NXP Semiconductors FS32K146HAT0MMHR

Overview

FS32K146HAT0MMHR 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 2 MB program flash with ECC, 256 KB SRAM with ECC, and supports -40 °C to +125 °C ambient operation. It integrates FlexCAN with optional CAN-FD, LPUART/LIN, LPSPI, and cryptographic services (CSEc) for secure boot and key management - deployed in body control modules and battery management systems.

For engineers reviewing the FS32K146HAT0MMHR datasheet, FS32K146HAT0MMHR pinout, FS32K146HAT0MMHR application, or FS32K146HAT0MMHR equivalent, this page delivers verified specifications, package mapping, functional alternatives, and design-critical timing/power/safety constraints - all aligned to the S32K1xx Rev. 15 datasheet and official orderable part definitions.

Technical Context

The FS32K146HAT0MMHR implements a dual-core capable architecture with Arm Cortex-M4F core (Armv7, Thumb-2 ISA), integrated DSP, single-precision FPU, and configurable NVIC. Its clock system includes SOSC (4–40 MHz), FIRC (48 MHz), SIRC (8 MHz), LPO (128 kHz), and SPLL supporting up to 112 MHz HSRUN operation.

Power management uses PMC with five modes: HSRUN (112 MHz), RUN (80 MHz), STOP, VLPR, and VLPS. Critical safety functions - including CSEc execution and EEPROM emulation - require mode switching from HSRUN to RUN (80 MHz), as concurrent operation triggers error flags per datasheet Section 1.1 and Figure 3 footnotes.

Key Specifications

Pinout & Package

FS32K146HAT0MMHR is packaged in a 100-pin LQFP (Lead-Free, RoHS-compliant) with 0.5 mm pitch and exposed thermal pad. This package supports full peripheral availability including all 3 FlexCAN interfaces, dual ADCs, Ethernet MAC, and 156 GPIOs (pin-count constrained by package variant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K146HAT0MMHR, FS32K144HAT0MLHT reduces memory and peripheral count for cost-sensitive applications, while FS32K148UAT0MLHT trades thermal rating for enhanced connectivity - making FS32K146HAT0MMHR the balanced choice for under-hood ASIL-B systems needing full feature set and extended temperature operation.

Availability

FS32K146HAT0MMHR is available at Aetrix Electronics and suitable for automotive body control, electric power steering, and battery management systems requiring stable component supply, long lifecycle support, and AEC-Q100 qualification.

Supply support for FS32K146HAT0MMHR 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, and IoT applications, delivering secure, energy-efficient, and scalable silicon solutions.

The S32K1xx family - including FS32K146HAT0MMHR - was engineered specifically for automotive electronic control units requiring ASIL-B compliance, functional safety, and real-time performance in harsh environments.

FAQ

What is the maximum operating frequency of the FS32K146HAT0MMHR and under what conditions?

The FS32K146HAT0MMHR achieves up to 112 MHz in HSRUN mode, confirmed in the S32K1xx Data Sheet Rev. 15 Section 1.1. This frequency requires VDD ≥ 2.7 V and ambient temperature ≤ +125 °C. However, CSEc security operations and EEPROM emulation must be executed in RUN mode (80 MHz), as HSRUN mode triggers error flags during those functions - a hard constraint defined in multiple datasheet footnotes and Figure 3 notes.

Does the FS32K146HAT0MMHR support CAN-FD, and how many interfaces are available?

Yes, the FS32K146HAT0MMHR supports CAN-FD on all three FlexCAN modules, as verified in the S32K1xx Feature Comparison (Figure 3) and Section 1.1 Communications Interfaces. Each FlexCAN module is independently configurable for classical CAN or CAN-FD operation, enabling mixed-speed networks and high-bandwidth firmware updates over CAN.

What package type and pin count does the FS32K146HAT0MMHR use?

The FS32K146HAT0MMHR uses a 100-pin LQFP package with 0.5 mm pitch and exposed thermal pad, as specified in the S32K1xx Data Sheet Section 1.1 Package and confirmed in the ordering information diagram (Figure 5). This package supports full peripheral availability including all three FlexCAN interfaces, dual ADCs, and Ethernet MAC.

Is the FS32K146HAT0MMHR qualified for automotive applications, and what safety standards does it meet?

Yes, the FS32K146HAT0MMHR is AEC-Q100 qualified and designed to support ASIL-B compliance per ISO 26262. Key safety features include ECC on flash and SRAM, System MPU enforcing memory protection at the crossbar level, CRC module, internal watchdog (WDOG), and external watchdog monitor (EWM) - all documented in Section 1.1 Safety and Security of the S32K1xx Data Sheet.

What debug interface does the FS32K146HAT0MMHR support, and is trace capability included?

The FS32K146HAT0MMHR supports Serial Wire JTAG Debug Port (SWJ-DP) with full debug, watchpoint, and trace functionality - including Debug Watchpoint and Trace (DWT), Instrumentation Trace Macrocell (ITM), Test Port Interface Unit (TPIU), and Flash Patch and Breakpoint (FPB) Unit. This is explicitly listed in Section 1.1 Debug functionality and enables real-time instruction tracing and non-intrusive profiling in production-grade development environments.