NXP Semiconductors FS32K146HFT0VLLT

Overview

FS32K146HFT0VLLT 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 CSEc security engine, dual 12-bit ADCs (up to 32 channels), three FlexCAN modules (CAN-FD capable), and operates across -40 °C to 105 °C ambient temperature. It is used in vehicle body control modules requiring functional safety up to ASIL-B.

For engineers reviewing the FS32K146HFT0VLLT datasheet, FS32K146HFT0VLLT pinout, FS32K146HFT0VLLT application, or FS32K146HFT0VLLT equivalent, key selection considerations include its VLLT 100-pin LQFP package, HSRUN/RUN power mode switching requirement for CSEc/EEPROM operations, CAN-FD interface count, FlexTimer channel allocation, and ASIL-B-capable system MPU implementation.

Technical Context

The FS32K146HFT0VLLT implements an Arm Cortex-M4F core with DSP extensions and single-precision FPU, executing at up to 112 MHz in HSRUN mode (80 MHz in RUN mode). Its memory subsystem includes 2 MB program flash with ECC, 64 KB FlexNVM for EEPROM emulation, and 256 KB SRAM with ECC - all protected by NXP's system-level MPU routed through the AXBS-Lite crossbar switch.

Peripherals include three FlexCAN modules (all CAN-FD capable), eight FlexTimer modules (64 total PWM/IC/OC channels), dual 12-bit ADCs (1 Msps each), and a dedicated Cryptographic Services Engine (CSEc) compliant with SHE specification. Power management supports five modes (HSRUN, RUN, STOP, VLPR, VLPS), with mandatory mode transition from HSRUN to RUN for CSEc execution or EEPROM write/erase.

Key Specifications

Pinout & Package

FS32K146HFT0VLLT is housed in a 100-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, RoHS-compliant, and moisture sensitivity level (MSL) 3. The package supports full I/O access including 156 GPIOs (pin-mapped per package variant), with dedicated pins for SOSC, RTC_CLKIN, SWD debug, and multiple CAN transceiver interfaces.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K148HFT0VLLT, the FS32K146HFT0VLLT omits Ethernet and SAI but retains full CAN-FD and security features; versus FS32K144HFT0VLLT, it doubles flash/SRAM and adds QuadSPI - making it the balanced choice for scalable body domain ECUs requiring future-proof memory and interface headroom.

Availability

FS32K146HFT0VLLT is available at Aetrix Electronics and suitable for automotive body control modules, electronic parking brake systems, roof module controllers, and seat control units requiring stable component supply across extended production lifecycles.

Supply support for FS32K146HFT0VLLT 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 focused on automotive, industrial, IoT, and communication infrastructure solutions, with deep expertise in functional safety and security IP.

The S32K1xx family is designed specifically for automotive body and gateway applications, emphasizing ASIL-B compliance, robust EMC performance, long-term automotive qualification, and seamless integration with NXP's S32 Design Studio ecosystem.

FAQ

What is the maximum operating frequency of the FS32K146HFT0VLLT and under what conditions?

The FS32K146HFT0VLLT operates at up to 112 MHz in HSRUN mode and 80 MHz in RUN mode. HSRUN mode requires VDD ≥ 2.7 V and ambient temperature ≤ 105 °C. For CSEc execution or EEPROM write/erase, the device must be in RUN mode at 80 MHz - attempting these operations in HSRUN triggers error flags per the datasheet.

Does the FS32K146HFT0VLLT support CAN-FD, and how many instances are available?

Yes, the FS32K146HFT0VLLT integrates three FlexCAN modules, all supporting CAN-FD (ISO 11898-1) with data rates up to 5 Mbps. Each module includes dedicated message buffers, error counters, and loopback/self-test capabilities - enabling concurrent high-speed communication on multiple vehicle networks.

What package type and pin count does the FS32K146HFT0VLLT use?

The FS32K146HFT0VLLT uses a 100-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, designated by the "LLT" suffix in the part number. This package supports full peripheral mapping including all three FlexCAN interfaces, dual ADCs, SWD debug, and up to 156 GPIOs (subject to pin multiplexing).

How does the CSEc security engine function on the FS32K146HFT0VLLT?

The FS32K146HFT0VLLT includes a Cryptographic Services Engine (CSEc) compliant with the SHE specification, providing hardware-accelerated AES-128/256, SHA-256, RNG, and key management. It requires operation in RUN mode (80 MHz); attempts in HSRUN mode trigger error flags and require mode transition before secure operations proceed.

What is the memory configuration of the FS32K146HFT0VLLT?

The FS32K146HFT0VLLT features 2 MB of program flash memory with ECC, 64 KB of FlexNVM for EEPROM emulation (also with ECC), and 256 KB of SRAM with ECC. Additionally, it includes 4 KB of FlexRAM usable as SRAM or EEPROM emulation, and a 4 KB instruction cache to reduce memory access latency.

Is the FS32K146HFT0VLLT qualified for automotive applications, and what standards does it meet?

Yes, the FS32K146HFT0VLLT is AEC-Q100 Grade 2 qualified (-40 °C to +105 °C), supports ISO 26262 ASIL-B development processes, and includes safety mechanisms such as ECC on flash/SRAM, system MPU, CRC module, dual watchdogs (WDOG/EWM), and lockstep-capable peripherals - meeting requirements for automotive body electronics.