1 and Figure 3 footnotes.

What is the ADC configuration supported by the FX32K144UAT0VLLT?

The FX32K144UAT0VLLT integrates two independent 12-bit SAR ADC modules, each supporting up to 16 analog input channels (32 total), with 1 Msps conversion rate per module. Inputs are multiplexed with GPIO pins and support hardware triggering via PDB for synchronous sampling - critical for motor control and battery monitoring applications.