NXP Semiconductors FS32K148HET0MLQR

Overview

FS32K148HET0MLQR 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 performance, and integrated CSEc security engine. It supports CAN-FD, Ethernet (10/100 Mbps with IEEE 1588), dual SAI, FlexIO, and operates from -40 °C to +125 °C in 100-pin LQFP package - deployed in vehicle body control modules requiring ASIL-B functional safety compliance.

For engineers reviewing the FS32K148HET0MLQR datasheet, FS32K148HET0MLQR pinout, FS32K148HET0MLQR application, or FS32K148HET0MLQR equivalent, key selection considerations include its 100-pin LQFP footprint, HSRUN/RUN mode voltage constraints (2.97 V min with PLL active), CSEc execution restrictions (requires RUN mode at 80 MHz), Ethernet MAC + IEEE 1588 timestamping capability, and FlexCAN module count with FD support.

Technical Context

The FS32K148HET0MLQR implements a dual-core-capable architecture with Arm Cortex-M4F core featuring single-precision FPU, DSP extensions, and NVIC, paired with configurable power management supporting five modes (HSRUN, RUN, STOP, VLPR, VLPS). Its memory subsystem includes ECC-protected 2 MB flash, 256 KB SRAM, 64 KB FlexNVM for EEPROM emulation, and 4 KB FlexRAM.

Peripherals are routed via AXBS-Lite crossbar switch and managed by eDMA (16-channel) with DMAMUX. Safety mechanisms include System MPU (crossbar-level memory protection), CRC module, WDOG/EWM watchdogs, and hardware-accelerated CSEc compliant with SHE specification - all validated for ASIL-B system integration per ISO 26262.

Key Specifications

Pinout & Package

FS32K148HET0MLQR is housed in a 100-pin LQFP package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow NXP's standardized S32K14x signal mapping; all I/O pins support interrupt capability and configurable pull-up/down.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FS32K146HAT0MLQR, FS32K148HET0MLQR adds Ethernet+IEEE 1588, dual SAI, and 1 MB more flash - enabling scalable gateway functionality. Against FS32K148HET1MLQR, it trades +150 °C rating for 2.7 V operation and broader voltage flexibility, better suiting mixed-supply automotive subsystems.

Availability

FS32K148HET0MLQR is available at Aetrix Electronics and suitable for automotive body control modules, domain gateways, electric power steering units, and ADAS sensor hubs requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 qualification.

Supply support for FS32K148HET0MLQR 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 functional safety and automotive-grade reliability.

The S32K1xx family - including FS32K148HET0MLQR - was designed specifically for automotive electronic control units requiring ASIL-B compliance, hardware security, and real-time deterministic performance in harsh environments.

FAQ

What is the minimum supply voltage required for FS32K148HET0MLQR to operate at full 112 MHz speed?

The FS32K148HET0MLQR requires a minimum supply voltage of 2.97 V when operating in HSRUN mode at 112 MHz with the SPLL engaged. At lower voltages (down to 2.7 V), the device can run only from the FIRC oscillator at reduced frequency - this is explicitly documented in the S32K1xx Data Sheet Rev. 15, Table 3 Note [3]. Operation below 2.97 V while using PLL will result in undefined behavior or failure to sustain HSRUN mode.

Does FS32K148HET0MLQR support CAN-FD on all three FlexCAN modules?

Yes, FS32K148HET0MLQR supports CAN-FD on all three FlexCAN modules, as confirmed in the S32K1xx Feature Comparison (Figure 3) and Ordering Information (Figure 5), where ordering option "E" (Ethernet + SAI) includes full CAN-FD capability across all FlexCAN instances. Each module independently supports bit rates up to 5 Mbps and payload lengths up to 64 bytes in FD mode.

Can CSEc security functions be executed while FS32K148HET0MLQR runs in HSRUN mode?

No. The FS32K148HET0MLQR documentation explicitly states that CSEc (Cryptographic Services Engine) operations - including AES encryption, key generation, and secure boot verification - are prohibited in HSRUN mode (112 MHz). Attempting such operations triggers error flags. The device must transition to RUN mode (80 MHz) to execute any CSEc command, as noted in multiple sections of the datasheet (Features, Block Diagram footnotes, and Ordering Info).

What is the maximum number of ADC channels supported by FS32K148HET0MLQR?

The FS32K148HET0MLQR integrates two independent 12-bit SAR ADC modules, each supporting up to 32 analog input channels - for a total of 64 configurable ADC inputs. Channel selection is managed via hardware trigger multiplexing (TRGMUX), and both ADCs support simultaneous sampling and window comparison features critical for motor control applications.

Is FS32K148HET0MLQR pin-compatible with other S32K14x devices in the same package?

Yes. According to the S32K1xx Data Sheet Section 3.1 ("Feature comparison"), all S32K1xx devices sharing the same package (e.g., 100-pin LQFP) are pin-to-pin compatible. FS32K148HET0MLQR uses the 100-pin LQFP variant and maintains identical pinout with other S32K14x family members in that package, enabling hardware reuse across performance tiers while preserving layout and interconnect integrity.