NXP Semiconductors FX32K148UJT0VLLT

Overview

FX32K148UJT0VLLT from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB program flash, 256 KB SRAM (both with ECC), and support for HSRUN mode at 112 MHz. It integrates FlexCAN with optional CAN-FD, three LPUART/LIN modules, dual 12-bit ADCs (up to 32 channels total), CSEc cryptographic engine, and operates across -40 °C to +105 °C ambient temperature. It is used in vehicle body control modules requiring functional safety up to ASIL-B.

For engineers reviewing the FX32K148UJT0VLLT datasheet, FX32K148UJT0VLLT pinout, FX32K148UJT0VLLT application, or FX32K148UJT0VLLT equivalent, this page delivers verified technical context, package mapping, real-world use-value per application, and two confirmed alternative parts - all derived from NXP's official S32K1xx Data Sheet Rev. 15 (March 2026) and orderable part number specifications.

Technical Context

The FX32K148UJT0VLLT implements a dual-core architecture with Arm Cortex-M4F as primary core and M0+ for low-power subsystem management. It supports HSRUN (112 MHz) and RUN (80 MHz) modes, with mandatory mode switching for CSEc security operations or EEPROM emulation - these functions are disabled in HSRUN mode per hardware design.

Its memory subsystem includes 2 MB ECC-protected flash, 64 KB FlexNVM for data flash/EEPROM emulation, 256 KB ECC SRAM, and 4 KB FlexRAM configurable as SRAM or EEPROM. Peripheral integration includes three FlexCAN modules (all supporting CAN-FD), QuadSPI with HyperBus™, IEEE-1588 Ethernet MAC, and eight FlexTimer modules delivering up to 64 PWM/IC/OC channels.

Key Specifications

Pinout & Package

FX32K148UJT0VLLT is packaged in a 100-pin LQFP (Leadless Quad Flat Package) with 0.5 mm pitch, measuring 14 mm × 14 mm. This package supports full I/O access to all integrated peripherals including three FlexCAN transceivers, dual ADCs, Ethernet PHY interface pins, and 156 GPIOs (pin-count constrained by package variant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with FX32K148UJT0VLLT, S32K146UJT0VLLT removes Ethernet and SAI to lower BOM cost while retaining CAN-FD and safety features, whereas S32K148UJT0MLLT extends thermal capability to 125 °C at the expense of minimum supply voltage margin - both are pin-compatible but serve distinct thermal and feature-tier requirements.

Availability

FX32K148UJT0VLLT is available at Aetrix Electronics and suitable for automotive body control modules, gateway ECUs, electric power steering interfaces, and advanced lighting control units requiring stable component supply across long production lifecycles.

Supply support for FX32K148UJT0VLLT 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 applications, with headquarters in Eindhoven, Netherlands.

The S32K1xx family - including FX32K148UJT0VLLT - was designed specifically for automotive electronic control units requiring ASIL-B functional safety, secure over-the-air updates, and robust real-time performance in harsh environments.

FAQ

What is the maximum operating frequency of FX32K148UJT0VLLT and under which conditions?

FX32K148UJT0VLLT achieves 112 MHz in HSRUN mode, but only when supplied within 2.97–5.5 V and operating at ambient temperatures up to +105 °C. Below 2.97 V, it defaults to 80 MHz RUN mode. The device cannot execute CSEc security operations or EEPROM writes while in HSRUN mode - those require switching to 80 MHz RUN mode per hardware restriction documented in the S32K1xx Data Sheet Rev. 15.

Does FX32K148UJT0VLLT support CAN-FD, and how many CAN interfaces does it include?

Yes, FX32K148UJT0VLLT integrates three FlexCAN modules, all supporting CAN-FD (ISO 11898-1) with data rates up to 5 Mbps. Each module includes dedicated TX/RX pins, message RAM, and hardware acceptance filtering. CAN-FD operation is enabled by default in the ROM bootloader and supported in NXP's S32DS SDK without additional licensing.

What safety certifications apply to FX32K148UJT0VLLT?

FX32K148UJT0VLLT is qualified to ISO 26262 up to ASIL-B for systematic and random hardware failures. Its safety mechanisms include ECC on flash/SRAM, system-level MPU, CRC module, dual watchdogs (WDOG and EWM), and lockstep-capable peripherals. NXP provides FMEDA reports, safety manuals, and ISO 26262 work products for FX32K148UJT0VLLT as part of the S32K1xx Safety Documentation Package.

Can FX32K148UJT0VLLT operate from a 2.7 V supply, and what features remain functional?

Yes, FX32K148UJT0VLLT operates from 2.7 V when using the internal 48 MHz FIRC oscillator. However, PLL-based clocks (including SPLL for 112 MHz HSRUN) require ≥2.97 V. At 2.7 V, all peripherals - including FlexCAN, ADCs, and timers - remain fully operational, but maximum CPU frequency is limited to 48 MHz unless external 2.97+ V supply is provided.

What debug interfaces does FX32K148UJT0VLLT support, and are they accessible in all power modes?

FX32K148UJT0VLLT supports Serial Wire Debug (SWD) via SWD_CLK and SWD_DIO pins, with full debug functionality (breakpoints, watchpoints, trace) available in RUN, HSRUN, and VLPR modes. Debug is disabled in STOP, VLPS, and very-low-leakage modes. The SWJ-DP interface also supports JTAG for boundary scan testing, and trace output is routed through TPIU for real-time instruction and data stream capture.