NXP Semiconductors FS32K142UAT0VLLR

Overview

FS32K142UAT0VLLR 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 112 MHz (HSRUN mode), features 256 KB flash with ECC, 256 KB SRAM with ECC, and supports -40 °C to 105 °C ambient operation in a 100-pin LQFP package. Used in body control modules requiring CAN-FD, LIN, and functional safety up to ASIL-B.

For engineers reviewing the FS32K142UAT0VLLR datasheet, FS32K142UAT0VLLR pinout, FS32K142UAT0VLLR application, or FS32K142UAT0VLLR equivalent, key selection criteria include HSRUN/RUN mode switching constraints for CSEc/EEPROM operations, FlexCAN with optional CAN-FD support, integrated FPU for motor control math, and system MPU-based memory protection across multiple bus masters.

Technical Context

The FS32K142UAT0VLLR implements a dual-core-capable architecture with Arm Cortex-M4F core (Armv7, Thumb-2 ISA), single-precision FPU, and DSP extensions - enabling deterministic execution of motor control algorithms and sensor fusion. Its clock system integrates SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with configurable power modes (HSRUN, RUN, STOP, VLPR, VLPS) governed by PMC.

Memory subsystem includes ECC-protected 256 KB program flash, 256 KB SRAM, 4 KB FlexRAM (SRAM/EEPROM emulation), and 32 KB code cache. Peripheral set comprises three FlexCAN modules (one with CAN-FD), three LPUART/LIN, three LPSPI, two LPI2C, eight FlexTimers (64 channels total), and CSEc cryptographic engine compliant with SHE specification.

Key Specifications

Pinout & Package

FS32K142UAT0VLLR is housed in a 100-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, thermally enhanced for automotive PCB layouts. Pinout conforms to S32K14x family standardization, enabling pin-to-pin compatibility across same-package variants (e.g., FS32K144UAT0VLLR).

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K142UAT0VLLR, FS32K144UAT0VLLR offers scalable memory for future feature growth without layout change, while FS32K142MT0VLQR trades I/O and CAN-FD capability for compactness and cost - all maintain identical safety architecture and toolchain compatibility.

Availability

FS32K142UAT0VLLR is available at Aetrix Electronics and suitable for automotive body electronics, electric power steering, ADAS sensor hubs, and onboard charger control requiring stable component supply across extended product lifecycles.

Supply support for FS32K142UAT0VLLR 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 is engineered specifically for automotive electronic control units demanding ASIL-B compliance, real-time determinism, and long-term reliability - targeting body, chassis, and electrification applications.

FAQ

What is the maximum operating frequency of the FS32K142UAT0VLLR and under what conditions?

The FS32K142UAT0VLLR achieves up to 112 MHz in HSRUN mode, but this requires VDD ≥ 2.7 V and ambient temperature ≤ 105 °C. For CSEc cryptographic operations or EEPROM emulation, the device must drop to RUN mode (80 MHz); attempting security functions at 112 MHz triggers error flags and halts execution. This constraint is hardwired in the PMC and documented in the S32K1xx Data Sheet Rev. 15.

Does the FS32K142UAT0VLLR support CAN-FD, and how many CAN interfaces does it include?

The FS32K142UAT0VLLR includes three FlexCAN modules, with one channel supporting CAN-FD (ISO 11898-1). The "F" in the ordering option "UAT0VLLR" confirms CAN-FD capability. All three CAN modules share common register sets and support bit rates up to 5 Mbps in FD mode, with programmable data phase timing and flexible payload lengths up to 64 bytes.

What memory protection mechanisms are implemented in the FS32K142UAT0VLLR?

The FS32K142UAT0VLLR implements NXP's system-level Memory Protection Unit (MPU) at the AXBS-Lite crossbar switch - not the Arm core MPU. This allows independent access rights assignment for each master (Cortex-M4F, eDMA, ENET) to protected memory regions. Flash, SRAM, and peripheral registers can be segmented with read/write/execute permissions, satisfying ASIL-B memory isolation requirements per ISO 26262.

How does the FS32K142UAT0VLLR handle power management in automotive stop-start environments?

The FS32K142UAT0VLLR supports five low-power modes: HSRUN, RUN, STOP, VLPR, and VLPS. In STOP mode, current drops below 1 µA while retaining SRAM and RTC context; wake-up occurs via GPIO, LPIT, or CAN activity. Its voltage supervisor detects brown-out conditions down to 2.7 V, and the PMC automatically transitions between modes based on software commands or hardware events - critical for maintaining ECU responsiveness during engine cranking.

Is the FS32K142UAT0VLLR pin-compatible with other S32K1xx devices in the same package?

Yes - all S32K1xx devices sharing the 100-pin LQFP package (e.g., FS32K144UAT0VLLR, FS32K146UAT0VLLR) are pin-to-pin compatible per Figure 3 in the S32K1xx Data Sheet. Peripheral availability depends on pin multiplexing; unused functions on FS32K142UAT0VLLR (e.g., Ethernet MAC, second SAI) are simply unconnected, allowing seamless migration to higher-memory variants without PCB redesign.