NXP Semiconductors FS32K148HET0CLQT

Overview

FS32K148HET0CLQT 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), Ethernet MAC (10/100 Mbps with IEEE 1588), and supports ASIL-B functional safety in automotive body control modules.

For engineers reviewing the FS32K148HET0CLQT datasheet, FS32K148HET0CLQT pinout, FS32K148HET0CLQT application, or FS32K148HET0CLQT equivalent, this page delivers verified specifications, package mapping to 100-pin LQFP, validated alternative parts, and design-critical timing/power/security constraints - including mandatory RUN-mode execution for CSEc and EEPROM operations.

Technical Context

The FS32K148HET0CLQT implements a dual-core architecture with Arm Cortex-M4F as primary core (112 MHz HSRUN / 80 MHz RUN) and optional Cortex-M0+ co-processor support via software configuration. Its memory subsystem includes ECC-protected 2 MB program flash, 64 KB FlexNVM for data flash/EEPROM emulation, and 256 KB SRAM with 4 KB FlexRAM configurable as SRAM or EEPROM.

Peripherals are orchestrated via AXBS-Lite crossbar switch with eDMA (16-channel, 63 request sources), TRGMUX for flexible peripheral triggering, and system-level safety mechanisms including NXP's system MPU (crossbar-based memory protection), CRC module, WDOG/EWM watchdogs, and IEEE 1588-capable Ethernet MAC with SAI audio interfaces.

Key Specifications

Pinout & Package

FS32K148HET0CLQT is housed in a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch), with 73 GPIOs, dedicated power/ground pins, and function-mapped peripherals including three CAN transceiver interfaces, Ethernet RMII signals, and dual ADC reference inputs. Pin assignments follow the S32K14x family IO Signal Description multiplexing scheme.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K148HET0CLQT, S32K146HFT0MLQT trades flash capacity and Ethernet for lower cost in non-time-critical gateways, while S32K148HRT0MLQT sacrifices HSRUN performance and high-temp qualification for simplified thermal management in less demanding environments.

Availability

FS32K148HET0CLQT is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering systems, vehicle gateways, and ADAS sensor hubs requiring stable component supply across long production lifecycles.

Supply support for FS32K148HET0CLQT 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 Arm-based MCUs and functional safety certification.

The S32K1xx family - including FS32K148HET0CLQT - was designed specifically for automotive electronic control units requiring ASIL-B compliance, secure over-the-air updates, and heterogeneous communication (CAN-FD, Ethernet, LIN), targeting next-generation zonal architectures.

FAQ

What is the maximum operating frequency of the FS32K148HET0CLQT, and under what conditions?

The FS32K148HET0CLQT operates at up to 112 MHz in HSRUN mode, but only within its specified ambient temperature range of -40 °C to +125 °C and supply voltage of 2.7 V to 5.5 V. At 112 MHz, the device must remain in HSRUN mode - however, CSEc security operations and EEPROM writes/erases are prohibited in this mode and require switching to RUN mode (80 MHz). This constraint is enforced by hardware error flags.

Does the FS32K148HET0CLQT support CAN-FD, and how many instances are available?

Yes, the FS32K148HET0CLQT integrates three FlexCAN modules, all supporting CAN-FD (ISO 11898-1) with data rates up to 5 Mbps. Each module has dedicated TX/RX pins and full message RAM with hardware acceptance filtering. The "E" in the part number (FS32K148HET0CLQT) explicitly denotes Ethernet + Serial Audio Interface capability, confirming full peripheral enablement including all three CAN-FD controllers.

What is the purpose of the CSEc engine in the FS32K148HET0CLQT, and are there operational restrictions?

The Cryptographic Services Engine (CSEc) in the FS32K148HET0CLQT implements SHE-compliant secure boot, key derivation, AES-128 encryption/decryption, SHA-256 hashing, and ECDSA signing - all critical for automotive OTA security. However, CSEc execution is strictly prohibited in HSRUN mode (112 MHz); the device must enter RUN mode (80 MHz) to perform any CSEc operation or EEPROM write/erase, or it will trigger hardware error flags.

Which package type does the FS32K148HET0CLQT use, and is it pin-compatible with other S32K14x devices?

The FS32K148HET0CLQT uses a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch), as confirmed by the "LQ" suffix in its ordering code. Per NXP's documentation, all S32K14x devices sharing the same package option (e.g., 100-pin LQFP) are pin-to-pin compatible - enabling hardware reuse across variants like S32K146 and S32K144 without PCB redesign.

How does the FS32K148HET0CLQT handle memory reliability in automotive environments?

The FS32K148HET0CLQT ensures memory reliability through Error-Correcting Code (ECC) on both 2 MB program flash and 256 KB SRAM, detecting and correcting single-bit errors and detecting multi-bit errors. This ECC protection is active during normal operation and critical for maintaining firmware and runtime data integrity in harsh automotive environments with radiation-induced soft errors.