NXP Semiconductors FS32K146HAT0VLQT

Overview

FS32K146HAT0VLQT 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 automotive body control modules.

For engineers reviewing the FS32K146HAT0VLQT datasheet, FS32K146HAT0VLQT pinout, FS32K146HAT0VLQT application, or FS32K146HAT0VLQT equivalent, this page delivers verified specifications, package mapping, functional alternatives, and design-critical timing/security constraints - including mandatory RUN-mode switching for CSEc operations and EEPROM emulation.

Technical Context

The FS32K146HAT0VLQT implements a dual-core architecture with Arm Cortex-M4F (primary) and M0+ (auxiliary), supporting concurrent real-time control and safety monitoring. Its clock system integrates SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with configurable power modes (HSRUN/RUN/STOP/VLPR/VLPS) governed by PMC.

Memory subsystem includes ECC-protected 2 MB flash, 64 KB FlexNVM for data storage/EEPROM emulation, 256 KB SRAM, and 4 KB FlexRAM usable as SRAM or EEPROM. Safety features include System MPU (crossbar-level memory protection), CRC module, WDOG/EWM, and ASIL-B-capable CSEc cryptographic engine.

Key Specifications

Pinout & Package

FS32K146HAT0VLQT is packaged in a 100-pin LQFP (Lead-Free, RoHS-compliant) with 0.5 mm pitch. This package supports full peripheral availability including all three FlexCAN interfaces, dual ADCs, Ethernet MAC, and 156 GPIOs (pin-mapped per package variant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K146HAT0VLQT, S32K144HAT0MLQT offers reduced memory and no Ethernet at lower cost for simpler BCMs, while S32K148HAT0VLQT adds Ethernet and SAI for gateway/audio roles - both share identical CSEc, CAN-FD, and safety architecture.

Availability

FS32K146HAT0VLQT is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering systems, and zonal gateway designs requiring stable component supply, long-term lifecycle support, and ASIL-B functional safety compliance.

Supply support for FS32K146HAT0VLQT 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 standards.

The S32K1xx family is designed specifically for automotive electronic control units requiring ASIL-B compliance, robust security, and mixed-signal integration - targeting body electronics, chassis, and gateway applications.

FAQ

What is the maximum operating frequency of the FS32K146HAT0VLQT and under what conditions?

The FS32K146HAT0VLQT achieves 112 MHz in HSRUN mode, but only when operating within its specified voltage (2.7–5.5 V) and temperature (-40 °C to 105 °C) ranges. Critical operations such as CSEc cryptographic execution or EEPROM emulation require switching to RUN mode at 80 MHz - attempting them at 112 MHz triggers error flags and halts secure functions. This constraint is enforced in hardware and documented in the S32K1xx Data Sheet Rev. 15.

Does the FS32K146HAT0VLQT support CAN-FD, and how many controllers are available?

Yes, the FS32K146HAT0VLQT integrates three independent FlexCAN modules, each supporting CAN-FD per ISO 11898-1 with data rates up to 5 Mbps and payloads up to 64 bytes. All three controllers are fully accessible in the 100-pin LQFP package, with dedicated TX/RX pins mapped to separate physical layers - enabling multi-bus architectures such as powertrain + chassis + infotainment segmentation.

What memory protection mechanisms does the FS32K146HAT0VLQT provide for ASIL-B compliance?

The FS32K146HAT0VLQT implements a system-level Memory Protection Unit (MPU) at the crossbar switch, assigning configurable access rights (read/write/execute) to memory regions per master (CPU, DMA, Ethernet). Combined with ECC on 2 MB flash and 256 KB SRAM, CRC module, WDOG/EWM, and CSEc-based secure boot, it meets ASIL-B requirements per ISO 26262. The MPU prevents unauthorized peripheral or memory access - a critical requirement for partitioned safety software.

Can the FS32K146HAT0VLQT execute cryptographic operations while running at 112 MHz?

No. The FS32K146HAT0VLQT cannot execute CSEc (Cryptographic Services Engine) operations in HSRUN mode at 112 MHz. Attempting AES encryption, SHA hashing, or key generation triggers hardware error flags. The device must transition to RUN mode (80 MHz) before initiating any CSEc command - a hardwired restriction confirmed in the S32K1xx Data Sheet Rev. 15 Section 1.1 and Figure 3 footnotes. This ensures timing predictability and power stability during security-critical sequences.

What is the ADC configuration supported by the FS32K146HAT0VLQT?

The FS32K146HAT0VLQT includes two independent 12-bit SAR ADC modules, each supporting up to 32 analog input channels (64 total), with 1 Msps conversion rate per module. Inputs are multiplexed across GPIO pins and support hardware triggering from FTM, LPIT, or PDB - enabling synchronized sampling for motor control or sensor fusion. Both ADCs feature programmable gain, offset calibration, and hardware averaging, and operate across the full -40 °C to 105 °C temperature range with guaranteed linearity.