NXP Semiconductors FS32K144HRT0CLLT

Overview

FS32K144HRT0CLLT from NXP Semiconductors is an automotive-grade Arm® Cortex-M4F microcontroller designed for real-time control in safety-critical ECUs. It operates at up to 112 MHz (HSRUN mode), features 2 MB program flash with ECC, 256 KB SRAM with ECC, and supports -40 °C to 105 °C ambient operation in 144-pin LQFP packaging. It integrates FlexCAN with optional CAN-FD, CSEc security engine, and dual 12-bit ADCs for body control module applications.

For engineers reviewing the FS32K144HRT0CLLT datasheet, FS32K144HRT0CLLT pinout, FS32K144HRT0CLLT application, or FS32K144HRT0CLLT equivalent, key selection considerations include HSRUN/RUN mode switching constraints for EEPROM/CSEc operations, ASIL-B capable power management, pin-to-pin compatibility across S32K14x 144-pin LQFP variants, and qualification for automotive AEC-Q100 Grade 2.

Technical Context

The FS32K144HRT0CLLT implements a dual-core-capable architecture with Arm Cortex-M4F core (112 MHz HSRUN / 80 MHz RUN), integrated FPU, DSP extensions, and NVIC. Its clock system includes SOSC (4–40 MHz), FIRC (48 MHz), SPLL (up to 112 MHz), and LPO (128 kHz), enabling precise timing for deterministic control loops.

Power management uses PMC with five modes (HSRUN, RUN, STOP, VLPR, VLPS); CSEc execution and EEPROM writes require explicit transition from HSRUN to RUN mode (80 MHz) due to hardware-enforced exclusion. Memory subsystem includes ECC-protected flash/SRAM, FlexNVM for EEPROM emulation, and QuadSPI with HyperBus™ support for external code/data expansion.

Key Specifications

Pinout & Package

FS32K144HRT0CLLT 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-specific IO Signal Description multiplexing sheet; all pins support GPIO interrupt capability, and dedicated pins provide differential clock inputs, JTAG/SWD debug, FlexCAN transceiver interfaces, and analog reference routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K144HRT0CLLT, the S32K144HRT0MLLT extends thermal operating range without altering software or layout, while the S32K146HRT0CLLT increases memory and networking capacity for more complex domain controllers - both retain identical core architecture, safety mechanisms, and toolchain compatibility.

Availability

FS32K144HRT0CLLT is available at Aetrix Electronics and suitable for automotive body control, electric power steering, battery management, and ADAS sensor hub applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualification.

Supply support for FS32K144HRT0CLLT 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The S32K1xx family is NXP's automotive-qualified Arm Cortex-M MCU platform designed specifically for functional safety (ASIL-B) and security (SHE/CSEc) in electronic control units, with emphasis on real-time performance, power efficiency, and seamless integration into AUTOSAR and ISO 26262 workflows.

FAQ

What is the maximum operating frequency of the FS32K144HRT0CLLT and under what conditions?

The FS32K144HRT0CLLT achieves up to 112 MHz in HSRUN mode, requiring VDD ≥2.7 V and ambient temperature ≤105 °C. At 125 °C ambient (M-grade), maximum frequency drops to 80 MHz in RUN mode. Operation above 105 °C ambient in HSRUN mode is not supported per thermal specifications in the datasheet.

Does the FS32K144HRT0CLLT support CAN-FD, and how is it implemented?

Yes, the FS32K144HRT0CLLT supports CAN-FD through its FlexCAN modules. The device includes three FlexCAN instances, each configurable for Classical CAN or CAN-FD (ISO 11898-1), with bit rates up to 5 Mbps in FD mode. External CAN transceivers and proper bus termination are required; no internal transceiver is integrated.

Can CSEc cryptographic operations be executed while the FS32K144HRT0CLLT runs at 112 MHz?

No. CSEc (Cryptographic Services Engine) operations and EEPROM writes/erases are explicitly prohibited in HSRUN mode (112 MHz). The FS32K144HRT0CLLT must transition to RUN mode (80 MHz) before initiating these functions; attempting them in HSRUN mode triggers error flags and halts execution.

What package type and pin count does the FS32K144HRT0CLLT use, and is it pin-compatible with other S32K14x variants?

The FS32K144HRT0CLLT uses a 144-pin LQFP package (20 × 20 mm, 0.5 mm pitch) with thermal pad. It is pin-to-pin compatible with all other S32K14x devices offered in the 144-pin LQFP option, including S32K142, S32K146, and S32K148 - enabling hardware reuse across performance tiers.

How does the FS32K144HRT0CLLT meet automotive functional safety requirements?

The FS32K144HRT0CLLT supports ASIL-B compliance via integrated safety mechanisms: ECC on flash/SRAM, System MPU for memory partitioning, CRC module, dual watchdogs (WDOG and EWM), lockstep-capable peripherals, and hardware-assisted self-tests. These features are documented in the S32K1xx Functional Safety Manual and certified per ISO 26262.