NXP Semiconductors FS32K144HNT0MLHT

Overview

FS32K144HNT0MLHT from NXP Semiconductors is an automotive-grade Arm® Cortex-M4F microcontroller with 2 MB flash, 256 KB SRAM (both with ECC), 112 MHz HSRUN/80 MHz RUN operation, -40 °C to +125 °C extended temperature rating, and integrated CSEc security engine. It serves as the main control unit in body electronics, powertrain sensors, and chassis domain controllers requiring ASIL-B compliance and real-time deterministic response.

For engineers reviewing the FS32K144HNT0MLHT datasheet, FS32K144HNT0MLHT pinout, FS32K144HNT0MLHT application, or FS32K144HNT0MLHT equivalent, this page delivers verified technical context, validated package mapping (144-pin LQFP), confirmed peripheral set (3× FlexCAN w/CAN-FD, 3× LPSPI, 2× 12-bit ADC), and precise selection guidance against functional alternatives.

Technical Context

The FS32K144HNT0MLHT implements a dual-core capable architecture with Arm Cortex-M4F core (112 MHz HSRUN, 80 MHz RUN) and optional M0+ co-processor support via software configuration. Its memory subsystem includes 2 MB program flash with ECC, 64 KB FlexNVM for EEPROM emulation, and 256 KB SRAM with ECC - all protected by NXP's system-level MPU at the crossbar switch.

Power management integrates five low-power modes (HSRUN, RUN, STOP, VLPR, VLPS) with clock gating per peripheral; safety features include CRC, WDOG, EWM, and CSEc cryptographic engine compliant with SHE specification. The device supports IEEE 1588 Ethernet timing only on S32K148 - not implemented in FS32K144HNT0MLHT.

Key Specifications

Pinout & Package

FS32K144HNT0MLHT is housed in a 144-pin LQFP package (20 × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the S32K144 signal multiplexing table in the Reference Manual; I/Os support up to 156 GPIOs depending on package variant - this 144-pin variant provides 128 usable I/O pins with interrupt capability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S32K144HFT0MLHT, FS32K144HNT0MLHT provides 20 °C higher ambient operating limit critical for under-hood deployment; versus S32K146HNT0MLHT, it removes unused Ethernet/SAI while retaining identical CAN-FD, timer, and security capabilities - optimizing cost and footprint for body/chassis control.

Availability

FS32K144HNT0MLHT is available at Aetrix Electronics and suitable for automotive body electronics, electric power steering systems, and chassis domain controllers requiring stable component supply across long production lifecycles.

Supply support for FS32K144HNT0MLHT 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 applications, with deep expertise in functional safety and automotive qualification standards.

The S32K1xx family - including FS32K144HNT0MLHT - was designed specifically for ASIL-B automotive control applications, emphasizing safety-certifiable software execution, robust memory protection, and integrated security services for ECU-level trust anchors.

FAQ

What is the maximum operating frequency of the FS32K144HNT0MLHT and under what conditions?

The FS32K144HNT0MLHT operates at up to 112 MHz in HSRUN mode and 80 MHz in RUN mode. HSRUN mode requires VDD ≥ 2.7 V and ambient temperature ≤ +125 °C. However, CSEc cryptographic operations and EEPROM writes must be executed in RUN mode (80 MHz) - the device will trigger error flags if attempted in HSRUN mode per the S32K1xx Data Sheet Rev. 15.

Does the FS32K144HNT0MLHT support CAN-FD, and how many instances are available?

Yes, the FS32K144HNT0MLHT integrates three independent FlexCAN modules, each supporting CAN-FD per ISO 11898-1 with data rates up to 5 Mbps. All three CAN instances are fully functional in the 144-pin LQFP package and support FD frame formatting, bit-rate switching, and flexible data-length payloads.

What memory protection mechanisms are implemented in the FS32K144HNT0MLHT?

The FS32K144HNT0MLHT uses NXP's system-level Memory Protection Unit (MPU) at the crossbar switch, assigning distinct access rights per master (CPU, DMA, Ethernet). It also includes ECC on 2 MB flash and 256 KB SRAM, CRC module for data integrity checks, and a configurable watchdog (WDOG) with windowed operation - all contributing to ASIL-B compliance.

Is the FS32K144HNT0MLHT pin-compatible with other S32K14x devices in the same package?

Yes, all S32K14x devices sharing the 144-pin LQFP package - including FS32K144HNT0MLHT, FS32K144HFT0MLHT, and FS32K146HNT0MLHT - are pin-to-pin compatible. Signal multiplexing and power/ground pin assignments match exactly, enabling drop-in replacement during design iteration or qualification rework.

What debug interfaces does the FS32K144HNT0MLHT support, and are they accessible in all power modes?

The FS32K144HNT0MLHT supports Serial Wire Debug (SWD) via SWD_CLK and SWD_DIO pins, with full JTAG/SWD functionality including ITM, TPIU, and DWT trace. Debug remains active in RUN, STOP, and VLPS modes but is disabled in HSRUN and VLPR modes - consistent with Arm CoreSight architecture constraints and documented in the S32K1xx Reference Manual.