NXP Semiconductors FS32K148URT0VLUT

Overview

FS32K148URT0VLUT 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, dual 12-bit ADCs (up to 32 channels each), and triple FlexCAN modules with optional CAN-FD support - deployed in engine control units requiring ASIL-B functional safety compliance.

For engineers reviewing the FS32K148URT0VLUT datasheet, FS32K148URT0VLUT pinout, FS32K148URT0VLUT application, or FS32K148URT0VLUT equivalent, key selection criteria include its -40 °C to +105 °C ambient rating (V-grade), 100-pin LQFP package, CSEc cryptographic engine, QuadSPI/HyperBus™ interface, and mandatory mode-switching (from HSRUN to RUN) for EEPROM/CSEc operations.

Technical Context

The FS32K148URT0VLUT implements a dual-core architecture with Arm Cortex-M4F as primary execution core (112 MHz HSRUN / 80 MHz RUN) and Cortex-M0+ for low-power background tasks. It integrates NXP's system-level Memory Protection Unit (MPU) at the Crossbar Switch, not Arm Core MPU, enforcing access rights per master (Core, DMA, Ethernet) across protected memory regions.

Its clock system includes SOSC (4–40 MHz), FIRC (48 MHz), SIRC (8 MHz), LPO (128 kHz), and SPLL (up to 112 MHz), with dedicated TCLK (20 MHz) and SWD_CLK (25 MHz) domains. Power management supports five modes: HSRUN, RUN, STOP, VLPR, VLPS - where CSEc execution and EEPROM writes are prohibited in HSRUN and require explicit transition to RUN mode.

Key Specifications

Pinout & Package

FS32K148URT0VLUT is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the S32K148-specific IO Signal Description multiplexing table in the Reference Manual.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K148URT0VLUT, S32K146UFT0VLUT reduces memory and connectivity for cost-sensitive ECUs, while S32K148UFT0MLUT trades ambient rating for higher thermal resilience - both retain identical pinout and safety architecture but differ in feature scope and operating envelope.

Availability

FS32K148URT0VLUT is available at Aetrix Electronics and suitable for engine control units, ADAS sensor hubs, electric power steering systems, and vehicle gateway modules requiring stable component supply across automotive production lifecycles.

Supply support for FS32K148URT0VLUT 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 - including FS32K148URT0VLUT - was designed specifically for automotive body, powertrain, and ADAS applications demanding ASIL-B compliance, robust security, and long-term supply stability.

FAQ

What is the maximum operating frequency of the FS32K148URT0VLUT and under what conditions?

The FS32K148URT0VLUT operates at up to 112 MHz in HSRUN mode, guaranteed across -40 °C to +105 °C ambient temperature. This frequency requires VDD ≥ 2.97 V when PLL is engaged; operation below that voltage limits CPU to 48 MHz using FIRC. The device must drop to 80 MHz RUN mode to execute CSEc or EEPROM write/erase commands.

Does the FS32K148URT0VLUT support CAN-FD, and how many instances are available?

Yes, the FS32K148URT0VLUT integrates three independent FlexCAN modules, each configurable for CAN-FD (ISO 11898-1) operation with data rates up to 5 Mbps. All three CAN instances are fully functional in the 100-pin LQFP package, with dedicated TX/RX pins mapped to non-overlapping I/O banks per the S32K148 pinmux documentation.

What memory protection mechanisms does the FS32K148URT0VLUT implement for functional safety?

The FS32K148URT0VLUT implements NXP's system-level Memory Protection Unit (MPU) at the Crossbar Switch, assigning access rights per master (Cortex-M4F, DMA, Ethernet) to protected memory regions. It also includes ECC on 2 MB flash and 256 KB SRAM, CRC module, internal WDOG, and external EWM - collectively enabling ASIL-B compliance per ISO 26262.

Can the FS32K148URT0VLUT execute cryptographic operations while running at 112 MHz?

No. The FS32K148URT0VLUT triggers error flags if CSEc (Cryptographic Services Engine) operations or EEPROM writes/erases are attempted in HSRUN mode (112 MHz). The device must explicitly transition to RUN mode (80 MHz) before initiating any CSEc command or FlexNVM programming sequence - this is a hardware-enforced restriction documented in the S32K1xx Data Sheet Rev. 15.

What is the ADC configuration supported by the FS32K148URT0VLUT?

The FS32K148URT0VLUT integrates two independent 12-bit SAR ADC modules, each supporting up to 32 analog input channels and 1 Msps conversion rate. Both ADCs support hardware-triggered conversions via PDB or FlexTimer, simultaneous sampling, and flexible result alignment - with inputs shared across GPIO functionality and configurable via the TRGMUX peripheral.