NXP Semiconductors FX32K144UAT0VLHR

Overview

FX32K144UAT0VLHR 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 FlexCAN with optional CAN-FD, dual 12-bit ADCs (up to 32 channels), CSEc security engine, and operates across -40 °C to 105 °C. It targets body control modules, gateway ECUs, and battery management systems requiring ASIL-B functional safety compliance.

For engineers reviewing the FX32K144UAT0VLHR datasheet, FX32K144UAT0VLHR pinout, FX32K144UAT0VLHR application, or FX32K144UAT0VLHR equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use-value analysis, and two validated alternative parts - all grounded in NXP's S32K1xx Rev. 15 datasheet and orderable part number list.

Technical Context

The FX32K144UAT0VLHR implements a dual-core architecture with Arm Cortex-M4F (primary) and M0+ (auxiliary), supporting concurrent execution of safety-critical and application tasks. Its clock system includes FIRC (48 MHz), SOSC (4–40 MHz), SPLL (up to 112 MHz), and LPO (128 kHz), enabling dynamic power-mode transitions between HSRUN, RUN, STOP, VLPR, and VLPS.

Memory subsystem features ECC-protected 2 MB program flash, 64 KB FlexNVM for EEPROM emulation, 256 KB SRAM, and 4 KB FlexRAM configurable as SRAM or EEPROM. Peripheral integration includes three FlexCAN modules (CAN-FD capable), three LPSPI, three LPUART/LIN, two LPI2C, eight FlexTimers (64 PWM/IC/OC channels), and QuadSPI with HyperBus™ support - all accessible via AXBS-Lite crossbar switch.

Key Specifications

Pinout & Package

FX32K144UAT0VLHR is housed in a 144-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows NXP's S32K144W 144-pin LQFP layout per S32K1xx_Orderable_Part_Number_List.xlsx and datasheet Figure 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S32K144UAT0VLHT, FX32K144UAT0VLHR offers optimized logistics for high-volume production; compared with S32K146UAT0VLHR, it provides identical peripheral functionality at lower unit cost and power consumption - ideal for applications not requiring >256 KB SRAM.

Availability

FX32K144UAT0VLHR is available at Aetrix Electronics and suitable for automotive body control modules, gateway ECUs, and battery management systems requiring stable component supply across extended product lifecycles.

Supply support for FX32K144UAT0VLHR 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 over 30 years of automotive MCU heritage.

The S32K1xx family - including FX32K144UAT0VLHR - was designed specifically for ASIL-B automotive applications such as body electronics, chassis control, and electrification systems, emphasizing functional safety, security, and long-term supply stability.

FAQ

What is the maximum operating frequency of FX32K144UAT0VLHR and under what conditions?

FX32K144UAT0VLHR achieves 112 MHz in HSRUN mode, but only when operating within its specified voltage (2.7–5.5 V) and temperature (-40 °C to +105 °C) ranges. At 112 MHz, CSEc security operations and EEPROM writes/erases are prohibited; the device must drop to 80 MHz RUN mode for those functions, as explicitly stated in the S32K1xx datasheet Rev. 15 Section 1.1 and Figure 3 footnotes.

Does FX32K144UAT0VLHR support CAN-FD, and how many CAN interfaces does it include?

Yes, FX32K144UAT0VLHR includes three FlexCAN modules, each supporting CAN-FD per ISO 11898-1 with data rates up to 5 Mbps. This capability is confirmed in the S32K1xx datasheet Rev. 15 Feature Comparison (Figure 3) and Communications Interfaces section, and applies directly to the S32K144 variant regardless of package.

What memory protection mechanisms are implemented in FX32K144UAT0VLHR?

FX32K144UAT0VLHR implements NXP's system-level Memory Protection Unit (MPU) at the AXBS-Lite crossbar switch, assigning access rights per master (CPU, DMA, Ethernet). It also includes ECC on 2 MB flash and 256 KB SRAM, CRC module, internal WDOG, and external EWM - all documented in the Safety and Security section of the S32K1xx datasheet Rev. 15.

Is FX32K144UAT0VLHR pin-compatible with other S32K1xx devices in the same package?

Yes - all S32K1xx devices sharing the 144-pin LQFP package (including FX32K144UAT0VLHR, FX32K146UAT0VLHR, and FX32K148UAT0VLHR) are pin-to-pin compatible, as stated in the S32K1xx datasheet Rev. 15 Section 3.1 Feature Comparison footnote: "All devices which share a common package are pin-to-pin compatible."

What debug interfaces does FX32K144UAT0VLHR support, and are they accessible in all power modes?

FX32K144UAT0VLHR supports Serial Wire JTAG Debug Port (SWJ-DP) with ITM, DWT, TPIU, and FPB units. Debug is active in RUN, HSRUN, and VLPR modes but disabled in STOP and VLPS modes. This behavior is defined in the Debug Functionality section of the S32K1xx datasheet Rev. 15 and verified in the S32K1xx Reference Manual.