NXP Semiconductors FS32K144HRT0VLHT

Overview

FS32K144HRT0VLHT 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 FS32K144HRT0VLHT datasheet, FS32K144HRT0VLHT pinout, FS32K144HRT0VLHT application, or FS32K144HRT0VLHT equivalent, this page delivers verified specifications, package mapping, functional alternatives, and design-critical timing/security constraints - including mandatory RUN-mode execution for CSEc operations and EEPROM emulation.

Technical Context

The FS32K144HRT0VLHT implements a dual-core-capable architecture with Arm Cortex-M4F core (112 MHz HSRUN / 80 MHz RUN) and optional M0+ co-processor support in family variants. Its memory subsystem includes 2 MB program flash with ECC, 64 KB FlexNVM for data flash/EEPROM emulation, and 256 KB SRAM with ECC - all protected by NXP's system-level MPU at the AXBS-Lite crossbar switch.

Peripheral integration centers on safety-critical automotive interfaces: three FlexCAN modules (ISO 11898-1 CAN-FD), up to three LPSPI/LPI2C/LPUART modules with DMA, eight FlexTimer modules (64 PWM/IC/OC channels), and IEEE 1588-capable Ethernet MAC. Clocking relies on SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with mode-specific constraints - e.g., CSEc and EEPROM writes require RUN mode (80 MHz), not HSRUN.

Key Specifications

Pinout & Package

FS32K144HRT0VLHT is housed in a 144-pin LQFP package (16 × 16 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows NXP's standardized S32K14x footprint, supporting full peripheral routing including three independent CAN transceivers, dual ADC inputs, and 156 GPIOs (144 usable in this package).

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K144HRT0VLHT, the S32K144HRT0MLHT trades peak frequency headroom for extended temperature range, while the S32K146HRT0VLHT adds Ethernet and SRAM capacity at the cost of board area and BOM complexity - making FS32K144HRT0VLHT the optimal balance for mid-tier automotive control nodes requiring security, CAN-FD, and real-time ADC/PWM without over-provisioning.

Availability

FS32K144HRT0VLHT is available at Aetrix Electronics and suitable for body control modules, electric power steering units, and ADAS sensor hubs requiring stable component supply across automotive production lifecycles.

Supply support for FS32K144HRT0VLHT 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 markets, with deep expertise in ASIL-certified microcontrollers and hardware security.

The S32K1xx product line was designed specifically for automotive electronic control units requiring functional safety (ISO 26262), security (SHE/CSEc), and real-time performance - targeting body, chassis, and ADAS domains.

FAQ

What is the maximum operating frequency of the FS32K144HRT0VLHT, and under what conditions is it guaranteed?

The FS32K144HRT0VLHT achieves 112 MHz in HSRUN mode, guaranteed across -40 °C to +105 °C ambient temperature with 2.7–5.5 V supply. However, CSEc cryptographic operations and EEPROM emulation must execute in RUN mode (80 MHz) - attempting them at 112 MHz triggers error flags and requires mode transition. This constraint is enforced in hardware and documented in the S32K1xx Data Sheet Rev. 15.

Does the FS32K144HRT0VLHT support CAN-FD, and how many CAN interfaces does it include?

Yes, the FS32K144HRT0VLHT integrates three FlexCAN modules, each supporting ISO 11898-1 CAN-FD with data rates up to 5 Mbps. All three controllers operate independently with dedicated message buffers, enabling concurrent communication on powertrain, chassis, and body networks - confirmed in the S32K1xx Feature Comparison table and supported by pin-mapped CAN0–CAN2 signals in the 144-pin LQFP package.

What memory protection mechanisms are implemented in the FS32K144HRT0VLHT?

The FS32K144HRT0VLHT employs NXP's system-level Memory Protection Unit (MPU) at the AXBS-Lite crossbar switch - not the Arm core MPU - granting per-master (CPU, DMA, Ethernet) access rights to memory regions. Combined with ECC on 2 MB flash and 256 KB SRAM, and a dedicated CRC module, this satisfies ASIL-B requirements for memory integrity and unauthorized access prevention as defined in ISO 26262.

Can the FS32K144HRT0VLHT operate from a 3.3 V supply, and are there voltage limitations for analog peripherals?

Yes, the FS32K144HRT0VLHT operates from 2.7 V to 5.5 V, fully supporting 3.3 V nominal supply. However, analog peripherals (ADC, CMP, DAC) require VDDA = VDD ±0.1 V and VREFH ≤ VDDA + 0.1 V - meaning at 3.3 V, VREFH must not exceed 3.4 V. These constraints ensure specified 12-bit ADC accuracy and comparator linearity, per Table 3 in the S32K1xx Data Sheet.

What debug interfaces does the FS32K144HRT0VLHT support, and are they accessible in all power modes?

The FS32K144HRT0VLHT supports Serial Wire Debug (SWD) and JTAG via shared pins (SWD_DIO, SWD_CLK, TMS, TCK, TDO, TRST_B), with full debug visibility in RUN, HSRUN, and STOP modes. Debug Watchpoint and Trace (DWT), Instrumentation Trace Macrocell (ITM), and Flash Patch and Breakpoint (FPB) are active during active debugging - though trace output requires SWO pin and is disabled in VLPR/VLPS modes per the S32K1xx Reference Manual.