NXP Semiconductors FS32K144UAT0VLFR

Overview

FS32K144UAT0VLFR 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, and integrated CSEc security engine. It features dual 12-bit ADCs (32-channel total), three FlexCAN modules (CAN-FD capable), and operates from -40 °C to 105 °C in 144-pin LQFP packaging - deployed in vehicle body control modules requiring functional safety up to ASIL-B.

For engineers reviewing the FS32K144UAT0VLFR datasheet, FS32K144UAT0VLFR pinout, FS32K144UAT0VLFR application, or FS32K144UAT0VLFR equivalent, key selection considerations include HSRUN/RUN mode switching constraints for CSEc/EEPROM operations, 144-pin LQFP package compatibility, CAN-FD interface configuration, FlexTimer channel count (64 total), and voltage range (2.7–5.5 V) compliance in automotive power domains.

Technical Context

The FS32K144UAT0VLFR implements a dual-core execution environment with Arm Cortex-M4F (primary) and M0+ (co-processor) supporting concurrent real-time control and safety monitoring. Its AXBS-Lite crossbar switch enables deterministic peripheral arbitration across eDMA, FlexCAN, and ADC subsystems, while NXP's system MPU enforces memory protection at the bus level - distinct from Arm Core MPU - enabling ASIL-B partitioning without core-level MPU hardware.

Power management integrates five modes (HSRUN, RUN, STOP, VLPR, VLPS) with automatic clock gating per peripheral domain. Critical safety-critical operations - including CSEc cryptographic execution and EEPROM emulation - are restricted to RUN mode (80 MHz), requiring explicit software-triggered mode transition from HSRUN (112 MHz), as enforced by hardware error flag generation on violation.

Key Specifications

Pinout & Package

FS32K144UAT0VLFR is housed in a 144-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, 20 × 20 mm body size, and exposed thermal pad. This package supports full I/O availability (up to 156 GPIOs) and meets AEC-Q100 Grade 2 requirements for automotive reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K144UAT0VLFR, S32K144HAT0VLFR trades peak performance for reduced power and thermal load, while S32K146UAT0VLFR extends connectivity with Ethernet and audio - both retain pin-to-pin compatibility and identical safety/security architecture but differ in clock capability and peripheral set.

Availability

FS32K144UAT0VLFR is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering systems, ADAS sensor hubs, and vehicle gateway modules requiring stable component supply across extended production lifecycles.

Supply support for FS32K144UAT0VLFR 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The S32K1xx family is designed specifically for automotive electronic control units (ECUs) demanding functional safety (ASIL-B), security (SHE/CSEc), and real-time performance - targeting body, chassis, and gateway applications with rigorous AEC-Q100 qualification.

FAQ

What is the maximum operating frequency of the FS32K144UAT0VLFR and under which conditions?

The FS32K144UAT0VLFR achieves 112 MHz in HSRUN mode, validated across -40 °C to +105 °C ambient temperature. This frequency requires VDD ≥ 2.7 V and disables CSEc execution and EEPROM writes - those operations must occur in RUN mode (80 MHz). The device automatically asserts error flags if security or flash commands are issued during HSRUN, requiring explicit software mode transition.

Does the FS32K144UAT0VLFR support CAN-FD, and how many instances are available?

Yes, the FS32K144UAT0VLFR integrates three independent FlexCAN modules, all supporting CAN-FD (ISO 11898-1) with data phase bit rates up to 5 Mbps. Each module includes dedicated message buffers, acceptance filtering, and hardware timestamping - enabling concurrent communication across powertrain, chassis, and body domains without CPU intervention.

How does the FS32K144UAT0VLFR implement functional safety for ASIL-B compliance?

The FS32K144UAT0VLFR achieves ASIL-B readiness through hardware-enforced mechanisms: NXP's system MPU restricts memory access per bus master (Core, DMA, Ethernet), ECC protects 2 MB flash and 256 KB SRAM, dual watchdogs (WDOG + EWM) provide redundant timeout supervision, and CRC modules verify memory contents. These features are documented in the S32K1xx Functional Safety Manual and certified per ISO 26262.

What package type and pin count does the FS32K144UAT0VLFR use, and is it pin-compatible with other S32K1xx devices?

The FS32K144UAT0VLFR uses a 144-pin LQFP package with 0.5 mm pitch and 20 × 20 mm body. All S32K1xx devices sharing the same package (e.g., S32K144HAT0VLFR, S32K146UAT0VLFR) are pin-to-pin compatible - enabling hardware reuse across performance and feature variants without PCB redesign.

Can the FS32K144UAT0VLFR execute cryptographic operations while running at 112 MHz?

No. The FS32K144UAT0VLFR prohibits CSEc (Cryptographic Services Engine) execution in HSRUN mode (112 MHz). Attempting security operations triggers hardware error flags. To run AES, SHA, or ECDSA functions, software must first transition to RUN mode (80 MHz) using the PMC module - a mandatory design requirement confirmed in the S32K1xx Data Sheet Rev. 15, Section 1.1 and Figure 3 footnotes.