NXP Semiconductors FX32K148UJT0VLQT

Overview

FX32K148UJT0VLQT from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB 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), CSEc security 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 FX32K148UJT0VLQT datasheet, FX32K148UJT0VLQT pinout, FX32K148UJT0VLQT application, or FX32K148UJT0VLQT equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use-value per application, and two validated alternative parts - all grounded in NXP's official S32K1xx Rev. 15 datasheet and orderable part number list.

Technical Context

The FX32K148UJT0VLQT implements a dual-core architecture with Arm Cortex-M4F as primary execution core and optional M0+ for low-power background tasks, sharing AXBS-Lite crossbar switch and eDMA controller. Its clock system includes FIRC (48 MHz), SOSC (4–40 MHz), SPLL (up to 112 MHz), and LPO (128 kHz), enabling dynamic power-mode transitions between HSRUN, RUN, STOP, VLPR, and VLPS.

Memory subsystem comprises 2 MB program flash with ECC, 64 KB FlexNVM for EEPROM emulation, 256 KB SRAM with ECC, and 4 KB FlexRAM configurable as SRAM or EEPROM. Safety features include System MPU (crossbar-level memory protection), CRC module, WDOG/EWM watchdogs, and CSEc cryptographic engine compliant with SHE specification - though CSEc operations require switching from HSRUN to RUN mode (80 MHz).

Key Specifications

Pinout & Package

FX32K148UJT0VLQT is packaged in a 100-pin LQFP (14 × 14 mm, 0.5 mm pitch), pin-compatible with other S32K14x devices in the same package variant. This package supports full peripheral availability including all three FlexCAN interfaces, dual ADCs, Ethernet MAC, and SAI modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FX32K148UJT0VLQT, S32K146UJT0VLQT reduces memory and connectivity to lower BOM cost while retaining pin compatibility, whereas S32K148UJT0MLQT maintains identical functionality but shifts to a thermally robust BGA package for harsher environments - neither is drop-in replaceable without layout or thermal validation.

Availability

FX32K148UJT0VLQT 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 FX32K148UJT0VLQT 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 Arm-based MCUs and functional safety certification.

The S32K1xx family - including FX32K148UJT0VLQT - was designed specifically for automotive electronic control units requiring ASIL-B compliance, real-time performance, and integrated security, targeting body, chassis, and domain controller applications.

FAQ

What is the maximum operating frequency of FX32K148UJT0VLQT and under what conditions?

FX32K148UJT0VLQT operates at up to 112 MHz in HSRUN mode, guaranteed across -40 °C to +105 °C ambient temperature and 2.97 V to 5.5 V supply voltage. This frequency requires the System PLL (SPLL) and is not available during CSEc security operations or EEPROM writes, which mandate switching to RUN mode at 80 MHz per NXP's S32K1xx datasheet Rev. 15.

Does FX32K148UJT0VLQT support CAN-FD, and how many interfaces are available?

Yes, FX32K148UJT0VLQT supports CAN-FD on two of its three FlexCAN modules, as confirmed in the S32K1xx feature comparison table (Figure 3). All three FlexCAN modules are present in the 100-pin LQFP package, with CAN-FD capability enabled on CAN0 and CAN1 - enabling high-speed data transfer (up to 5 Mbps) for ADAS and gateway applications.

What memory protection mechanisms does FX32K148UJT0VLQT implement for ASIL-B compliance?

FX32K148UJT0VLQT implements a System MPU at the crossbar switch level - not the Arm Core MPU - allowing independent access rights assignment for each master (Cortex-M4F core, eDMA, Ethernet MAC). Combined with ECC on flash/SRAM, CRC module, WDOG/EWM, and CSEc, this meets ASIL-B requirements per ISO 26262 without requiring external safety monitors.

Can FX32K148UJT0VLQT execute CSEc cryptographic operations while running at 112 MHz?

No. Per NXP's S32K1xx datasheet Rev. 15, CSEc (Security) operations or EEPROM writes/erase will trigger error flags if attempted in HSRUN mode (112 MHz). FX32K148UJT0VLQT must switch to RUN mode (80 MHz) to execute these functions - a hardware-enforced restriction to ensure timing predictability and memory integrity during security-critical sequences.

What is the ADC configuration supported by FX32K148UJT0VLQT, and how many input channels are accessible in the 100-pin LQFP package?

FX32K148UJT0VLQT integrates two independent 12-bit SAR ADC modules, each supporting up to 16 analog input channels for a total of 32. In the 100-pin LQFP package, all 32 channels are accessible via dedicated pins or multiplexed GPIOs, with 1 Msps sample rate per module - enabling simultaneous sampling for motor current sensing or multi-sensor monitoring in automotive ECUs.