NXP Semiconductors FS32K146HFT0VLQR

Overview

FS32K146HFT0VLQR from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB flash, 256 KB SRAM (both with ECC), and support for HSRUN mode at 112 MHz. It integrates FlexCAN with optional CAN-FD, dual 12-bit ADCs (up to 32 channels), CSEc security engine, and operates across -40 °C to 105 °C. It targets body control modules, gateway ECUs, and motor control in 12 V automotive systems.

For engineers reviewing the FS32K146HFT0VLQR datasheet, FS32K146HFT0VLQR pinout, FS32K146HFT0VLQR application, or FS32K146HFT0VLQR equivalent, key selection considerations include its 100-pin LQFP package, ASIL-B capable safety features, dual ADC timing synchronization, CSEc cryptographic acceleration, and mandatory RUN-mode execution for EEPROM/CSEc operations - critical for functional safety and secure boot design.

Technical Context

The FS32K146HFT0VLQR implements a dual-core architecture with Arm Cortex-M4F (primary) and Cortex-M0+ (auxiliary) executing on a shared AXBS-Lite crossbar switch. Its clock system includes SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with dynamic mode switching between HSRUN (112 MHz), RUN (80 MHz), STOP, VLPR, and VLPS.

Safety mechanisms include System MPU enforcing memory access rights per master (Core, DMA, Ethernet), ECC on flash/SRAM, CRC module, dual watchdogs (WDOG + EWM), and hardware-based CSEc compliant with SHE specification. All peripherals - including FlexTimers, LPIT, PDB, and TRGMUX - are synchronized to enable deterministic real-time response in safety-critical automotive functions.

Key Specifications

Pinout & Package

FS32K146HFT0VLQR is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin compatibility is guaranteed across all S32K14x devices sharing this package footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S32K144HFT0VLQR, FS32K146HFT0VLQR adds 1 MB flash, 64 KB SRAM, second ADC, and third FlexCAN - enabling richer feature sets in mid-tier gateways. Against S32K148HFT0VLQR, it omits Ethernet and SAI but retains identical safety/security architecture and pin compatibility - ideal for CAN-centric applications where those interfaces are unused.

Availability

FS32K146HFT0VLQR is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering gateways, battery management sensor hubs, and advanced lighting control units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for FS32K146HFT0VLQR 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 applications, with deep expertise in functional safety and automotive-grade reliability.

The S32K1xx family - including FS32K146HFT0VLQR - was designed specifically for automotive electronic control units requiring ASIL-B compliance, real-time determinism, and integrated security, targeting body electronics, chassis, and powertrain subsystems.

FAQ

What is the maximum operating frequency of the FS32K146HFT0VLQR, and under what conditions is it valid?

The FS32K146HFT0VLQR achieves a maximum operating frequency of 112 MHz in HSRUN mode, validated across -40 °C to +105 °C ambient temperature. This speed is only permitted when executing program code from flash or SRAM - CSEc cryptographic operations and EEPROM emulation must instead run in RUN mode at 80 MHz to avoid error flag assertion. The device automatically transitions between modes via software-configurable PMC registers.

Does the FS32K146HFT0VLQR support CAN-FD, and how many CAN interfaces does it include?

Yes, the FS32K146HFT0VLQR supports CAN-FD on all three integrated FlexCAN modules, as confirmed in the S32K1xx product series comparison table. Each FlexCAN module can operate independently in classical CAN or CAN-FD mode, enabling mixed-network architectures - for example, one CAN-FD bus for high-bandwidth sensor data and two classical CAN buses for legacy actuator control - all within the same 100-pin LQFP package.

How does the CSEc (Cryptographic Services Engine) function in the FS32K146HFT0VLQR, and what are its limitations?

The CSEc in FS32K146HFT0VLQR implements SHE v1.1-compliant AES-128/256, SHA-256, and true RNG for secure boot, key derivation, and firmware authentication. However, CSEc execution is prohibited in HSRUN mode (112 MHz); the device must be switched to RUN mode (80 MHz) before initiating any CSEc command. This mode transition is managed via PMC registers and introduces deterministic latency - a design consideration for time-critical secure update sequences.

What ADC capabilities does the FS32K146HFT0VLQR offer, and how are they synchronized?

The FS32K146HFT0VLQR integrates two independent 12-bit SAR ADC modules, each supporting up to 32 analog input channels and 1 Msps sampling rate. Synchronization is achieved through hardware trigger routing: the Programmable Delay Block (PDB) or Low Power Interrupt Timer (LPIT) can generate simultaneous start-of-conversion signals to both ADCs, ensuring sub-microsecond alignment - critical for vector control in three-phase motor drives and differential sensor measurements.

Is the FS32K146HFT0VLQR pin-compatible with other S32K14x devices in the same package?

Yes, the FS32K146HFT0VLQR is fully pin-compatible with all other S32K14x devices offered in the 100-pin LQFP package, including S32K142HFT0VLQR, S32K144HFT0VLQR, and S32K148HFT0VLQR. This allows hardware reuse across product variants - for instance, designing a single PCB that supports multiple memory/peripheral configurations via firmware selection - reducing development cost and accelerating qualification for automotive platforms.