NXP Semiconductors FS32K148HRT0VLQT

Overview

FS32K148HRT0VLQT from NXP Semiconductors is an automotive-grade 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 processing - deployed in vehicle body control modules requiring functional safety up to ASIL-B.

For engineers reviewing the FS32K148HRT0VLQT datasheet, FS32K148HRT0VLQT pinout, FS32K148HRT0VLQT application, or FS32K148HRT0VLQT equivalent, this page delivers verified specifications, package mapping (100-pin LQFP), validated pin functions, safety-critical power mode behavior (HSRUN/RUN mode switching for CSEc), and real-world automotive use context - eliminating cross-reference ambiguity.

Technical Context

The FS32K148HRT0VLQT implements a dual-core architecture with Arm Cortex-M4F (primary) and Cortex-M0+ (auxiliary) execution units, sharing AXBS-Lite crossbar and eDMA resources. Its clock system integrates SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with configurable gating per peripheral domain.

Memory subsystem includes ECC-protected 2 MB program flash, 64 KB FlexNVM (EEPROM emulation), 256 KB SRAM, and 4 KB FlexRAM - all managed by NXP's system MPU (not Arm Core MPU), enforcing access rights at crossbar level for DMA, core, and Ethernet masters independently.

Key Specifications

Pinout & Package

FS32K148HRT0VLQT is housed in a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow NXP's standardized S32K14x I/O multiplexing scheme, supporting flexible peripheral routing via TRGMUX and IO PORT controllers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K148HRT0VLQT, S32K146HRT0VLQT reduces memory and connectivity for cost-sensitive body nodes, while S32K148HRT0MLQT trades ambient rating for broader thermal deployment - neither offers drop-in replacement without verifying thermal derating and feature enablement in software.

Availability

FS32K148HRT0VLQT is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, electric power steering systems, and battery management monitors requiring stable component supply across long production lifecycles.

Supply support for FS32K148HRT0VLQT 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 FS32K148HRT0VLQT - was designed specifically for ASIL-B automotive applications such as body electronics, chassis control, and domain gateways, integrating safety mechanisms, security engines, and robust communication peripherals from the silicon level.

FAQ

What is the maximum operating frequency of the FS32K148HRT0VLQT and under what conditions?

The FS32K148HRT0VLQT achieves 112 MHz in HSRUN mode, but only when powered at ≥2.97 V and operating within its -40 °C to +105 °C ambient range. At lower supply voltages or elevated temperatures, it must operate in RUN mode at 80 MHz. This distinction directly impacts real-time performance in CAN-FD and Ethernet applications - FS32K148HRT0VLQT users must validate voltage ramp and thermal design accordingly.

Does the FS32K148HRT0VLQT support CAN-FD, and how many instances are available?

Yes, the FS32K148HRT0VLQT integrates three independent FlexCAN modules, all supporting CAN-FD (ISO 11898-1) with data rates up to 5 Mbps and payloads up to 64 bytes. Each module has dedicated message buffers and hardware filtering - enabling concurrent high-speed communication across powertrain, chassis, and infotainment domains without CPU overhead. This capability is confirmed in the S32K1xx Data Sheet Rev. 15 feature comparison table.

How does the CSEc security engine function in the FS32K148HRT0VLQT, and what are its operational constraints?

The FS32K148HRT0VLQT includes a Cryptographic Services Engine (CSEc) compliant with the SHE specification, supporting AES, SHA, ECDSA, and secure key storage. However, CSEc operations - along with EEPROM writes/erases - are prohibited in HSRUN mode (112 MHz) and trigger error flags. The device must switch to RUN mode (80 MHz) to execute these functions. This constraint is explicitly documented in the S32K1xx Data Sheet Rev. 15, Section 1.1 and Figure 3 footnotes.

What package type and pin count does the FS32K148HRT0VLQT use, and is it pin-compatible with other S32K14x variants?

The FS32K148HRT0VLQT uses a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad. Per the S32K1xx Data Sheet Rev. 15, Section 3.1, all S32K14x devices sharing the same package (e.g., 100-pin LQFP) are pin-to-pin compatible - enabling hardware reuse across memory and feature variants like S32K146HRT0VLQT. Pin functions are defined in the IO Signal Description sheet of the Reference Manual.

What is the role of the system MPU in the FS32K148HRT0VLQT, and how does it differ from the Arm Core MPU?

The FS32K148HRT0VLQT implements NXP's system MPU - not the Arm Core MPU - which enforces memory protection at the AXBS-Lite crossbar level. It assigns independent access rights (read/write/execute) to each protected region for all masters (CPU, DMA, Ethernet). Unlike the Arm Core MPU (absent in this device), the system MPU protects against unauthorized access by any bus master, making it essential for ASIL-B compliance. This architecture is detailed in Figures 1–2 and footnote 1 of the S32K1xx Data Sheet Rev. 15.