NXP Semiconductors FS32K146HAT0MLQT

Overview

FS32K146HAT0MLQT from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with HSRUN mode up to 112 MHz, 2 MB ECC-protected flash, 256 KB SRAM, and integrated CSEc security engine. It supports CAN-FD, FlexCAN, LPUART/LIN, LPSPI, LPI2C, FlexIO, and 12-bit ADCs - deployed in vehicle body control modules requiring ASIL-B functional safety compliance.

For engineers reviewing the FS32K146HAT0MLQT datasheet, FS32K146HAT0MLQT pinout, FS32K146HAT0MLQT application, or FS32K146HAT0MLQT equivalent, key selection considerations include its -40 °C to +125 °C extended temperature rating (M-grade), 100-pin LQFP package, dual-core debug support via SWD/JTAG, and mandatory RUN-mode (80 MHz) operation for CSEc security or EEPROM emulation functions.

Technical Context

The FS32K146HAT0MLQT implements a single Arm Cortex-M4F core with FPU and DSP extensions, operating at up to 112 MHz in HSRUN mode or 80 MHz in RUN mode - with strict mode separation enforced for security and EEPROM operations. Its AXBS-Lite crossbar switch enables concurrent access by CPU, eDMA, and Ethernet MAC to memory and peripherals while enforcing region-based protection via NXP's system MPU.

Power management includes five low-power modes (HSRUN, RUN, STOP, VLPR, VLPS), clock gating per peripheral, and dedicated oscillators: 4–40 MHz SOSC, 48 MHz FIRC, 8 MHz SIRC, and 128 kHz LPO. The device integrates dual 12-bit ADCs (up to 32 channels each), eight FlexTimer modules (64 PWM/IC/OC channels), and three FlexCAN controllers with optional CAN-FD support.

Key Specifications

Pinout & Package

FS32K146HAT0MLQT 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 up to 156 GPIOs across all package variants - actual usable I/O count depends on peripheral multiplexing and package-specific signal availability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K146HAT0MLQT, FS32K148HAT0MLQT adds Ethernet and SAI for networked systems, while FS32K144HAT0MLQT reduces flash and CAN-FD count for lower-tier modules - all share identical 100-pin LQFP packaging and M-grade temperature qualification.

Availability

FS32K146HAT0MLQT is available at Aetrix Electronics and suitable for automotive body control modules, door module controllers, roof module controllers, and smart junction boxes requiring stable component supply across long production lifecycles.

Supply support for FS32K146HAT0MLQT 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 automotive, industrial, and IoT solutions, with deep expertise in functional safety and secure microcontrollers.

The S32K1xx family - including FS32K146HAT0MLQT - was designed specifically for automotive body and chassis applications demanding ASIL-B compliance, robust communication, and long-term reliability in harsh environments.

FAQ

What is the maximum operating frequency of the FS32K146HAT0MLQT, and under what conditions?

The FS32K146HAT0MLQT operates at up to 112 MHz in HSRUN mode and 80 MHz in RUN mode. However, CSEc security operations and EEPROM emulation must be executed exclusively in RUN mode - attempting them in HSRUN mode triggers error flags. This mode separation is hardware-enforced and documented in the S32K1xx Data Sheet Rev. 15.

Does the FS32K146HAT0MLQT support CAN-FD, and how many instances are available?

Yes, the FS32K146HAT0MLQT integrates three FlexCAN modules, all supporting CAN-FD protocol per ISO 11898-1:2015. Each module is independently configurable for bit rates up to 5 Mbps and supports both classic CAN and CAN-FD frames - confirmed in the S32K1xx Feature Comparison table and peripheral block diagram.

What package type and pin count does the FS32K146HAT0MLQT use?

The FS32K146HAT0MLQT uses a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad. This matches the pinout definition for S32K14x devices in the 100-pin LQFP variant, enabling drop-in compatibility with other members of the S32K14x family in the same package option.

How does the FS32K146HAT0MLQT meet automotive functional safety requirements?

The FS32K146HAT0MLQT achieves ASIL-B readiness through integrated safety mechanisms: System MPU for memory protection, ECC on flash and SRAM, dual watchdogs (WDOG and EWM), CRC acceleration, and lockstep-capable peripherals. These features are validated per ISO 26262 and supported by NXP's S32K1xx Safety Manual and FMEDA reports.

What is the temperature grade of the FS32K146HAT0MLQT, and how does it affect operation?

The FS32K146HAT0MLQT is rated for -40 °C to +125 °C ambient temperature (M-grade). In this grade, HSRUN mode (112 MHz) is limited to ≤105 °C junction temperature, while RUN mode (80 MHz) supports full 125 °C operation - per Thermal Operating Characteristics Table 5 in the S32K1xx Data Sheet Rev. 15.