NXP Semiconductors FS32K142WAT0WLHR

Overview

FS32K142WAT0WLHR from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 256 KB flash, 256 KB SRAM, and support for HSRUN mode at up to 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 150 °C ambient temperature - designed for engine control units and battery management systems.

For engineers reviewing the FS32K142WAT0WLHR datasheet, FS32K142WAT0WLHR pinout, FS32K142WAT0WLHR application, or FS32K142WAT0WLHR equivalent, key selection criteria include its 150 °C extended temperature rating, FlexCAN with CAN-FD support, CSEc cryptographic acceleration, and compatibility with AUTOSAR and ISO 26262 ASIL-B functional safety requirements.

Technical Context

The FS32K142WAT0WLHR implements a dual-core architecture with Arm Cortex-M4F as primary execution core and optional M0+ for low-power background tasks. Its clock system includes SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), enabling dynamic power mode transitions between HSRUN, RUN, STOP, VLPR, and VLPS.

Memory subsystem features ECC-protected 256 KB flash, 256 KB SRAM, 4 KB FlexRAM (configurable as SRAM or EEPROM emulation), and QuadSPI with HyperBus™ support. Safety mechanisms include System MPU, CRC module, WDOG, EWM, and hardware-based CSEc compliant with SHE specification.

Key Specifications

Pinout & Package

FS32K142WAT0WLHR is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow NXP's S32K14xW family layout, supporting full GPIO remapping via IOMUX and TRGMUX.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S32K144WAT0WLHR, FS32K142WAT0WLHR offers optimized cost/performance for mid-tier ECUs without needing extra memory headroom; versus MC9S12XEQ512MAL, it delivers 3× DMIPS, integrated security, and CAN-FD - but requires new toolchain adoption and layout revision.

Availability

FS32K142WAT0WLHR is available at Aetrix Electronics and suitable for engine control units, battery management systems, and electric power steering applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for FS32K142WAT0WLHR 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 standards.

The S32K1xx family - including FS32K142WAT0WLHR - was engineered specifically for ASIL-B automotive control applications, emphasizing real-time determinism, hardware-enforced security, and extended temperature resilience in powertrain and chassis domains.

FAQ

What is the maximum operating temperature for FS32K142WAT0WLHR?

The FS32K142WAT0WLHR is rated for ambient operation from -40 °C to +150 °C in RUN mode, making it suitable for under-hood automotive applications such as transmission control and turbocharger management. This rating is validated per Table 6 of the S32K1xx Data Sheet Rev. 15 and applies specifically to the "W" temperature grade variant of the S32K14xW series.

Does FS32K142WAT0WLHR support CAN-FD, and how many channels are available?

Yes, FS32K142WAT0WLHR integrates three FlexCAN modules, each supporting CAN-FD per ISO 11898-1 FD. All three channels operate concurrently and independently, enabling high-throughput communication for diagnostics, OTA updates, and inter-ECU messaging. The "F" in the ordering option confirms CAN-FD capability for this specific part number.

Can FS32K142WAT0WLHR execute CSEc security functions in HSRUN mode?

No, FS32K142WAT0WLHR cannot execute CSEc cryptographic operations or EEPROM writes/erases while in HSRUN mode (112 MHz). As documented in the S32K1xx Data Sheet Rev. 15, these functions trigger error flags in HSRUN mode and require switching to RUN mode (80 MHz) to proceed safely and reliably.

What package type and pin count does FS32K142WAT0WLHR use?

FS32K142WAT0WLHR uses a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with thermal pad. This matches the S32K14xW family's standardized footprint and is pin-compatible with other 64-pin variants like S32K144WAT0WLHR, enabling scalable design reuse across memory tiers.

Is FS32K142WAT0WLHR qualified for ISO 26262 ASIL-B compliance?

Yes, FS32K142WAT0WLHR is designed to support ISO 26262 ASIL-B applications. Its safety features - including ECC on flash/SRAM, System MPU, CRC module, dual watchdogs (WDOG/EWM), and lockstep-capable peripherals - are documented in the S32K1xx Functional Safety Manual and validated through NXP's automotive qualification process.