NXP Semiconductors FS32K144UAT0VLHR

Overview

FS32K144UAT0VLHR 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 CSEc security engine, dual 12-bit ADCs (up to 32 channels), three FlexCAN modules (CAN-FD capable), and operates across -40 °C to 105 °C ambient temperature. It is used in body control modules requiring functional safety up to ASIL-B.

For engineers reviewing the FS32K144UAT0VLHR datasheet, FS32K144UAT0VLHR pinout, FS32K144UAT0VLHR application, or FS32K144UAT0VLHR equivalent, key selection considerations include its 144-pin LQFP package, HSRUN/RUN power mode switching requirement for CSEc/EEPROM operations, CAN-FD interface count, FlexIO protocol emulation capability, and ISO 26262-compliant safety features.

Technical Context

The FS32K144UAT0VLHR implements a dual-core-capable architecture with Arm Cortex-M4F core (112 MHz HSRUN, 80 MHz RUN) and optional M0+ co-processor support via software configuration. Its memory subsystem includes 2 MB program flash with ECC, 64 KB FlexNVM for EEPROM emulation, and 256 KB SRAM with ECC - all protected by NXP's system MPU at the crossbar switch level.

Peripheral integration centers on automotive real-time requirements: three FlexCAN modules (all CAN-FD enabled), eight FlexTimer modules (64 PWM/IC/OC channels), LPIT/LPTMR timers, and low-power communication interfaces (LPUART, LPSPI, LPI2C) with DMA support. Clocking relies on SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with RTC_CLKIN input for 32.768 kHz timing.

Key Specifications

Pinout & Package

FS32K144UAT0VLHR is housed in a 144-pin LQFP package (16 mm × 16 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per I/O signal multiplexing in the S32K1xx Reference Manual; pin assignments vary by peripheral enablement and configuration registers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K144UAT0VLHR, the S32K144UAT0VLHT provides identical functionality in tray packaging, while the S32K146UAT0VLHR extends memory and peripheral count - making it appropriate for higher-tier gateway or domain controller roles where scalability matters more than BOM cost optimization.

Availability

FS32K144UAT0VLHR is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering units, and vehicle gateway systems requiring stable component supply across extended product lifecycles.

Supply support for FS32K144UAT0VLHR 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 applications.

The S32K1xx family is designed specifically for automotive electronic control units requiring ASIL-B functional safety compliance, robust security (CSEc), and real-time performance in harsh environments.

FAQ

What is the maximum operating frequency of the FS32K144UAT0VLHR, and under what conditions?

The FS32K144UAT0VLHR achieves a maximum operating frequency of 112 MHz in HSRUN mode. However, this mode prohibits execution of CSEc cryptographic operations or FlexNVM EEPROM writes/erases - those functions require switching to RUN mode at 80 MHz. The device automatically manages mode transitions via PMC registers, and clock tree configuration must align with voltage and temperature constraints specified in the datasheet.

Does the FS32K144UAT0VLHR support CAN-FD, and how many instances are available?

Yes, the FS32K144UAT0VLHR integrates three fully independent FlexCAN modules, all supporting CAN-FD per ISO 11898-1 with data rates up to 5 Mbps. Each module includes dedicated message RAM, acceptance filtering, and loopback/self-test capabilities. Pin assignment depends on the 144-pin LQFP package layout and I/O multiplexing configuration in the reference manual.

What safety certifications apply to the FS32K144UAT0VLHR?

The FS32K144UAT0VLHR is qualified to ISO 26262 up to ASIL-B for systematic and random hardware failures. It includes integrated safety mechanisms such as ECC on flash and SRAM, system MPU for memory access control, CRC acceleration, dual watchdogs (WDOG and EWM), and lockstep-capable peripherals. These features are documented in the S32K1xx Functional Safety Manual and certified by third-party assessment bodies.

How does the CSEc security engine function on the FS32K144UAT0VLHR?

The CSEc (Cryptographic Services Engine) on the FS32K144UAT0VLHR implements SHE-compliant functions including AES-128/256 encryption/decryption, SHA-256 hashing, true random number generation, and secure boot verification. It operates exclusively in RUN mode (80 MHz); attempting CSEc commands in HSRUN mode triggers error flags. Key storage uses internal fuses and volatile key registers protected by access control policies.

What is the purpose of FlexRAM in the FS32K144UAT0VLHR, and how is it configured?

FlexRAM in the FS32K144UAT0VLHR provides 4 KB of configurable memory that can be allocated as general-purpose SRAM or used for EEPROM emulation via the FlexNVM driver. Configuration is performed at runtime through FTFC command registers and persists across resets. When used for EEPROM emulation, it supports byte-level writes and wear leveling - critical for storing calibration data or configuration parameters in automotive ECUs.