NXP Semiconductors FS32K142HRT0VLLT

Overview

FS32K142HRT0VLLT from NXP Semiconductors is an automotive-grade 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. It integrates FlexCAN with optional CAN-FD, dual 12-bit ADCs (up to 32 channels), and CSEc cryptographic engine - deployed in body control modules requiring ASIL-B compliance.

For engineers reviewing the FS32K142HRT0VLLT datasheet, FS32K142HRT0VLLT pinout, FS32K142HRT0VLLT application, or FS32K142HRT0VLLT equivalent, key selection considerations include HSRUN/RUN mode switching constraints for EEPROM/CSEc operations, 100-pin LQFP I/O mapping, CAN-FD timing validation, and thermal derating above 105 °C ambient.

Technical Context

The FS32K142HRT0VLLT implements a dual-core execution environment with Arm Cortex-M4F (primary) and M0+ (auxiliary) for asymmetric task partitioning. Its clock system includes SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with automatic failover and configurable gating per peripheral domain.

Power management uses five distinct modes (HSRUN, RUN, STOP, VLPR, VLPS), where HSRUN enables peak performance but disables CSEc and EEPROM writes - requiring runtime transition to RUN mode (80 MHz) for secure operations. Memory protection relies on NXP's system MPU at the AXBS-Lite crossbar level, enforcing access rights for core, DMA, and Ethernet masters independently.

Key Specifications

Pinout & Package

FS32K142HRT0VLLT is housed in a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow NXP's standardized S32K14x pinout matrix, supporting full GPIO remapping via TRGMUX and dedicated signal routing for CAN, LIN, SPI, and ADC interfaces.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K144HRT0VLLT, FS32K142HRT0VLLT reduces flash/SRAM capacity and peripheral count to lower cost and power, while retaining identical 100-pin LQFP compatibility and CAN-FD capability. Against FS32K142HRT0MLLT, it trades extended temperature range for higher performance and HSRUN mode - critical for time-sensitive motor control loops.

Availability

FS32K142HRT0VLLT is available at Aetrix Electronics and suitable for automotive body control, electric power steering, and ADAS sensor hub applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 qualification.

Supply support for FS32K142HRT0VLLT 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 automotive, industrial, and IoT solutions, with deep expertise in functional safety and secure microcontrollers.

The S32K1xx family targets automotive electronic control units requiring ASIL-B compliance, featuring integrated safety mechanisms, cryptographic acceleration, and robust power management - designed specifically for body, chassis, and ADAS domains.

FAQ

What is the maximum operating frequency of the FS32K142HRT0VLLT and under what conditions?

The FS32K142HRT0VLLT achieves up to 112 MHz in HSRUN mode, but only when operating within its specified voltage (2.7–5.5 V) and ambient temperature (-40 °C to 105 °C) ranges. Operation above 105 °C ambient requires switching to RUN mode (80 MHz). The FS32K142HRT0VLLT must transition to RUN mode to execute CSEc or EEPROM write/erase functions - attempting these in HSRUN mode triggers hardware error flags.

Does the FS32K142HRT0VLLT support CAN-FD, and what configuration is required?

Yes, the FS32K142HRT0VLLT supports CAN-FD through its single FlexCAN module when enabled in the configuration registers and paired with a compatible external CAN transceiver. The FS32K142HRT0VLLT's FlexCAN module complies with ISO 11898-1 and supports data phase bit rates up to 5 Mbps. No additional silicon revision or option bit is required - CAN-FD capability is inherent to the FS32K142HRT0VLLT's FlexCAN IP block.

How does the FS32K142HRT0VLLT handle memory protection for functional safety compliance?

The FS32K142HRT0VLLT implements NXP's system MPU at the AXBS-Lite crossbar switch level - not the Arm core MPU - granting independent read/write/execute permissions per master (CPU, DMA, Ethernet) to each memory region. This architecture enforces ASIL-B memory isolation without relying on core-level enforcement, and is validated in the S32K1xx Series Reference Manual. The FS32K142HRT0VLLT's system MPU is integral to its ISO 26262 certification evidence package.

What are the power mode limitations for CSEc and EEPROM operations on the FS32K142HRT0VLLT?

The FS32K142HRT0VLLT prohibits CSEc cryptographic operations and EEPROM write/erase commands in HSRUN mode (112 MHz) and VLPR mode - executing them triggers hardware error flags. These functions must be performed in RUN mode (80 MHz), requiring explicit software-controlled mode transition. This constraint is documented in the S32K1xx Data Sheet Rev. 15 and applies universally across all S32K14x devices, including the FS32K142HRT0VLLT.

Is the FS32K142HRT0VLLT pin-compatible with other S32K14x variants in the same package?

Yes, the FS32K142HRT0VLLT is pin-to-pin compatible with all other S32K14x devices offered in the 100-pin LQFP package, including FS32K144HRT0VLLT and FS32K146HRT0VLLT. Peripheral availability depends on pin multiplexing - for example, ADC channel count and FlexCAN instance count scale with device variant - but the physical layout, power, ground, and debug signals remain identical across the FS32K142HRT0VLLT and compatible parts.