NXP Semiconductors FS32K146HAT0VLLR

Overview

FS32K146HAT0VLLR from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB flash, 256 KB SRAM (both with ECC), and dual 12-bit ADCs supporting up to 32 channels each. It operates at up to 112 MHz in HSRUN mode and -40 °C to +105 °C ambient, targeting body control modules, gateway ECUs, and battery management systems requiring ASIL-B functional safety compliance.

For engineers reviewing the FS32K146HAT0VLLR datasheet, FS32K146HAT0VLLR pinout, FS32K146HAT0VLLR application, or FS32K146HAT0VLLR equivalent, key selection criteria include its 100-pin LQFP package, integrated CSEc security engine, FlexCAN with optional CAN-FD support, and mandatory mode-switching (to RUN at 80 MHz) for EEPROM/CSEc operations - all critical for automotive ECU design validation.

Technical Context

The FS32K146HAT0VLLR implements a dual-core architecture with Arm Cortex-M4F as primary execution core and M0+ for low-power background tasks, coordinated via AXBS-Lite crossbar switch. Its memory subsystem includes ECC-protected 2 MB flash, 64 KB FlexNVM for EEPROM emulation, and 4 KB FlexRAM configurable as SRAM or EEPROM backup.

Power management uses PMC with five modes (HSRUN/RUN/STOP/VLPR/VLPS); HSRUN enables 112 MHz operation but disables CSEc and EEPROM writes - requiring explicit transition to RUN mode (80 MHz) for secure operations. Clocking integrates SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz) with flexible peripheral clock gating.

Key Specifications

Pinout & Package

FS32K146HAT0VLLR is housed in a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow the S32K14x family standard layout, supporting full GPIO remapping via TRGMUX and I/O multiplexing per the Reference Manual's signal description sheets.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K146HAT0VLLR, FS32K144HAT0MLLR reduces memory and peripheral count for cost-sensitive designs, while FS32K148HAT0VLHR expands connectivity with Ethernet and audio interfaces - neither is pin-compatible, requiring PCB redesign for migration.

Availability

FS32K146HAT0VLLR is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, and battery management systems requiring stable component supply across extended product lifecycles and rigorous environmental qualification.

Supply support for FS32K146HAT0VLLR 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 functional safety and automotive-grade reliability.

The S32K1xx family - including FS32K146HAT0VLLR - was designed specifically for automotive electronic control units requiring ASIL-B compliance, robust security, and seamless integration into AUTOSAR-based software architectures.

FAQ

What is the maximum operating frequency of the FS32K146HAT0VLLR and under what conditions?

The FS32K146HAT0VLLR achieves 112 MHz in HSRUN mode, but only when supplied with ≥2.97 V and operating within -40 °C to +105 °C ambient. At 112 MHz, CSEc cryptographic operations and EEPROM writes are disabled; the device must switch to RUN mode (80 MHz) to execute those functions safely. This behavior is enforced by hardware error flags.

Does the FS32K146HAT0VLLR support CAN-FD, and how many instances are available?

Yes, the FS32K146HAT0VLLR integrates three FlexCAN modules, all of which support CAN-FD per ISO 11898-1, enabling data rates up to 5 Mbps in FD mode. Each module has independent message buffers and supports flexible bit timing, making FS32K146HAT0VLLR suitable for high-throughput automotive networks like domain controllers or ADAS sensor fusion hubs.

How does the FS32K146HAT0VLLR handle memory protection and functional safety compliance?

The FS32K146HAT0VLLR implements NXP's system-level Memory Protection Unit (MPU) at the crossbar switch, enforcing access rights for CPU, DMA, and Ethernet masters across protected memory regions. Combined with ECC on flash and SRAM, CRC module, dual watchdogs (WDOG/EWM), and ASIL-B-certified safety mechanisms, it meets ISO 26262 requirements for automotive safety-critical applications.

What package type and pin count does the FS32K146HAT0VLLR use?

The FS32K146HAT0VLLR is packaged in a 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad. This package is pin-to-pin compatible with other S32K14x devices in the same footprint, such as FS32K144 and FS32K148 variants, enabling scalable hardware design across performance tiers without PCB redesign.

Can the FS32K146HAT0VLLR perform secure boot and firmware updates?

Yes, the FS32K146HAT0VLLR includes the Cryptographic Services Engine (CSEc), which implements AES-128/256, SHA-256, RSA-2048, and ECC P-256 per the SHE specification. This enables hardware-accelerated secure boot, authenticated firmware updates, and key provisioning - all essential for protecting against unauthorized code execution and ensuring OTA update integrity in automotive ECUs.