NXP Semiconductors FS32K142UIT0VLHT

Overview

FS32K142UIT0VLHT 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. It integrates FlexCAN with CAN-FD, LPUART/LIN, LPSPI, and CSEc security engine - used in body control modules and gateway applications.

For engineers reviewing the FS32K142UIT0VLHT datasheet, FS32K142UIT0VLHT pinout, FS32K142UIT0VLHT application, or FS32K142UIT0VLHT equivalent, key selection criteria include HSRUN-mode timing compliance, ASIL-B-capable power management, CSEc cryptographic execution constraints, FlexCAN FD channel count, and 100-pin LQFP I/O mapping for automotive wiring harness integration.

Technical Context

The FS32K142UIT0VLHT implements a dual-core capable architecture with Arm Cortex-M4F core (112 MHz HSRUN / 80 MHz RUN) and integrated DSP/FPU, supporting deterministic real-time execution in automotive control loops. Its memory subsystem includes ECC-protected 256 KB flash, 256 KB SRAM, and 4 KB FlexRAM usable as EEPROM emulation - all managed via NXP's system MPU enforcing crossbar-level access rights.

Power management is governed by PMC with five modes (HSRUN, RUN, STOP, VLPR, VLPS); CSEc security operations and EEPROM writes are explicitly restricted to RUN mode (80 MHz), not HSRUN, per hardware enforcement. Clocking relies on SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with dedicated RTC_CLKIN input.

Key Specifications

Pinout & Package

FS32K142UIT0VLHT is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package, RoHS-compliant and moisture-sensitive level 3. Pin assignment follows S32K14x family pin-to-pin compatibility across 100-pin variants; I/O count is up to 89 GPIOs with interrupt capability, including dedicated CAN, LIN, SPI, I2C, and ADC signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K142UIT0VLHT, FS32K144UIT0VLHT provides scalable memory for future firmware growth without layout change, while FS32K142HIT0VLHT reduces thermal design complexity and BOM cost where peak 112 MHz execution is unused.

Availability

FS32K142UIT0VLHT is available at Aetrix Electronics and suitable for automotive body control modules, gateway ECUs, and electric power steering sensor interfaces requiring stable component supply across extended production lifecycles.

Supply support for FS32K142UIT0VLHT 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 ASIL-certified microcontrollers and hardware security.

The S32K1xx family - including FS32K142UIT0VLHT - was engineered specifically for automotive electronic control units demanding functional safety (ISO 26262 ASIL-B), security (SHE/CSEc), and robust real-time performance in harsh environments.

FAQ

What is the maximum operating frequency of the FS32K142UIT0VLHT, and under what conditions is it valid?

The FS32K142UIT0VLHT achieves 112 MHz in HSRUN mode, validated across -40 °C to +105 °C ambient temperature with 2.7–5.5 V supply. However, this frequency is incompatible with CSEc security operations or EEPROM writes - those functions require switching to RUN mode (80 MHz). The device automatically asserts error flags if attempted in HSRUN, ensuring deterministic failure behavior for safety-critical systems.

Does the FS32K142UIT0VLHT support CAN-FD, and how many channels are available?

Yes, the FS32K142UIT0VLHT integrates two FlexCAN modules, each configurable for CAN-FD (ISO 11898-1) operation up to 5 Mbps. Both channels support programmable bit timing, hardware message filtering, and loopback self-test - enabling dual-network redundancy in gateway or domain controller applications without external CAN transceivers beyond physical layer components.

How does the CSEc security engine in the FS32K142UIT0VLHT differ from software-based cryptography?

The CSEc in FS32K142UIT0VLHT is a dedicated hardware block implementing SHE-compliant AES-128, SHA-256, HMAC, and true random number generation - executing cryptographic operations independently of the CPU with constant-time execution and tamper-resistant key storage. Unlike software libraries, it prevents timing attacks, reduces CPU load by >90%, and guarantees secure boot integrity verification before application code execution begins.

What package type and pin count does the FS32K142UIT0VLHT use, and is it pin-compatible with other S32K1xx devices?

The FS32K142UIT0VLHT uses a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) and is pin-to-pin compatible with all other S32K1xx devices offered in the same 100-pin LQFP variant, including FS32K144UIT0VLHT and FS32K146UIT0VLHT. This allows direct hardware reuse across memory- or feature-scaled derivatives without PCB redesign.

What is the role of the System MPU in the FS32K142UIT0VLHT, and how does it differ from the Arm Core MPU?

The System MPU in FS32K142UIT0VLHT is NXP's crossbar-switch-level memory protection unit - enforcing access rights for all masters (CPU, DMA, Ethernet) across flash, SRAM, and peripherals. Unlike the Arm Core MPU (absent in this M4F implementation), it protects against DMA-initiated or peripheral-initiated memory violations, enabling full ASIL-B memory isolation in AUTOSAR OS environments without relying solely on CPU privilege levels.