NXP Semiconductors FX32K144UAT0VLHT

Overview

FX32K144UAT0VLHT 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 (32-channel total), three FlexCAN modules (CAN-FD capable), and operates across -40 °C to +105 °C for body control module and powertrain sensor interface applications.

For engineers reviewing the FX32K144UAT0VLHT datasheet, FX32K144UAT0VLHT pinout, FX32K144UAT0VLHT application, or FX32K144UAT0VLHT equivalent, this page delivers verified technical context, package-specific pin mapping, safety-critical timing parameters, real-world automotive use cases, and validated alternative parts - all grounded in NXP's S32K1xx Rev. 15 datasheet and orderable part number list.

Technical Context

The FX32K144UAT0VLHT implements a dual-core architecture with Arm Cortex-M4F (primary) and Cortex-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), with dynamic mode switching between HSRUN (112 MHz), RUN (80 MHz), and low-power STOP/VLPS modes.

Memory subsystem includes 2 MB program flash with ECC, 64 KB FlexNVM for EEPROM emulation, 256 KB SRAM with ECC, and 4 KB FlexRAM configurable as SRAM or EEPROM. Peripheral set includes three LPUART/LIN, three LPSPI, two LPI2C, eight FlexTimers (64 PWM/IC/OC channels), LPIT, PDB, RTC, and QuadSPI with HyperBus™ support - all accessible via AXBS-Lite crossbar switch with DMA routing through DMAMUX.

Key Specifications

Pinout & Package

FX32K144UAT0VLHT is housed in a 144-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant and moisture-sensitive level 3 (MSL3). Pin assignments follow NXP's S32K144 standard pinout for 144-pin LQFP, supporting full peripheral access including all three FlexCAN channels, dual ADC inputs, and 156 GPIOs (with multiplexed functions).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S32K142UAT0VLHT, FX32K144UAT0VLHT provides double flash capacity and full peripheral complement - critical for complex motor control or OTA-capable BMS firmware. Neither part is pin-compatible with S32K11x series due to differing core architecture and peripheral register maps.

Availability

FX32K144UAT0VLHT is available at Aetrix Electronics and suitable for automotive body control, powertrain sensor interface, and battery management applications requiring stable component supply, long-term lifecycle assurance, and ASIL-B-compliant sourcing.

Supply support for FX32K144UAT0VLHT 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 30 years of automotive MCU heritage and ISO/TS 16949-certified manufacturing.

The S32K1xx family - including FX32K144UAT0VLHT - was designed specifically for ASIL-B automotive control applications such as engine management, electric power steering, and battery monitoring, integrating functional safety, security, and real-time performance in a single die.

FAQ

What is the maximum operating frequency of FX32K144UAT0VLHT and under what conditions?

FX32K144UAT0VLHT operates at up to 112 MHz in HSRUN mode, guaranteed across -40 °C to +105 °C ambient temperature with 2.7–5.5 V supply. This frequency requires SPLL configuration and is not permitted during CSEc security operations or EEPROM writes - those functions require switching to 80 MHz RUN mode per NXP's S32K1xx datasheet Rev. 15 section 1.1.

Does FX32K144UAT0VLHT support CAN-FD, and how many instances are available?

Yes, FX32K144UAT0VLHT integrates three FlexCAN modules, all supporting CAN-FD (ISO 11898-1) with bit-rate switching and payload lengths up to 64 bytes. Each module is independently configurable for nominal/data phase timing, enabling dual-bus redundancy or multi-domain networking in automotive architectures.

What memory protection mechanisms are implemented in FX32K144UAT0VLHT?

FX32K144UAT0VLHT implements NXP's system-level Memory Protection Unit (MPU) at the AXBS-Lite crossbar switch, enforcing access rights for CPU, DMA, and Ethernet masters across protected memory regions. It also includes ECC on 2 MB flash and 256 KB SRAM, CRC module, and internal/external watchdogs - collectively supporting ASIL-B compliance per ISO 26262.

Can FX32K144UAT0VLHT execute cryptographic operations while running at 112 MHz?

No. The Cryptographic Services Engine (CSEc) and EEPROM write/erase operations are explicitly prohibited in HSRUN mode (112 MHz) per NXP's S32K1xx datasheet Rev. 15 section 1.1. FX32K144UAT0VLHT must transition to RUN mode (80 MHz) to execute CSEc functions or Flash/FlexNVM programming - failure to do so triggers error flags and halts secure operations.

What is the ADC resolution and sampling rate supported by FX32K144UAT0VLHT?

FX32K144UAT0VLHT includes two independent 12-bit SAR ADC modules, each supporting up to 32 analog input channels and 1 Msps conversion rate. Hardware triggering via FlexTimer, PDB, or LPIT enables synchronized sampling across both modules - essential for multi-sensor engine control and motor phase current measurement.