NXP Semiconductors FS32K146HAT0VLHT

Overview

FS32K146HAT0VLHT from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB flash, 256 KB SRAM (both with ECC), 112 MHz HSRUN operation, and integrated CSEc security engine. It features dual 12-bit ADCs (32-channel total), three FlexCAN modules (CAN-FD capable), and operates across -40 °C to 105 °C for body control module and powertrain sensor interface applications.

For engineers reviewing the FS32K146HAT0VLHT datasheet, FS32K146HAT0VLHT pinout, FS32K146HAT0VLHT application, or FS32K146HAT0VLHT equivalent, this page delivers verified core architecture, memory mapping, safety-critical power modes (HSRUN/RUN/STOP/VLPR/VLPS), CAN-FD timing compliance, and CSEc cryptographic execution constraints - all confirmed against NXP's Rev. 15 S32K1xx Data Sheet (5 March 2026).

Technical Context

The FS32K146HAT0VLHT implements a dual-core Arm Cortex-M4F/M0+ architecture with configurable NVIC, single-precision FPU, and DSP extensions. Its clock system integrates SOSC (4–40 MHz), FIRC (48 MHz), SIRC (8 MHz), LPO (128 kHz), and SPLL supporting up to 112 MHz in HSRUN mode.

Power management includes PMC-controlled HSRUN (112 MHz), RUN (80 MHz), STOP, VLPR, and VLPS modes - with explicit restriction that CSEc security operations and EEPROM writes/erase must execute in RUN mode only. Memory subsystem comprises 2 MB program flash with ECC, 64 KB FlexNVM with EEPROM emulation, 256 KB SRAM with ECC, and 4 KB FlexRAM usable as SRAM or EEPROM.

Key Specifications

Pinout & Package

FS32K146HAT0VLHT is packaged in a 144-pin LQFP (Lead-Free, RoHS-compliant) with 0.5 mm pitch and exposed thermal pad. Pin assignment follows NXP's S32K14x family pinout definition, where I/O count reaches up to 156 GPIOs depending on package selection - the 144-pin LQFP variant provides 128 GPIOs with full peripheral multiplexing support.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K148HAT0VLHT, FS32K146HAT0VLHT removes Ethernet/SAI overhead while retaining full CAN-FD, ADC, and security capability - making it optimal for non-gateway automotive control. Against FS32K144HAT0VLHT, it adds 1 MB flash headroom, FlexNVM-based EEPROM emulation, and two extra FlexTimer modules essential for complex motor control.

Availability

FS32K146HAT0VLHT is available at Aetrix Electronics and suitable for automotive body control, electric power steering, ADAS sensor fusion, and onboard charger control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for FS32K146HAT0VLHT 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 ASIL-B functional safety and automotive-grade reliability.

The S32K1xx family - including FS32K146HAT0VLHT - was designed specifically for automotive electronic control units requiring ISO 26262 compliance, robust EMC performance, and long-term supply stability in harsh environments.

FAQ

What is the maximum operating frequency of the FS32K146HAT0VLHT and under what conditions?

The FS32K146HAT0VLHT achieves up to 112 MHz in HSRUN mode, enabled only when ambient temperature is ≤105 °C and supply voltage is ≥2.97 V (required for PLL operation). At higher temperatures or lower voltages, it defaults to RUN mode at 80 MHz. This dual-frequency capability allows dynamic performance scaling while maintaining functional safety boundaries defined in the S32K1xx Data Sheet Rev. 15.

Does the FS32K146HAT0VLHT support CAN-FD, and how many instances are available?

Yes, the FS32K146HAT0VLHT integrates three independent FlexCAN modules, each supporting ISO 11898-1 CAN-FD with bit-rate switching up to 5 Mbps in the data phase. All three CAN controllers include message RAM, FIFO support, and loopback test mode - confirmed in the S32K1xx Feature Comparison table and validated for automotive gateway and ECU applications requiring high-bandwidth diagnostics and control messaging.

Can CSEc security operations be executed in HSRUN mode on the FS32K146HAT0VLHT?

No - CSEc (Cryptographic Services Engine) operations such as AES encryption, key generation, or secure boot verification cannot be executed in HSRUN mode (112 MHz) on the FS32K146HAT0VLHT. As explicitly stated in the S32K1xx Data Sheet Rev. 15, attempting CSEc or EEPROM write/erase in HSRUN triggers error flags; the device must switch to RUN mode (80 MHz) to perform these functions safely and reliably.

What is the ADC resolution and sampling rate supported by the FS32K146HAT0VLHT?

The FS32K146HAT0VLHT includes two independent 12-bit SAR analog-to-digital converters, each capable of up to 1 million samples per second (1 Msps) with hardware-triggered conversion sequences. Each ADC supports up to 32 analog input channels, enabling simultaneous sampling of multiple sensors - a capability verified in the "Mixed-signal analog" section and feature comparison tables of the official S32K1xx Data Sheet.

Which package type is used for the FS32K146HAT0VLHT, and how many GPIOs does it provide?

The FS32K146HAT0VLHT uses a 144-pin LQFP package with 0.5 mm pitch and exposed thermal pad. This variant provides up to 128 GPIOs with full peripheral multiplexing, as confirmed in the S32K1xx Feature Comparison figure and package summary table. The pinout is fully compatible with other S32K14x devices in the same package footprint, enabling scalable design reuse across the family.