NXP Semiconductors FS32K146HAT0VLLT

Overview

FS32K146HAT0VLLT from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB flash, 256 KB SRAM (both with ECC), 112 MHz HSRUN operation, and integrated CSEc security engine. It features dual 12-bit ADCs (32-channel total), three FlexCAN modules (CAN-FD capable), and operates from -40 °C to 105 °C in LQFP-100 package - deployed in vehicle body control modules requiring functional safety up to ASIL-B.

For engineers reviewing the FS32K146HAT0VLLT datasheet, FS32K146HAT0VLLT pinout, FS32K146HAT0VLLT application, or FS32K146HAT0VLLT equivalent, key selection considerations include HSRUN/RUN mode switching constraints for CSEc/EEPROM operations, FlexCAN FD channel count per package, LQFP-100 I/O allocation (up to 81 GPIO), and voltage compliance (2.7–5.5 V) across temperature.

Technical Context

The FS32K146HAT0VLLT implements a dual-core-capable architecture with Arm Cortex-M4F core (112 MHz HSRUN / 80 MHz RUN), DSP extensions, and single-precision FPU - enabling real-time motor control and sensor fusion. Its memory subsystem includes 2 MB program flash with ECC, 64 KB FlexNVM for EEPROM emulation, and 4 KB FlexRAM configurable as SRAM or EEPROM backup.

Power management integrates PMC with five low-power modes (HSRUN, RUN, STOP, VLPR, VLPS), while clocking supports SOSC (4–40 MHz), FIRC (48 MHz), SIRC (8 MHz), LPO (128 kHz), and SPLL (up to 112 MHz). Safety features include System MPU (crossbar-level memory protection), CRC module, WDOG/EWM, and ECC on flash/SRAM - all aligned with ISO 26262 ASIL-B requirements.

Key Specifications

Pinout & Package

FS32K146HAT0VLLT is housed in a 100-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, thermally enhanced for automotive PCB layouts. Pin assignment follows the S32K14x family standard layout, supporting full peripheral mapping including FlexCAN, ADC, FlexIO, and Ethernet interfaces depending on pin availability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K148HAT0VLLT, FS32K146HAT0VLLT removes Ethernet/SAI overhead while retaining identical CAN-FD, ADC, and security capabilities - delivering better power efficiency and lower thermal load. Against FS32K144HAT0VLLT, it adds 1 MB flash and FlexNVM for future-proof OTA resilience and extended diagnostic data retention.

Availability

FS32K146HAT0VLLT is available at Aetrix Electronics and suitable for automotive body electronics, door module control, roof module integration, and seat control applications requiring stable component supply across long production lifecycles.

Supply support for FS32K146HAT0VLLT 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 qualification.

The S32K1xx series is NXP's scalable family of Arm-based automotive MCUs designed specifically for body, gateway, and chassis control applications - emphasizing ASIL-B compliance, security, and long-term automotive supply chain stability.

FAQ

What is the maximum operating frequency of the FS32K146HAT0VLLT, and under what conditions?

The FS32K146HAT0VLLT operates at up to 112 MHz in HSRUN mode and 80 MHz in RUN mode. HSRUN mode is disabled during CSEc cryptographic operations or FlexNVM EEPROM emulation - the device must switch to RUN mode (80 MHz) to execute those functions, as confirmed in the S32K1xx Data Sheet Rev. 15 section 1.1 and footnote notes.

Does the FS32K146HAT0VLLT support CAN-FD, and how many instances are available?

Yes, the FS32K146HAT0VLLT integrates three FlexCAN modules, all supporting CAN-FD protocol per ISO 11898-1:2015. All three are accessible in the 100-pin LQFP package, with dedicated TX/RX pins mapped to separate port groups - verified in the S32K1xx Feature Comparison Figure 3 and IO Signal Description documentation.

What memory protection mechanisms does the FS32K146HAT0VLLT implement for ASIL-B compliance?

The FS32K146HAT0VLLT implements NXP's system-level Memory Protection Unit (MPU) at the crossbar switch, enforcing access rights per master (CPU, DMA, Ethernet). It also includes ECC on flash and SRAM, CRC module, internal WDOG, and external EWM - collectively meeting ISO 26262 ASIL-B requirements as documented in the S32K1xx Data Sheet sections 1.1 and 3.1.

Is the FS32K146HAT0VLLT pin-compatible with other S32K14x devices in the same package?

Yes, all S32K14x devices sharing the 100-pin LQFP package (e.g., FS32K144HAT0VLLT, FS32K148HAT0VLLT) are pin-to-pin compatible per the S32K1xx Data Sheet Rev. 15 section 3.1 - enabling hardware reuse across performance tiers while maintaining identical PCB layout and signal routing.

What is the ambient temperature range and AEC-Q100 grade for the FS32K146HAT0VLLT?

The FS32K146HAT0VLLT is rated for -40 °C to +105 °C ambient operation (V-grade) and qualifies per AEC-Q100 Grade 2, as specified in Table 5 (Thermal Operating Characteristics) and ordering code decoding ('V' = -40 °C to 105 °C) in the S32K1xx Data Sheet Rev. 15 section 4.2.