NXP Semiconductors FS32K144HRT0VLHR

Overview

FS32K144HRT0VLHR 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 FS32K144HRT0VLHR datasheet, FS32K144HRT0VLHR pinout, FS32K144HRT0VLHR application, or FS32K144HRT0VLHR equivalent, this page delivers verified technical context, package-specific pin mapping, safety-critical timing parameters, and validated alternative parts for ASIL-B automotive designs.

Technical Context

The FS32K144HRT0VLHR implements a dual-core-capable architecture with Arm Cortex-M4F core running up to 112 MHz in HSRUN mode (80 MHz in RUN mode), featuring single-precision FPU, DSP extensions, and configurable NVIC. 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 MPU at the crossbar switch level.

Peripheral integration targets functional safety: three FlexCAN modules (ISO 11898-1 CAN-FD), LPIT/LPTMR timers with wake-up capability, CRC and watchdog modules (WDOG + EWM), and CSEc cryptographic engine compliant with SHE specification. Power management supports five modes (HSRUN/RUN/STOP/VLPR/VLPS), with explicit mode-switching requirements for CSEc operations and EEPROM writes.

Key Specifications

Pinout & Package

FS32K144HRT0VLHR is housed in a 144-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows S32K14x family standard layout, supporting full peripheral routing including dual ADC inputs, three CAN transceiver interfaces, and 156 GPIOs (with interrupt capability on most pins).

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K144HRT0VLHR, S32K144HRT0MLHR trades peak frequency for extended temperature range, while S32K146HRT0VLHR adds Ethernet and memory capacity - both retain identical safety architecture, CSEc implementation, and automotive qualification.

Availability

FS32K144HRT0VLHR is available at Aetrix Electronics and suitable for automotive body control, electric power steering, ADAS sensor hubs, and onboard charger control requiring stable component supply across long production lifecycles.

Supply support for FS32K144HRT0VLHR 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 leader in automotive semiconductors, delivering secure, energy-efficient, and ASIL-certified MCUs for safety-critical vehicle systems.

The S32K1xx family was designed specifically for automotive electronic control units requiring ISO 26262 compliance, functional safety, and robust communication - with FS32K144HRT0VLHR targeting mid-tier ECU applications balancing performance, security, and cost.

FAQ

What is the maximum operating frequency of the FS32K144HRT0VLHR and under what conditions?

The FS32K144HRT0VLHR achieves 112 MHz in HSRUN mode, but only within its specified ambient temperature range of -40 °C to 105 °C. When executing security operations (CSEc) or EEPROM writes/erases, the device must drop to RUN mode at 80 MHz - this mode-switching is mandatory and enforced by hardware error flags if violated. The 112 MHz rating assumes stable 2.7–5.5 V supply and proper thermal management per NXP's AN5426 guidelines.

Does the FS32K144HRT0VLHR support CAN-FD, and how many instances are available?

Yes, the FS32K144HRT0VLHR integrates three independent FlexCAN modules, each supporting CAN-FD (ISO 11898-1 FD) with bit rates up to 5 Mbps. All three modules are fully functional in the 144-pin LQFP package and support flexible message filtering, hardware timestamping, and loopback self-test modes - enabling redundant CAN networks or mixed legacy/FD communication in domain controllers.

How does the CSEc (Cryptographic Services Engine) function in the FS32K144HRT0VLHR?

The CSEc in FS32K144HRT0VLHR implements the Secure Hardware Extension (SHE) specification with hardware-accelerated AES-128 encryption/decryption, SHA-256 hashing, and true random number generation. It supports secure boot authentication, key provisioning, and runtime cryptographic services - but requires operation in RUN mode (80 MHz), as HSRUN mode (112 MHz) disables CSEc access to prevent timing side-channel attacks and ensure deterministic execution.

What memory protection mechanisms are implemented in the FS32K144HRT0VLHR?

The FS32K144HRT0VLHR uses NXP's system MPU - a crossbar-level memory protection unit that assigns access rights (read/write/execute) to each master (CPU, DMA, Ethernet) for every protected memory region. Unlike Arm's core MPU, this system MPU covers all bus masters and enforces protection before memory transactions reach flash or SRAM. Combined with ECC on both memories, it satisfies ASIL-B requirements for memory integrity and fault containment.

Is the FS32K144HRT0VLHR pin-compatible with other S32K14x devices?

Yes, all S32K14x devices sharing the same package variant - including the 144-pin LQFP used by FS32K144HRT0VLHR - are pin-to-pin compatible. This allows hardware reuse across performance tiers (e.g., migrating from S32K142 to FS32K144HRT0VLHR) without PCB redesign, provided peripheral usage aligns with the target device's feature set as defined in the IO Signal Description multiplexing tables.