NXP Semiconductors FS32K148UAT0VLUR

Overview

FS32K148UAT0VLUR 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 operates from -40 °C to 105 °C - designed for body control modules and gateway ECUs requiring functional safety up to ASIL-B.

For engineers reviewing the FS32K148UAT0VLUR datasheet, FS32K148UAT0VLUR pinout, FS32K148UAT0VLUR application, or FS32K148UAT0VLUR equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use-value in automotive subsystems, and two validated alternative parts with precise functional and application-level distinctions.

Technical Context

The FS32K148UAT0VLUR implements a dual-core execution environment via Arm Cortex-M4F (primary) and M0+ (auxiliary), supporting concurrent real-time control and safety monitoring. Its clock architecture integrates SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with dynamic mode switching between HSRUN (112 MHz), RUN (80 MHz), STOP, VLPR, and VLPS.

Memory subsystem includes ECC-protected 2 MB program flash, 64 KB FlexNVM (with EEPROM emulation), 256 KB SRAM, and 4 KB FlexRAM configurable as SRAM or EEPROM - all managed by NXP's system MPU enforcing crossbar-level memory protection across core, DMA, and Ethernet masters.

Key Specifications

Pinout & Package

FS32K148UAT0VLUR is packaged in a 144-pin LQFP (LH package code), with 156 GPIO pins available depending on peripheral configuration and pin multiplexing. The device is pin-to-pin compatible with other S32K14x devices sharing the same 144-pin LQFP footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K148UAT0VLUR, S32K146UAT0VLUR reduces memory and connectivity for cost-sensitive gateways, while S32K148UAT0MLUR extends thermal capability for under-hood deployment - both retain pin compatibility and core safety features.

Availability

FS32K148UAT0VLUR is available at Aetrix Electronics and suitable for automotive body control modules, domain gateways, and electric power steering systems requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 qualification.

Supply support for FS32K148UAT0VLUR 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 silicon.

The S32K1xx family was designed specifically for automotive electronic control units requiring ASIL-B compliance, real-time performance, and integrated security - with FS32K148UAT0VLUR representing the highest-feature variant in the 144-pin LQFP configuration.

FAQ

What is the maximum operating frequency of the FS32K148UAT0VLUR and under what conditions?

The FS32K148UAT0VLUR achieves 112 MHz in HSRUN mode, guaranteed across -40 °C to 105 °C ambient temperature. Operation at this frequency requires VDD ≥ 2.97 V when PLL is engaged; below that threshold, the device defaults to RUN mode at 80 MHz. This distinction is critical for timing-critical CAN-FD and Ethernet tasks in FS32K148UAT0VLUR-based designs.

Does the FS32K148UAT0VLUR support CAN-FD, and how many instances are available?

Yes, the FS32K148UAT0VLUR integrates three independent FlexCAN modules, all supporting CAN-FD protocol with bit rates up to 5 Mbps and payloads up to 64 bytes. Each module includes dedicated message RAM and acceptance filtering - enabling concurrent handling of powertrain, chassis, and infotainment CAN-FD networks within a single FS32K148UAT0VLUR device.

What memory protection mechanisms does the FS32K148UAT0VLUR implement for ASIL-B compliance?

The FS32K148UAT0VLUR employs NXP's system MPU - a crossbar-level memory protection unit that assigns access rights per master (CPU, DMA, Ethernet) to protected memory regions. Unlike Arm Core MPU, it covers all bus masters, enabling robust partitioning of safety-critical and non-safety software. This architecture is validated for ASIL-B per ISO 26262 and is integral to FS32K148UAT0VLUR's functional safety certification.

Can the FS32K148UAT0VLUR execute CSEc security operations while running at 112 MHz?

No. CSEc cryptographic operations (AES, SHA, secure boot) and EEPROM writes/erases are prohibited in HSRUN mode (112 MHz) per NXP documentation. The FS32K148UAT0VLUR must transition to RUN mode (80 MHz) to execute these functions - a hardware-enforced restriction to prevent timing violations and ensure deterministic behavior during security-critical sequences.

What is the ADC configuration supported by the FS32K148UAT0VLUR, and what is its sampling rate?

The FS32K148UAT0VLUR includes two independent 12-bit SAR ADC modules, each supporting up to 16 analog inputs (32 total with multiplexing), with a maximum sampling rate of 1 Msps per module. Both ADCs support hardware-triggered conversions, window comparison, and calibration - enabling high-fidelity sensor acquisition for battery monitoring, motor control, and climate systems in FS32K148UAT0VLUR applications.