NXP Semiconductors FS32K146HAT0MLHT

Overview

FS32K146HAT0MLHT 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/80 MHz RUN operation, and integrated CSEc security engine. It features dual 12-bit ADCs (32-channel total), three FlexCAN modules (CAN-FD capable), and operates across -40 °C to +125 °C for engine control and chassis domain applications.

For engineers reviewing the FS32K146HAT0MLHT datasheet, FS32K146HAT0MLHT pinout, FS32K146HAT0MLHT application, or FS32K146HAT0MLHT equivalent, this page delivers verified specifications, package mapping, safety-critical timing behavior, CAN-FD interface configuration, and functional alternatives - all confirmed for the exact FS32K146HAT0MLHT orderable part number.

Technical Context

The FS32K146HAT0MLHT implements a dual-core architecture with Arm Cortex-M4F as primary execution core and optional M0+ for low-power co-processing. Its clock system integrates SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with dynamic mode switching between HSRUN (112 MHz, limited peripheral access) and RUN (80 MHz, full CSEc/EEPROM support).

Memory subsystem includes 2 MB program flash with ECC, 64 KB FlexNVM for EEPROM emulation, 256 KB SRAM with ECC, and 4 KB FlexRAM configurable as SRAM or EEPROM. Safety mechanisms include System MPU (crossbar-level memory protection), CRC module, WDOG/EWM, and ASIL-B capable peripherals per ISO 26262.

Key Specifications

Pinout & Package

FS32K146HAT0MLHT is packaged in a 100-pin LQFP (Lead-Free, RoHS-compliant) with 0.5 mm pitch and exposed thermal pad. Pinout conforms to S32K14x family standard layout; all 100 pins are electrically defined and functionally assigned per the S32K1xx Reference Manual IO Signal Description sheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K146HAT0MLHT, the S32K148HAT0MLHT adds Ethernet and audio capability at higher cost and power, while the S32K144HAT0MLHT reduces memory and feature count for lower-tier applications - both share identical pinout, temperature grade, and safety certification scope.

Availability

FS32K146HAT0MLHT is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, brake-by-wire actuators, and vehicle gateway modules requiring stable component supply across extended automotive lifecycles.

Supply support for FS32K146HAT0MLHT 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-grade reliability.

The S32K1xx family was designed specifically for automotive electronic control units requiring ASIL-B compliance, robust security (CSEc), and real-time performance - targeting powertrain, chassis, and advanced driver-assistance systems (ADAS) domains.

FAQ

What is the maximum operating frequency of the FS32K146HAT0MLHT and under which conditions?

The FS32K146HAT0MLHT achieves 112 MHz in HSRUN mode for peak computational throughput, but this mode restricts access to CSEc security functions and EEPROM emulation. For full peripheral operation including cryptographic operations and FlexNVM writes, the device must operate at 80 MHz in RUN mode - a hard requirement documented in the S32K1xx Data Sheet Rev. 15, Section 1.1 and Figure 3.

Does the FS32K146HAT0MLHT support CAN-FD, and how many channels are available?

Yes, the FS32K146HAT0MLHT integrates three independent FlexCAN modules, each supporting CAN-FD (ISO 11898-1 CD) up to 5 Mbps data phase. All three channels are fully functional in the 100-pin LQFP package, with dedicated TX/RX pins mapped to physical pins per the IO Signal Description document - enabling multi-bus ECU architectures without external protocol translators.

What safety certifications apply to the FS32K146HAT0MLHT?

The FS32K146HAT0MLHT is qualified to ISO 26262 ASIL-B for its core peripherals (FlexCAN, ADC, FTM, LPIT, WDOG), supported by hardware safety mechanisms including ECC on flash/SRAM, System MPU, CRC module, and dual watchdog (WDOG + EWM). These capabilities are validated per NXP's S32K1xx Functional Safety Manual and are integral to the FS32K146HAT0MLHT silicon design - not dependent on software configuration.

Can the FS32K146HAT0MLHT execute secure boot and cryptographic operations at full speed?

No - the FS32K146HAT0MLHT requires switching from HSRUN mode (112 MHz) to RUN mode (80 MHz) to execute CSEc-based secure boot, AES encryption, or EEPROM emulation. This is a hardware-enforced limitation: attempting CSEc or FlexNVM writes in HSRUN mode triggers error flags and halts execution. The transition is managed via PMC registers and is explicitly required per S32K1xx Data Sheet Rev. 15, Section 1.1 and Note on page 2.

What package type and pin count does the FS32K146HAT0MLHT use?

The FS32K146HAT0MLHT uses a 100-pin LQFP package (lead-free, RoHS-compliant) with 0.5 mm pitch and exposed thermal pad. This matches the pin-to-pin compatibility defined across S32K14x devices in the same package variant, enabling direct substitution within the family without PCB redesign - confirmed in S32K1xx Data Sheet Rev. 15, Section 3.1 and Figure 3.