NXP Semiconductors FS32K148HAT0MLLR

Overview

FS32K148HAT0MLLR from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB flash, 256 KB SRAM (with ECC), and support for HSRUN mode at 112 MHz. It integrates FlexCAN with optional CAN-FD, Ethernet MAC (10/100 Mbps with IEEE 1588), dual 12-bit ADCs (up to 32 channels), CSEc security engine, and operates across -40 °C to +125 °C ambient temperature - designed for body control modules and gateway ECUs requiring functional safety up to ASIL-B.

For engineers reviewing the FS32K148HAT0MLLR datasheet, FS32K148HAT0MLLR pinout, FS32K148HAT0MLLR application, or FS32K148HAT0MLLR equivalent, key selection considerations include its 100-pin LQFP package, dual-core debug capability (SWD/JTAG), real-time timer suite (LPIT, FTM, PDB), and mandatory RUN-mode execution for CSEc/EEPROM operations - critical for secure boot and data logging in automotive powertrain and chassis systems.

Technical Context

The FS32K148HAT0MLLR implements a dual-core debug architecture with Arm Cortex-M4F core (112 MHz HSRUN / 80 MHz RUN) and integrated FPU, NVIC, and DSP extensions. Its memory subsystem includes ECC-protected 2 MB flash, 256 KB SRAM, 64 KB FlexNVM for EEPROM emulation, and 4 KB FlexRAM configurable as SRAM or EEPROM.

Power management uses PMC with five modes (HSRUN, RUN, STOP, VLPR, VLPS); CSEc cryptographic operations and FlexNVM writes are restricted to RUN mode (80 MHz) due to timing constraints. Clocking supports SOSC (4–40 MHz), FIRC (48 MHz), SIRC (8 MHz), LPO (128 kHz), and SPLL (up to 112 MHz).

Key Specifications

Pinout & Package

FS32K148HAT0MLLR is housed in a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the S32K1xx Reference Manual IO Signal Description sheet; all pins support GPIO interrupt capability, and dedicated pins serve clock inputs (SOSC, RTC_CLKIN), reset (POR_B), debug (SWDIO/SWCLK), and power domains (VDD, VDDA, VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K148HAT0MLLR, FS32K146HAT0MLLR reduces memory and removes Ethernet to lower cost while retaining pin compatibility, whereas FS32K148HRT0MLLR extends temperature range to 150 °C without altering functionality - enabling reuse of firmware and layout across thermal variants.

Availability

FS32K148HAT0MLLR is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateway ECUs, and electric power steering support systems requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 qualification.

Supply support for FS32K148HAT0MLLR 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 over 30 years of automotive MCU heritage and ISO/TS 16949-certified manufacturing.

The S32K1xx family - including FS32K148HAT0MLLR - was engineered specifically for automotive body, gateway, and chassis applications demanding ASIL-B compliance, functional safety, and seamless integration with AUTOSAR and SAE J1939 stacks.

FAQ

What is the maximum operating frequency of the FS32K148HAT0MLLR, and under what conditions is it guaranteed?

The FS32K148HAT0MLLR achieves 112 MHz in HSRUN mode, guaranteed across -40 °C to +125 °C ambient temperature when powered within 2.97–5.5 V. However, CSEc security operations and FlexNVM writes require switching to RUN mode (80 MHz) - this restriction is enforced by hardware to prevent timing violations and error flag assertion during secure execution.

Does the FS32K148HAT0MLLR support CAN-FD, and how many CAN interfaces does it include?

Yes, the FS32K148HAT0MLLR includes three FlexCAN modules, each supporting CAN-FD (ISO 11898-1:2015) with bit rates up to 5 Mbps in FD mode. All three modules are fully independent, supporting concurrent operation on separate buses - essential for multi-domain vehicle networks requiring simultaneous powertrain, chassis, and infotainment CAN traffic.

What package type and pin count does the FS32K148HAT0MLLR use, and is it pin-compatible with other S32K1xx devices?

The FS32K148HAT0MLLR uses a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch). Per NXP's documentation, all S32K1xx devices sharing the same package (e.g., 100-pin LQFP) are pin-to-pin compatible - enabling scalable design reuse across memory/peripheral variants like FS32K146HAT0MLLR without PCB redesign.

How does the FS32K148HAT0MLLR implement functional safety for ASIL-B compliance?

The FS32K148HAT0MLLR achieves ASIL-B readiness through hardware-enforced safety mechanisms: System MPU for crossbar-level memory protection, ECC on flash and SRAM, dual watchdogs (WDOG + EWM), CRC acceleration unit, lockstep-capable peripherals, and diagnostic firmware libraries in the S32 SDK - all validated per ISO 26262 Part 5 requirements for automotive safety-related systems.

Can the FS32K148HAT0MLLR execute secure cryptographic operations while running at 112 MHz?

No - the FS32K148HAT0MLLR cannot execute CSEc (Cryptographic Services Engine) operations or FlexNVM write/erase commands in HSRUN mode (112 MHz). The device must transition to RUN mode (80 MHz) for these functions; attempting them in HSRUN triggers hardware error flags and halts secure execution - a deliberate architectural constraint to ensure timing predictability and fault containment.