NXP Semiconductors FS32K148UJT0VLLR

Overview

FS32K148UJT0VLLR from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB flash, 256 KB SRAM, and integrated CSEc security engine. It operates at up to 112 MHz in HSRUN mode (−40 °C to +105 °C), supports CAN-FD, Ethernet (10/100 Mbps), and IEEE-1588 timing - deployed in vehicle body control modules requiring ASIL-B functional safety compliance.

For engineers reviewing the FS32K148UJT0VLLR datasheet, FS32K148UJT0VLLR pinout, FS32K148UJT0VLLR application, or FS32K148UJT0VLLR equivalent, key selection criteria include its dual-core debug support (SWD/JTAG), FlexCAN with FD capability, QuadSPI/HyperBus™ interface, and mandatory RUN-mode execution for CSEc operations and EEPROM emulation - critical for secure boot and OTA update designs.

Technical Context

The FS32K148UJT0VLLR implements a dual-core debug architecture with Arm Cortex-M4F core (112 MHz HSRUN / 80 MHz RUN) and optional M0+ co-processor support via software configuration. Its memory subsystem includes ECC-protected 2 MB flash, 64 KB FlexNVM for EEPROM emulation, and 4 KB FlexRAM configurable as SRAM or EEPROM backup.

Power management uses five distinct modes (HSRUN, RUN, STOP, VLPR, VLPS) with PMC-controlled clock gating; CSEc cryptographic operations and FlexNVM writes are restricted to RUN mode (80 MHz) due to hardware-enforced isolation - preventing concurrent high-speed execution and secure memory access.

Key Specifications

Pinout & Package

FS32K148UJT0VLLR is housed in a 144-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows S32K14x family standard layout, supporting full peripheral mapping including Ethernet RMII, CAN-FD transceivers, and dual ADC inputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K148UJT0VLLR, S32K146UJT0VLLR reduces memory and peripheral count for cost-sensitive BCMs, while S32K148UJT0MLLR trades peak frequency for extended thermal range - both retain identical security, safety, and CAN-FD capabilities.

Availability

FS32K148UJT0VLLR is available at Aetrix Electronics and suitable for automotive body control, electric power steering, and gateway applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 qualification.

Supply support for FS32K148UJT0VLLR 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 MCUs.

The S32K1xx family targets automotive electronic control units requiring ASIL-B compliance, featuring integrated safety mechanisms, CSEc security, and scalable memory/peripheral sets - designed specifically for body, chassis, and gateway applications.

FAQ

What is the maximum operating frequency of the FS32K148UJT0VLLR and under what conditions?

The FS32K148UJT0VLLR achieves 112 MHz in HSRUN mode at −40 °C to +105 °C ambient, but only when voltage ≥2.97 V and PLL is engaged. In RUN mode, it operates at up to 80 MHz across the full temperature range and supports CSEc and FlexNVM operations - a hardware-enforced restriction to ensure memory integrity during secure writes.

Does the FS32K148UJT0VLLR support IEEE-1588 Precision Time Protocol?

Yes, the FS32K148UJT0VLLR integrates a 10/100 Mbps Ethernet MAC with full IEEE-1588 hardware timestamping capability, including PTP event message capture, correction field processing, and fine-grained clock adjustment - essential for time-synchronized multi-node vehicle networks.

Can CSEc cryptographic functions be executed while the FS32K148UJT0VLLR runs at 112 MHz?

No. The FS32K148UJT0VLLR triggers error flags if CSEc operations or FlexNVM writes/erases are attempted in HSRUN mode (112 MHz). The device must switch to RUN mode (80 MHz) to execute these functions - a hardware-level safety mechanism documented in the S32K1xx Data Sheet Rev. 15.

What package type and pin count does the FS32K148UJT0VLLR use?

The FS32K148UJT0VLLR uses a 144-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. This package supports full peripheral routing including Ethernet RMII, three FlexCAN interfaces, dual ADC banks, and 156 GPIOs - matching the pinout of other S32K14x devices in the same footprint.

Is the FS32K148UJT0VLLR qualified for automotive applications?

Yes, the FS32K148UJT0VLLR is AEC-Q100 Grade 2 qualified (−40 °C to +105 °C), features ASIL-B ready architecture with ECC, system MPU, CRC, and dual watchdogs (WDOG/EWM), and is designed for automotive body control, gateway, and chassis applications per ISO 26262 requirements.