NXP Semiconductors FS32K144UAT0MLHT

Overview

FS32K144UAT0MLHT from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB flash, 256 KB SRAM (both with ECC), and 112 MHz HSRUN/80 MHz RUN operation. It integrates FlexCAN with optional CAN-FD, three LPUART/LIN modules, dual 12-bit ADCs (up to 32 channels), CSEc security engine, and supports -40 °C to +125 °C ambient operation in 144-pin LQFP package - deployed in vehicle body control modules requiring ASIL-B compliance.

For engineers reviewing the FS32K144UAT0MLHT datasheet, FS32K144UAT0MLHT pinout, FS32K144UAT0MLHT application, or FS32K144UAT0MLHT equivalent, this page delivers verified specifications, validated pin mapping for the 144-LQFP variant, real-world automotive use cases, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The FS32K144UAT0MLHT implements a dual-core-capable architecture with Arm Cortex-M4F core (112 MHz HSRUN, 80 MHz RUN) and integrated DSP/FPU, paired with NXP's system-level Memory Protection Unit (MPU) enforcing crossbar-switch-level memory access control across CPU, DMA, and Ethernet masters. Its clock system includes SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), enabling deterministic low-power mode transitions between HSRUN, RUN, STOP, VLPR, and VLPS.

Power management is governed by the PMC with hardware-enforced mode restrictions: CSEc cryptographic operations and EEPROM emulation via FlexNVM require switching from HSRUN (112 MHz) to RUN (80 MHz), as concurrent execution triggers error flags. Analog subsystems include two independent 12-bit SAR ADCs (1 Msps each), one analog comparator with integrated 8-bit DAC, and configurable TRGMUX for precise peripheral synchronization.

Key Specifications

Pinout & Package

FS32K144UAT0MLHT is housed in a 144-pin LQFP (16 × 16 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignment follows NXP's S32K144-specific signal mapping per the "IO Signal Description Input Multiplexing" sheet in the Reference Manual. All GPIOs support interrupt capability, and dedicated pins provide differential clock inputs (SOSC), debug interface (SWD), reset, and power domains (VDD/VDDA/VREFH/VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K144UAT0MLHT, FS32K146UAT0VLHT offers higher CAN density and wider temperature margin at lower cost for non-safety-critical domains, while FS32K144WAT0WLHT trades HSRUN performance for guaranteed 150 °C operation and simplified power sequencing - both retain full software compatibility and pin-to-pin layout reuse.

Availability

FS32K144UAT0MLHT 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 long production lifecycles.

Supply support for FS32K144UAT0MLHT 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 deep expertise in ASIL-certified microcontrollers and automotive Ethernet.

The S32K1xx family - including FS32K144UAT0MLHT - was designed specifically for automotive electronic control units requiring functional safety (ISO 26262 ASIL-B), security (SHE/CSEc), and real-time performance in harsh environments.

FAQ

What is the maximum operating frequency of the FS32K144UAT0MLHT, and under what conditions?

The FS32K144UAT0MLHT operates at up to 112 MHz in HSRUN mode and 80 MHz in RUN mode. HSRUN mode is restricted to non-security/non-EEPROM workloads; executing CSEc cryptographic functions or FlexNVM writes requires switching to RUN mode at 80 MHz to avoid error flag assertion. This behavior is documented in the S32K1xx Data Sheet Rev. 15, Section 1.1 and Figure 3.

Does the FS32K144UAT0MLHT support CAN-FD, and how many instances are available?

Yes, the FS32K144UAT0MLHT integrates three FlexCAN modules, each configurable for CAN-FD operation per ISO 11898-1, supporting data rates up to 5 Mbps. The "F" in the ordering option "UAT0MLHT" explicitly denotes CAN-FD capability. All three modules are accessible in the 144-pin LQFP package with dedicated TX/RX pins mapped per the IO Signal Description document.

What is the purpose of the CSEc (Cryptographic Services Engine) in the FS32K144UAT0MLHT?

The CSEc in FS32K144UAT0MLHT implements SHE-compliant cryptographic functions including AES-128 encryption/decryption, SHA-256 hashing, and secure key generation/storage. It enables secure boot, firmware authentication, and OTA update integrity verification. As specified in the Data Sheet, CSEc operations must be executed in RUN mode (80 MHz), not HSRUN mode (112 MHz), to prevent conflict with flash write cycles.

How does the FS32K144UAT0MLHT handle memory protection for functional safety compliance?

The FS32K144UAT0MLHT uses NXP's system-level Memory Protection Unit (MPU), implemented at the AXBS-Lite crossbar switch, to enforce access rights for CPU, DMA, and Ethernet masters independently. Unlike Arm Core MPU, this system MPU protects all bus masters - satisfying ISO 26262 ASIL-B requirements for memory partitioning. Configuration is performed via the S32K1xx Reference Manual's System MPU chapter.

What are the supported low-power modes of the FS32K144UAT0MLHT, and which peripherals remain active in VLPS mode?

The FS32K144UAT0MLHT supports five power modes: HSRUN, RUN, STOP, VLPR, and VLPS. In VLPS (Very-Low-Power Stop), the core and most clocks halt while LPTMR, RTC, LPIT, and selected wakeup sources (e.g., LPUART RX edge) remain active. Peripherals like FlexCAN and ADC are disabled unless configured for low-power wakeup - detailed in the S32K1xx Power Modes Configuration.xlsx attachment.