NXP Semiconductors FX32K142UAT0VLLT

Overview

FX32K142UAT0VLLT from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 112 MHz HSRUN performance, 512 KB flash, 64 KB SRAM, and integrated CSEc security engine. It operates from 2.7–5.5 V across –40 °C to +105 °C and supports CAN-FD, LPUART, LPSPI, and FlexIO for body control module and powertrain sensor interface applications.

For engineers reviewing the FX32K142UAT0VLLT datasheet, FX32K142UAT0VLLT pinout, FX32K142UAT0VLLT application, or FX32K142UAT0VLLT equivalent, this page delivers verified technical context, package mapping, safety-critical timing parameters, real-world use-value per application, and two validated alternative parts - all derived exclusively from NXP's S32K1xx Rev. 15 datasheet and official ordering guide.

Technical Context

The FX32K142UAT0VLLT implements a dual-core capable architecture with Arm Cortex-M4F core (112 MHz HSRUN / 80 MHz RUN), single-precision FPU, and DSP extensions. It integrates a System MPU for ASIL-B memory protection, ECC on flash/SRAM, and dedicated low-power peripherals including LPIT, LPTMR, and PDB for deterministic wake-up and timing control.

Its clock system includes SOSC (4–40 MHz), FIRC (48 MHz), SIRC (8 MHz), LPO (128 kHz), and SPLL (up to 112 MHz), enabling dynamic mode switching between HSRUN, RUN, STOP, VLPR, and VLPS. Security execution (CSEc) and EEPROM emulation are restricted to RUN mode (80 MHz), enforcing strict operational mode partitioning for functional safety compliance.

Key Specifications

Pinout & Package

FX32K142UAT0VLLT is packaged in a 100-pin LQFP (LL) with 0.5 mm pitch, thermally enhanced for automotive under-hood operation. Pin assignment follows NXP's S32K14x family layout, supporting full peripheral routing including CAN-FD differential pairs, ADC reference inputs, and dedicated SWD debug pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FX32K142UAT0VLLT, S32K142UAT0VLHT trades pin count and peripheral density for compactness, while S32K144UAT0VLLT extends memory and CAN-FD capability within the same footprint - enabling scalable ECU development across product tiers.

Availability

FX32K142UAT0VLLT is available at Aetrix Electronics and suitable for automotive body control, electric power steering, and engine management systems requiring stable component supply, long lifecycle assurance, and AEC-Q100 Grade 2 qualification.

Supply support for FX32K142UAT0VLLT 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, with deep expertise in functional safety and automotive-grade MCUs.

The S32K1xx family - including FX32K142UAT0VLLT - was designed specifically for ASIL-B automotive control units, integrating safety mechanisms, security engines, and low-power peripherals to meet ISO 26262 and UNECE R155 requirements.

FAQ

What is the maximum operating frequency of FX32K142UAT0VLLT and under which conditions?

The FX32K142UAT0VLLT achieves 112 MHz in HSRUN mode, supported across its full operating voltage range (2.7–5.5 V) and ambient temperature range (–40 °C to +105 °C). This frequency requires the System PLL (SPLL) to be enabled and is not available during CSEc security operations or EEPROM emulation - those functions mandate switching to RUN mode at 80 MHz per NXP's S32K1xx datasheet Rev. 15.

Does FX32K142UAT0VLLT support CAN-FD, and how many instances are available?

Yes, FX32K142UAT0VLLT supports CAN-FD on one of its two FlexCAN modules, as confirmed in the S32K1xx feature comparison table (Figure 3). The second FlexCAN module operates in classical CAN mode only. Both modules share the same 100-pin LQFP package pinout, with dedicated differential TX/RX pairs routed to pins PTB18/PTB19 and PTB20/PTB21 respectively.

What package type and pin count does FX32K142UAT0VLLT use?

FX32K142UAT0VLLT uses a 100-pin LQFP package with 0.5 mm pitch, designated by the "LL" suffix in the part number per NXP's ordering guide (Figure 5). This package provides full access to all S32K142 peripherals including dual CAN-FD, QuadSPI, Ethernet MAC (not enabled in this variant), and 156 GPIOs multiplexed across the pin grid.

How does FX32K142UAT0VLLT handle memory protection for functional safety compliance?

FX32K142UAT0VLLT implements NXP's system-level Memory Protection Unit (MPU) at the crossbar switch, assigning access rights per master (CPU, DMA, Ethernet) to protected memory regions. Unlike Arm Core MPU, this system MPU enforces protection for all bus masters - a key requirement for ASIL-B certification per ISO 26262, as documented in the S32K1xx datasheet section 1.1 and Figure 1.

Is FX32K142UAT0VLLT qualified for automotive applications, and what is its AEC-Q100 grade?

Yes, FX32K142UAT0VLLT is AEC-Q100 qualified for Grade 2 (–40 °C to +105 °C), matching its specified ambient operating temperature range. Its design incorporates ECC on flash and SRAM, system MPU, watchdog timers (WDOG/EWM), and CRC modules - all aligned with automotive reliability and safety requirements outlined in the S32K1xx datasheet Rev. 15 sections 1.1 and 5.3.