NXP Semiconductors FS32K146HFT0VMHT

Overview

FS32K146HFT0VMHT 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 125 °C ambient temperature. It is used in body control modules requiring functional safety up to ASIL-B.

For engineers reviewing the FS32K146HFT0VMHT datasheet, FS32K146HFT0VMHT pinout, FS32K146HFT0VMHT application, or FS32K146HFT0VMHT equivalent, key selection criteria include HSRUN/RUN mode switching constraints for EEPROM/CSEc operations, 156 GPIO count, 100-pin LQFP package compatibility, and ISO 26262 capability up to ASIL-B.

Technical Context

The FS32K146HFT0VMHT implements a dual-core architecture with Arm Cortex-M4F as primary execution core and optional M0+ for low-power co-processing - though M0+ is not enabled in this variant per S32K14x family specification. Its clock system includes SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with configurable power modes (HSRUN, RUN, STOP, VLPR, VLPS) managed by PMC.

Memory subsystem features ECC-protected 2 MB program flash, 64 KB FlexNVM for data flash/EEPROM emulation, 256 KB SRAM, and 4 KB FlexRAM usable as SRAM or EEPROM. Safety mechanisms include System MPU (crossbar-level memory protection), CRC module, WDOG/EWM, and CSEc compliant with SHE specification - all validated for ASIL-B systems.

Key Specifications

Pinout & Package

FS32K146HFT0VMHT is housed in a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch), pin-compatible with other S32K14x devices in same package option. The device supports up to 156 GPIOs depending on package; the 100-pin variant provides 81 dedicated I/O pins with interrupt capability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K146HFT0VMHT, S32K148HFT0VLHT adds Ethernet and audio interfaces but requires larger PCB area, while S32K144HFT0VLHT offers identical package and pinout with reduced memory - making it viable for scaled-down implementations where EEPROM emulation is unnecessary.

Availability

FS32K146HFT0VMHT is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering systems, ADAS sensor hubs, and gateway controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for FS32K146HFT0VMHT 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 product line is designed specifically for automotive electronic control units requiring functional safety (ISO 26262), security (SHE/CSEc), and real-time performance - targeting body, chassis, and ADAS applications.

FAQ

What is the maximum operating frequency of the FS32K146HFT0VMHT and under what conditions?

The FS32K146HFT0VMHT operates at up to 112 MHz in HSRUN mode and 80 MHz in RUN mode. HSRUN mode is restricted: CSEc security operations and EEPROM writes/erases must be executed in RUN mode (80 MHz) to avoid error flags. Thermal limits require operation at ≤80 MHz when ambient temperature reaches 125 °C.

Does the FS32K146HFT0VMHT support CAN-FD, and how many CAN interfaces does it include?

Yes, the FS32K146HFT0VMHT includes three FlexCAN modules, each supporting CAN-FD per ISO 11898-1. All three channels are functional in the 100-pin LQFP package. CAN-FD operation requires external transceivers and proper termination; bit rates up to 5 Mbps are supported in FD mode.

What safety certifications and hardware safety features are integrated into the FS32K146HFT0VMHT?

The FS32K146HFT0VMHT is designed to support ISO 26262 ASIL-B compliance. Integrated hardware safety features include ECC on flash and SRAM, System MPU for crossbar-level memory protection, CRC module, dual watchdogs (WDOG and EWM), and lockstep-capable peripherals. These are documented in NXP's S32K1xx Functional Safety Manual.

Can the FS32K146HFT0VMHT execute cryptographic operations while running at 112 MHz?

No. The FS32K146HFT0VMHT triggers error flags if CSEc (Cryptographic Services Engine) operations are attempted in HSRUN mode (112 MHz). The device must switch to RUN mode (80 MHz) before initiating any CSEc command - including AES encryption, SHA hashing, or secure boot validation - as explicitly stated in the datasheet.

What package type and pin count does the FS32K146HFT0VMHT use, and is it pin-compatible with other S32K14x variants?

The FS32K146HFT0VMHT uses a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch). It is pin-to-pin compatible with other S32K14x devices offered in the same 100-pin LQFP option, including S32K144HFT0VLHT and S32K148HFT0VLHT - though peripheral availability depends on pin multiplexing and silicon configuration.