NXP Semiconductors S32K311NHT0VLFSR

Overview

S32K311NHT0VLFSR from NXP Semiconductors is an ASIL-B automotive-qualified Arm® Cortex-M7 microcontroller operating up to 120 MHz, featuring 1 MB program flash with ECC, 128 KB SRAM with ECC (including 96 KB TCM), and support for CAN FD, LPUART, LPSPI, and LPI2C interfaces. It targets body control modules, gateway ECUs, and battery management systems in harsh automotive environments.

For engineers reviewing the S32K311NHT0VLFSR datasheet, S32K311NHT0VLFSR pinout, S32K311NHT0VLFSR application, or S32K311NHT0VLFSR equivalent, key selection factors include its 120 MHz Cortex-M7 core with FPU/DSP, -40 °C to 125 °C ambient operation, QuadSPI interface, dual 24-channel 12-bit ADCs, and ASIL-B functional safety compliance.

Technical Context

The S32K311NHT0VLFSR implements a single-core Arm Cortex-M7 CPU with Thumb®-2 ISA, integrated Single Precision FPU and DSP extensions, and configurable NVIC. Its memory subsystem includes instruction and data caches plus TCM RAM optimized for low-latency real-time control loops.

Clock generation relies on multiple oscillators: 8–40 MHz FXOSC, 48 MHz FIRC, 32 kHz SIRC, and 32 kHz SXOSC, all feeding into the System PLL for precise frequency synthesis. Power management uses RUN and STANDBY modes with peripheral-specific clock gating to minimize active power while retaining wakeup capability on up to 60 pins.

Key Specifications

Pinout & Package

Package: HDQFP100 (100-pin Heat Sink Quad Flat Package) with exposed thermal pad - provides mechanical stability and enhanced thermal dissipation for automotive PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S32K311NHT0VLFSR, the S32K312 offers greater memory headroom for future feature expansion, while the S32K310 reduces cost and power in resource-constrained applications - all three share identical HDQFP100 packaging and peripheral pin compatibility.

Availability

S32K311NHT0VLFSR is available at Aetrix Electronics and suitable for automotive body control modules, gateway ECUs, and battery management systems requiring stable component supply across long production lifecycles.

Supply support for S32K311NHT0VLFSR 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 S32K3xx product line extends NXP's automotive MCU portfolio with Arm Cortex-M7 cores, targeting ASIL-B and ASIL-D applications in electric vehicles, chassis systems, and domain controllers - emphasizing real-time determinism, security, and scalability.

FAQ

What is the maximum operating frequency of the S32K311NHT0VLFSR?

The S32K311NHT0VLFSR operates at a maximum CPU frequency of 120 MHz. This speed is achieved using the System PLL driven by the 8–40 MHz Fast External Oscillator (FXOSC) or the 48 MHz Fast Internal RC oscillator (FIRC). The 120 MHz rating is validated across the full -40 °C to 125 °C ambient temperature range and 2.97 V to 5.5 V supply voltage, ensuring consistent real-time performance in automotive environments. S32K311NHT0VLFSR maintains this frequency without throttling under specified thermal and electrical conditions.

Does the S32K311NHT0VLFSR support CAN FD?

Yes, the S32K311NHT0VLFSR supports CAN FD on all FlexCAN modules, enabling data rates up to 5 Mbps and payloads up to 64 bytes per frame. It implements ISO 11898-1:2015 compliant transceiver interface logic and includes built-in bit rate switching, CRC calculation, and error confinement features. S32K311NHT0VLFSR's FlexCAN modules operate independently and can be configured for classic CAN or CAN FD mode via register settings - no external transceiver changes are needed beyond standard CAN FD-compliant physical layer components.

What safety certifications does the S32K311NHT0VLFSR hold?

The S32K311NHT0VLFSR is certified to ASIL-B per ISO 26262:2018 for automotive safety applications. It incorporates hardware safety mechanisms including ECC on all memories, Error Detection Code (EDC) on data paths, dual SWT timers, CRC acceleration, and centralized fault collection via FCCU. S32K311NHT0VLFSR also supports lockstep configurations in higher-series variants but operates as a single-core device in its default configuration - all safety documentation and FMEDA reports are provided by NXP for integration into safety case development.

Which package type is used for the S32K311NHT0VLFSR?

The S32K311NHT0VLFSR is packaged in a HDQFP100 (Heat Sink Quad Flat Package with 100 leads and exposed thermal pad). This RoHS-compliant package measures 14 mm × 14 mm with 0.5 mm pitch, offering mechanical robustness and thermal performance suited for automotive under-hood applications. S32K311NHT0VLFSR shares pin compatibility with other S32K3xx devices in the same HDQFP100 footprint, enabling scalable design reuse across memory and peripheral variants.

Does the S32K311NHT0VLFSR include hardware cryptographic acceleration?

Yes, the S32K311NHT0VLFSR integrates the Hardware Security Engine (HSE-B), which provides dedicated acceleration for AES-128/256, RSA up to 4096-bit, and ECC up to 521-bit operations. It supports secure boot, key derivation, and firmware authentication using tamper-resistant internal flash storage for cryptographic keys. S32K311NHT0VLFSR's HSE-B complies with EVITA Full requirements and includes side-channel attack protections - all cryptographic services are accessible via standardized APIs documented in NXP's S32K3xx Security Reference Manual.