NXP Semiconductors FS32K144HRT0CLHT

Overview

FS32K144HRT0CLHT 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/80 MHz RUN operation, and integrated CSEc security engine. It supports CAN-FD, LPUART/LIN, LPSPI, LPI2C, FlexIO, and dual 12-bit ADCs - deployed in body control modules, gateway ECUs, and battery management systems.

For engineers reviewing the FS32K144HRT0CLHT datasheet, FS32K144HRT0CLHT pinout, FS32K144HRT0CLHT application, or FS32K144HRT0CLHT equivalent, key selection considerations include ASIL-B capable safety architecture, 144-pin LQFP package with 156 GPIOs, HSRUN/RUN mode voltage-temperature constraints, and mandatory mode switching for CSEc/EEPROM operations.

Technical Context

The FS32K144HRT0CLHT implements a dual-core Arm Cortex-M4F/M0+ architecture where the M4F core executes real-time control tasks at up to 112 MHz in HSRUN mode (2.7–5.5 V, −40 °C to +105 °C), while the M0+ core handles low-power background functions. Its AXBS-Lite crossbar switch enables concurrent access to flash, SRAM, and peripherals by CPU, DMA, and Ethernet.

Power management includes five operational modes (HSRUN, RUN, STOP, VLPR, VLPS) with PMC-controlled clock gating; CSEc cryptographic operations and EEPROM emulation are restricted to RUN mode (80 MHz) due to hardware arbitration conflict with HSRUN execution. Memory protection uses NXP's system MPU - not Arm's core MPU - enforcing region-based access rights across all masters (CPU, DMA, ENET).

Key Specifications

Pinout & Package

FS32K144HRT0CLHT is housed in a 144-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow NXP's standardized S32K14x I/O multiplexing scheme, supporting configurable peripheral mapping per pin.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S32K142HRT0MLHT, FS32K144HRT0CLHT delivers double flash/SRAM capacity and FlexNVM for robust EEPROM emulation - essential for complex gateway or BMS firmware. Against S32K144HRT0MLHT, it trades thermal rating for lower cost in cabin-located applications where 105 °C ambient suffices.

Availability

FS32K144HRT0CLHT is available at Aetrix Electronics and suitable for automotive body control modules, gateway ECUs, battery management systems, electric power steering units, and advanced driver assistance systems requiring stable component supply across long production lifecycles.

Supply support for FS32K144HRT0CLHT 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 leader in automotive semiconductors, delivering secure, energy-efficient, and safety-certified MCUs for next-generation vehicle architectures.

The S32K1xx family - including FS32K144HRT0CLHT - was designed specifically for ASIL-B automotive applications such as body electronics, domain controllers, and battery management, with integrated safety mechanisms and hardware security.

FAQ

What is the maximum operating frequency of the FS32K144HRT0CLHT and under what conditions?

The FS32K144HRT0CLHT 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 ≤ +105 °C; RUN mode supports the full −40 °C to +125 °C range. The 112 MHz frequency is validated only for V-grade parts like FS32K144HRT0CLHT under specified voltage and thermal conditions per the S32K1xx Data Sheet Rev. 15.

Does the FS32K144HRT0CLHT support CAN-FD, and how many instances are available?

Yes, the FS32K144HRT0CLHT integrates three FlexCAN modules, all supporting CAN-FD (ISO 11898-1) with bit rates up to 5 Mbps. Each module includes dedicated message RAM, error counters, and flexible filtering - enabling concurrent high-speed communication on powertrain, chassis, and body networks without external CAN controllers.

Can the FS32K144HRT0CLHT execute CSEc cryptographic operations in HSRUN mode?

No. The FS32K144HRT0CLHT triggers error flags if CSEc (Security) or EEPROM write/erase commands are executed in HSRUN mode (112 MHz). Per the S32K1xx Data Sheet, the device must switch to RUN mode (80 MHz) to perform these operations - a hardware-enforced constraint to prevent resource contention between high-speed execution and secure memory access.

What package type and pin count does the FS32K144HRT0CLHT use?

The FS32K144HRT0CLHT uses a 144-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. This package supports all 156 GPIOs via multiplexing and is pin-compatible with other S32K14x devices in the same footprint - enabling scalable design reuse across performance tiers.

How does the FS32K144HRT0CLHT implement functional safety for ASIL-B compliance?

The FS32K144HRT0CLHT achieves ASIL-B capability through integrated safety mechanisms: ECC on flash and SRAM, System MPU enforcing memory access rights across all masters (CPU/DMA/ENET), CRC module for data integrity, dual watchdogs (WDOG/EWM), and lockstep-ready peripherals. These features are documented in the S32K1xx Functional Safety Manual and validated per ISO 26262 requirements.