NXP Semiconductors FS32K146HFT0VLQT

Overview

FS32K146HFT0VLQT 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 FlexCAN with optional CAN-FD, three LPUART/LIN modules, dual 12-bit ADCs (up to 32 channels), CSEc security engine, and operates from -40 °C to 105 °C. It is used in body control modules requiring functional safety up to ASIL-B.

For engineers reviewing the FS32K146HFT0VLQT datasheet, FS32K146HFT0VLQT pinout, FS32K146HFT0VLQT application, or FS32K146HFT0VLQT equivalent, key selection considerations include its 112 MHz HSRUN performance, dual ADC capability, CAN-FD readiness, CSEc-based cryptographic services, and V-grade temperature qualification for under-hood automotive use.

Technical Context

The FS32K146HFT0VLQT implements a dual-core architecture with Arm Cortex-M4F as primary execution core and M0+ for low-power background tasks. Its clock system includes SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), enabling dynamic mode switching between HSRUN, RUN, STOP, VLPR, and VLPS.

Safety and security are enforced via NXP's system MPU (crossbar-level memory protection), ECC on flash/SRAM, CRC module, WDOG/EWM watchdogs, and CSEc implementing SHE-compliant cryptographic functions - all validated for ASIL-B compliance per ISO 26262.

Key Specifications

Pinout & Package

FS32K146HFT0VLQT is packaged in a 100-pin LQFP (LH package code), with 73 GPIO pins supporting interrupt, DMA, and configurable pull-up/down. Pin mapping follows NXP's S32K14x IO Signal Description multiplexing sheet; pin functions are dynamically assigned via SIM and PORT registers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S32K144HFT0VLQT, FS32K146HFT0VLQT provides 1 MB more flash and 64 KB more SRAM for complex AUTOSAR stacks, while compared with S32K148HFT0VLQT it omits Ethernet and SAI - reducing cost and complexity where those interfaces are unused.

Availability

FS32K146HFT0VLQT is available at Aetrix Electronics and suitable for body control modules, electric power steering units, battery management systems, and ADAS sensor hubs requiring stable component supply across automotive production lifecycles.

Supply support for FS32K146HFT0VLQT 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 designed specifically for automotive electronic control units (ECUs), emphasizing functional safety (ASIL-B), security (SHE/CSEc), and robust operation in harsh environments - with FS32K146HFT0VLQT targeting mid-tier body and chassis applications.

FAQ

What is the maximum operating frequency of the FS32K146HFT0VLQT?

The FS32K146HFT0VLQT operates at up to 112 MHz in HSRUN mode and 80 MHz in RUN mode. The 112 MHz frequency is only permitted in HSRUN mode with voltage ≥2.7 V and ambient temperature ≤105 °C. In RUN mode, it sustains 80 MHz across the full -40 °C to 150 °C junction range, making FS32K146HFT0VLQT suitable for both performance-critical and thermally constrained applications.

Does the FS32K146HFT0VLQT support CAN-FD?

Yes, the FS32K146HFT0VLQT includes three FlexCAN modules that support CAN-FD per ISO 11898-1, including bit-rate switching and payloads up to 64 bytes. CAN-FD operation requires external CAN transceivers and proper PCB layout for signal integrity; the FS32K146HFT0VLQT itself handles protocol framing, filtering, and DMA-assisted message buffering without CPU intervention.

What safety certifications apply to the FS32K146HFT0VLQT?

The FS32K146HFT0VLQT is designed to support ASIL-B compliance per ISO 26262, with integrated safety mechanisms including ECC on flash/SRAM, system MPU for memory partitioning, CRC module, dual watchdogs (WDOG and EWM), and lockstep-capable peripherals. While the device itself is not pre-certified, NXP provides safety manuals, FMEDA reports, and diagnostic software libraries to accelerate ASIL-B system certification for FS32K146HFT0VLQT-based designs.

Can the FS32K146HFT0VLQT execute CSEc security operations in HSRUN mode?

No. CSEc (Cryptographic Services Engine) operations - including AES encryption, SHA hashing, and secure boot verification - are prohibited in HSRUN mode (112 MHz). The FS32K146HFT0VLQT must switch to RUN mode (80 MHz) to execute any CSEc command or EEPROM write/erase. This restriction is enforced by hardware and triggers error flags if violated, ensuring deterministic timing isolation between high-speed control and security-critical functions.

What package type and pin count does the FS32K146HFT0VLQT use?

The FS32K146HFT0VLQT uses a 100-pin LQFP package (package code LH), with 73 general-purpose I/O pins supporting interrupt, DMA, and peripheral multiplexing. It is pin-compatible with other S32K14x devices in the same package variant, enabling scalable design reuse across the S32K142/S32K144/S32K146/S32K148 family - provided peripheral assignments match the target device's feature set.