NXP Semiconductors FS32K144HRT0VLLT

Overview

FS32K144HRT0VLLT from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB flash, 256 KB SRAM (both with ECC), and support for HSRUN mode at 112 MHz. It integrates CSEc security engine, dual 12-bit ADCs (up to 32 channels), three FlexCAN modules (CAN-FD capable), and operates across -40 °C to +105 °C ambient temperature. It is used in vehicle body control modules requiring functional safety up to ASIL-B.

For engineers reviewing the FS32K144HRT0VLLT datasheet, FS32K144HRT0VLLT pinout, FS32K144HRT0VLLT application, or FS32K144HRT0VLLT equivalent, key selection considerations include its 144-pin LQFP package, 112 MHz HSRUN/80 MHz RUN dual-frequency operation, CAN-FD interface count, CSEc cryptographic acceleration, and mandatory mode switching (to RUN) for EEPROM/CSEc writes - all critical for automotive ECU timing and safety-critical firmware updates.

Technical Context

The FS32K144HRT0VLLT implements a dual-core-capable architecture with Arm Cortex-M4F core featuring single-precision FPU and DSP extensions, paired with configurable NVIC and debug infrastructure including SWD, ITM, DWT, and TPIU. Its memory subsystem includes ECC-protected 2 MB flash, 256 KB SRAM, 64 KB FlexNVM for EEPROM emulation, and 4 KB FlexRAM.

Power management is handled by PMC supporting five modes: HSRUN (112 MHz), RUN (80 MHz), STOP, VLPR, and VLPS - with explicit restrictions that CSEc execution and EEPROM operations are prohibited in HSRUN mode and require transition to RUN mode. Clocking relies on SOSC (4–40 MHz), FIRC (48 MHz), SIRC (8 MHz), LPO (128 kHz), and SPLL (up to 112 MHz).

Key Specifications

Pinout & Package

FS32K144HRT0VLLT is housed in a 144-pin LQFP package (16 mm × 16 mm, 0.5 mm pitch), RoHS-compliant, with exposed thermal pad. Pinout conforms to S32K14x family layout; full signal mapping requires reference to the S32K144-specific IO Signal Description sheet in the Reference Manual.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S32K146HRT0VLLT and S32K144HRT0MLLT, the FS32K144HRT0VLLT delivers the highest integration density for V-grade automotive body control at minimal footprint - retaining full CAN-FD, CSEc, and ASIL-B capability while avoiding over-specification in memory or temperature range.

Availability

FS32K144HRT0VLLT is available at Aetrix Electronics and suitable for automotive body control modules, door electronics, gateway ECUs, and chassis domain controllers requiring stable component supply, long lifecycle support, and AEC-Q100 qualification.

Supply support for FS32K144HRT0VLLT 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 focused on automotive, industrial, IoT, and communication infrastructure solutions, with deep expertise in secure microcontrollers and radar processing.

The S32K1xx family - including FS32K144HRT0VLLT - was designed specifically for automotive electronic control units requiring functional safety (ASIL-B), security (SHE/CSEc), and real-time performance in harsh environments.

FAQ

What is the maximum operating frequency of the FS32K144HRT0VLLT, and under what conditions?

The FS32K144HRT0VLLT achieves 112 MHz in HSRUN mode and 80 MHz in RUN mode. HSRUN mode requires VDD ≥ 2.7 V and ambient temperature ≤ +105 °C; operation above 105 °C mandates RUN mode at 80 MHz. The device automatically transitions between modes based on configuration and safety requirements - FS32K144HRT0VLLT must drop to RUN mode for CSEc or EEPROM operations.

Does the FS32K144HRT0VLLT support CAN-FD, and how many interfaces are available?

Yes, the FS32K144HRT0VLLT integrates three FlexCAN modules, each supporting CAN-FD (ISO 11898-1) with data rates up to 5 Mbps. All three are fully functional in the 144-pin LQFP package, with dedicated TX/RX pins mapped to separate physical layers - enabling concurrent high-speed diagnostics, inter-ECU messaging, and gateway routing within FS32K144HRT0VLLT-based designs.

What memory protection mechanisms does the FS32K144HRT0VLLT provide for functional safety compliance?

The FS32K144HRT0VLLT implements NXP's system MPU (Memory Protection Unit) at the crossbar switch level, enforcing access rights per master (CPU, DMA, Ethernet). Combined with ECC on 2 MB flash and 256 KB SRAM, CRC module, WDOG, and EWM, it meets ASIL-B requirements per ISO 26262. These features are integral to FS32K144HRT0VLLT's safety case and validated in NXP's FMEDA reports.

Can the FS32K144HRT0VLLT execute cryptographic operations while running at 112 MHz?

No. The FS32K144HRT0VLLT prohibits CSEc (Cryptographic Services Engine) execution and EEPROM write/erase operations in HSRUN mode (112 MHz). Attempting these triggers error flags; the device must first transition to RUN mode (80 MHz) to safely perform security or non-volatile memory operations - a hard architectural constraint documented in the FS32K144HRT0VLLT datasheet.

What is the ADC resolution and channel count supported by the FS32K144HRT0VLLT?

The FS32K144HRT0VLLT includes two independent 12-bit SAR ADC modules, each supporting up to 32 analog input channels (64 total possible, with pin multiplexing constraints). Each ADC achieves 1 Msps conversion rate with configurable sample time, hardware triggering, and DMA support - enabling synchronized multi-sensor acquisition critical in FS32K144HRT0VLLT-based body control applications.