NXP Semiconductors FS32K144ULT0VLHR

Overview

FS32K144ULT0VLHR from NXP Semiconductors is an automotive-grade 32-bit Arm® Cortex-M4F microcontroller with HSRUN mode up to 112 MHz, 2 MB flash (ECC), 256 KB SRAM (ECC), and integrated CSEc security engine. It supports CAN-FD, LPUART/LIN, LPSPI, LPI2C, FlexIO, and dual 12-bit ADCs (1 Msps), targeting body control modules and gateway ECUs in vehicle networks.

For engineers reviewing the FS32K144ULT0VLHR datasheet, FS32K144ULT0VLHR pinout, FS32K144ULT0VLHR application, or FS32K144ULT0VLHR equivalent, key selection considerations include its -40 °C to 105 °C ambient rating (V-grade), 144-pin LQFP package, HSRUN/RUN power mode switching requirement for CSEc/EEPROM operations, and ASIL-B capable safety architecture per ISO 26262.

Technical Context

The FS32K144ULT0VLHR implements a dual-core-capable architecture with Arm Cortex-M4F core (112 MHz HSRUN / 80 MHz RUN), integrated FPU, DSP extensions, and configurable NVIC. Its memory subsystem includes ECC-protected 2 MB flash, 256 KB SRAM, 64 KB FlexNVM for EEPROM emulation, and 4 KB FlexRAM.

Power management uses PMC with five modes (HSRUN, RUN, STOP, VLPR, VLPS); CSEc cryptographic operations and FlexNVM writes require explicit transition from HSRUN to RUN mode (80 MHz). Clocking integrates SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), LPO (128 kHz), and RTC_CLKIN (32 kHz).

Key Specifications

Pinout & Package

FS32K144ULT0VLHR is housed in a 144-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the S32K144-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 FS32K144ULT0VLHR, S32K146HFT0VLHR offers more SRAM and CAN channels but omits Ethernet, while FS32K144HFT0VLHR trades HSRUN-mode headroom for simplified thermal design and lower EMI - both retain pin compatibility and safety features for drop-in reuse in existing layouts.

Availability

FS32K144ULT0VLHR is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, and electric power steering support systems requiring stable component supply across extended production lifecycles.

Supply support for FS32K144ULT0VLHR 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 qualification.

The S32K1xx family was designed specifically for automotive electronic control units requiring ASIL-B compliance, robust security, and mixed-signal integration - FS32K144ULT0VLHR exemplifies this with its HSRUN-optimized Cortex-M4F core and CSEc engine.

FAQ

What is the maximum operating frequency of the FS32K144ULT0VLHR, and under what conditions is it guaranteed?

The FS32K144ULT0VLHR operates at up to 112 MHz in HSRUN mode, guaranteed across -40 °C to 105 °C ambient temperature with 2.7 V to 5.5 V supply. This frequency is only valid in HSRUN mode; CSEc or FlexNVM write/erase operations require switching to RUN mode (80 MHz), as confirmed in the S32K1xx Data Sheet Rev. 15 Section 1.1 and Figure 3.

Does the FS32K144ULT0VLHR support CAN-FD, and how many CAN interfaces does it include?

Yes, the FS32K144ULT0VLHR includes three FlexCAN modules, each supporting optional CAN-FD per ISO 11898-1. The S32K1xx Data Sheet Rev. 15 Section 1.1 and Feature Comparison Table (Figure 3) confirm CAN-FD capability on all three modules, enabling high-speed diagnostics and firmware updates at up to 5 Mbps.

What safety certifications and hardware safety features does the FS32K144ULT0VLHR provide?

The FS32K144ULT0VLHR is designed to support ISO 26262 ASIL-B systems, featuring ECC on flash and SRAM, System MPU, CRC module, dual watchdogs (WDOG and EWM), and lockstep-ready peripherals. These are documented in Sections 1.1 (Safety and Security) and 3.1 (Feature Comparison) of the S32K1xx Data Sheet Rev. 15.

How does the FS32K144ULT0VLHR manage power modes, and why must CSEc operations occur in RUN mode?

The FS32K144ULT0VLHR implements five power modes (HSRUN, RUN, STOP, VLPR, VLPS) via its Power Management Controller. CSEc cryptographic operations and FlexNVM writes trigger error flags in HSRUN mode (112 MHz) and require explicit transition to RUN mode (80 MHz), as stated in multiple footnotes throughout the S32K1xx Data Sheet Rev. 15 (e.g., Section 1.1, Figures 1–4).

What package type and pin count does the FS32K144ULT0VLHR use, and is it pin-compatible with other S32K14x devices?

The FS32K144ULT0VLHR uses a 144-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch). Per the S32K1xx Data Sheet Rev. 15 Section 3.1, all S32K14x devices sharing the same package (e.g., 144-pin LQFP) are pin-to-pin compatible, enabling scalable design reuse across memory/peripheral variants like S32K146 and S32K148.