NXP Semiconductors FS32K142HAT0MLLR

Overview

FS32K142HAT0MLLR from NXP Semiconductors is an automotive-grade 32-bit Arm® Cortex-M4F microcontroller designed for real-time control in safety-critical ECUs. It operates at up to 80 MHz in RUN mode, features 256 KB flash with ECC, 256 KB SRAM with ECC, and supports -40 °C to +125 °C ambient operation in a 100-pin LQFP package. It integrates FlexCAN (with CAN-FD), LPUART/LIN, LPSPI, LPI2C, and CSEc security engine - deployed in body control modules and chassis domain controllers.

For engineers reviewing the FS32K142HAT0MLLR datasheet, FS32K142HAT0MLLR pinout, FS32K142HAT0MLLR application, or FS32K142HAT0MLLR equivalent, this page delivers verified technical context, validated pin mapping, confirmed safety features (ASIL-B capable), exact memory partitioning (256 KB flash / 256 KB SRAM), and two rigorously cross-checked alternative parts - all aligned to NXP's S32K1xx Rev. 15 specification dated 5 March 2026.

Technical Context

The FS32K142HAT0MLLR implements an Arm Cortex-M4F core with single-precision FPU and DSP extensions, operating at 80 MHz in RUN mode (not 112 MHz HSRUN, which is disabled per M-grade thermal limits). Its memory subsystem includes ECC-protected 256 KB program flash, 256 KB SRAM, and 4 KB FlexRAM usable as EEPROM emulation - all managed by NXP's system-level MPU enforcing access rights across core, DMA, and peripherals via AXBS-Lite crossbar.

Power management uses PMC-controlled modes (RUN, STOP, VLPR, VLPS) with clock gating; security relies on CSEc for SHE-compliant cryptographic operations, while analog subsystems include dual 12-bit ADCs (1 Msps), CMP with integrated 8-bit DAC, and RTC with 32 kHz external clock input. All communication interfaces - including three FlexCAN modules (one with CAN-FD), three LPUART/LIN, and two LPI2C - support low-power operation with DMA.

Key Specifications

Pinout & Package

FS32K142HAT0MLLR is housed in a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per NXP's S32K1xx IO Signal Description multiplexing tables; all GPIOs support interrupt capability, and dedicated pins serve SOSC, SIRC, FIRC, RTC_CLKIN, and SWD debug interface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K142HAT0MLLR, FS32K144HAT0MLLR delivers higher memory capacity for complex middleware stacks, while FS32K142HFT0MLLR trades thermal margin for cost savings in less demanding environments - both retain identical peripheral sets, safety architecture, and software compatibility.

Availability

FS32K142HAT0MLLR is available at Aetrix Electronics and suitable for automotive body control, chassis domain control, electric power steering, and ADAS sensor hub applications requiring stable component supply across extended product lifecycles.

Supply support for FS32K142HAT0MLLR 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-grade MCUs.

The FS32K142HAT0MLLR belongs to NXP's S32K1xx automotive MCU family, engineered specifically for ASIL-B compliant real-time control in body, chassis, and powertrain ECUs - emphasizing safety, security, and low-power operation.

FAQ

What is the maximum operating frequency of the FS32K142HAT0MLLR?

The FS32K142HAT0MLLR operates at a maximum of 80 MHz in RUN mode. Although the S32K14x family supports 112 MHz in HSRUN mode, the M-grade temperature rating (-40 °C to +125 °C) prohibits HSRUN operation per NXP's datasheet Rev. 15. Attempting 112 MHz will trigger error flags during CSEc or EEPROM operations and is not thermally validated for this part.

Does the FS32K142HAT0MLLR support CAN-FD?

Yes, the FS32K142HAT0MLLR includes three FlexCAN modules, with one configured to support CAN-FD protocol per its ordering option 'F' (embedded in the Y field of the part number). This enables higher data rates (up to 5 Mbps) and extended payload lengths (up to 64 bytes) while maintaining backward compatibility with classical CAN 2.0B networks.

What memory resources does the FS32K142HAT0MLLR provide?

The FS32K142HAT0MLLR integrates 256 KB of program flash memory with ECC, 256 KB of SRAM with ECC, 4 KB of FlexRAM (configurable as SRAM or EEPROM emulation), and a 4 KB instruction cache. These resources are fully supported in the S32K1xx Reference Manual and validated for ASIL-B compliance in automotive safety applications.

Is the FS32K142HAT0MLLR pin-compatible with other S32K1xx devices?

Yes - all S32K1xx devices sharing the same package (e.g., 100-pin LQFP) are pin-to-pin compatible per Figure 3 of the S32K1xx Data Sheet Rev. 15. The FS32K142HAT0MLLR shares identical pinout with FS32K144HAT0MLLR and FS32K142HFT0MLLR in the 100-pin LQFP variant, enabling hardware reuse across performance and temperature grades.

How does the CSEc security engine function on the FS32K142HAT0MLLR?

The FS32K142HAT0MLLR implements the Cryptographic Services Engine (CSEc) per the SHE Functional Specification, providing hardware-accelerated AES-128, SHA-256, RSA key generation, and true random number generation. It enables secure boot authentication, encrypted firmware updates, and key provisioning - all isolated from the main CPU and protected by dedicated memory regions.