NXP Semiconductors FS32K148UJT0VLLT

Overview

FS32K148UJT0VLLT 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 (up to 32 channels), three FlexCAN modules (CAN-FD capable), Ethernet MAC (10/100 Mbps with IEEE 1588), and SAI for audio applications - deployed in vehicle body control modules requiring ASIL-B compliance.

For engineers reviewing the FS32K148UJT0VLLT datasheet, FS32K148UJT0VLLT pinout, FS32K148UJT0VLLT application, or FS32K148UJT0VLLT equivalent, key selection considerations include its V-grade (-40°C to +105°C) thermal rating, 100-pin LQFP package, CAN-FD + Ethernet + Security coexistence, and mandatory mode-switching (HSRUN → RUN) for CSEc/EEPROM operations.

Technical Context

The FS32K148UJT0VLLT implements a dual-core execution environment (Cortex-M4F primary + optional M0+ assist), with clock tree supporting up to 112 MHz via SPLL while maintaining deterministic real-time response through dedicated low-power timers (LPIT, LPTMR) and programmable delay blocks (PDB). Its memory subsystem integrates ECC-protected flash/SRAM, FlexNVM for EEPROM emulation, and QuadSPI with HyperBus™ support - though HyperBus™ is explicitly excluded in the 100-pin LQFP variant per datasheet footnote.

Power management includes five distinct modes (HSRUN, RUN, STOP, VLPR, VLPS), with HSRUN enabling peak performance at 112 MHz but disabling CSEc and EEPROM writes - requiring explicit transition to RUN mode (80 MHz) for secure operations. Safety architecture incorporates System MPU (crossbar-level memory protection), CRC module, WDOG/EWM, and ISO 26262 ASIL-B capability.

Key Specifications

Pinout & Package

FS32K148UJT0VLLT is housed in a 100-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, thermally enhanced for automotive PCB layouts. Pin assignment follows NXP's standardized S32K14x pinout matrix; all I/Os support interrupt capability and configurable pull-up/down.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K146UJT0VLLT, the FS32K148UJT0VLLT adds Ethernet and SAI for domain controller roles, while FS32K148UJT0MLLT trades HSRUN security flexibility for wider temperature tolerance - making the V-grade FS32K148UJT0VLLT optimal for body/gateway applications needing full feature set within standard automotive ambient limits.

Availability

FS32K148UJT0VLLT is available at Aetrix Electronics and suitable for automotive body control modules, domain gateways, ADAS sensor hubs, and electric power steering systems requiring stable component supply across long production lifecycles.

Supply support for FS32K148UJT0VLLT 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 leader in automotive semiconductors, delivering secure, scalable, and ASIL-certified MCUs for next-generation vehicle architectures.

The S32K1xx family - including FS32K148UJT0VLLT - was designed specifically for automotive body, gateway, and ADAS domain controllers, emphasizing functional safety (ISO 26262), security (SHE/CSEc), and heterogeneous connectivity (CAN-FD, Ethernet, LIN, FlexIO).

FAQ

What is the maximum operating frequency of the FS32K148UJT0VLLT, and under what conditions?

The FS32K148UJT0VLLT operates at up to 112 MHz in HSRUN mode, but only when voltage is ≥2.97 V and ambient temperature remains within -40°C to +105°C. At 112 MHz, CSEc cryptographic operations and EEPROM writes are prohibited; the device must switch to RUN mode (80 MHz) to execute those functions safely and reliably.

Does the FS32K148UJT0VLLT support CAN-FD, and how many instances are available?

Yes, the FS32K148UJT0VLLT integrates three independent FlexCAN modules, each supporting CAN-FD protocol with bit-rate switching up to 5 Mbps. All three CAN instances are fully functional in the 100-pin LQFP package and can operate concurrently with Ethernet and SAI interfaces without resource conflict.

What memory protection mechanisms does the FS32K148UJT0VLLT implement for functional safety?

The FS32K148UJT0VLLT implements a system-level Memory Protection Unit (MPU) at the crossbar switch, enforcing access rights per master (CPU, DMA, Ethernet). It also includes ECC on 2 MB flash and 256 KB SRAM, CRC acceleration, internal WDOG, and external EWM - collectively supporting ISO 26262 ASIL-B compliance in safety-critical applications.

Is HyperBus™ supported on the FS32K148UJT0VLLT in its 100-pin LQFP package?

No, HyperBus™ protocol support is explicitly excluded for the FS32K148UJT0VLLT in the 100-pin LQFP package, as confirmed in the S32K1xx Data Sheet footnote. The QuadSPI peripheral remains functional but operates only in standard SPI or Xccel modes - not HyperBus™ - limiting external memory bandwidth and addressing capability.

How does the FS32K148UJT0VLLT handle secure boot and cryptographic operations?

The FS32K148UJT0VLLT uses its integrated Cryptographic Services Engine (CSEc) to perform secure boot validation, AES-128/256 encryption, SHA-256 hashing, and true random number generation - all in hardware per SHE specification. These operations require the device to be in RUN mode (80 MHz); attempting them in HSRUN mode triggers error flags and halts execution until mode transition occurs.