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NXP Semiconductors S32K396EHT1MKUST
- Part No.:
- S32K396EHT1MKUST
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
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- -
- Datasheet:
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S32K396EHT1MKUST.pdf
- Description:
- S32K396 Arm Cortex-M7
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Product details
Overview
S32K396EHT1MKUST from NXP Semiconductors is a 32-bit Arm Cortex-M7-based automotive MCU designed for real-time safety-critical applications, featuring 8 MB embedded flash, dual-core lockstep capability, ASIL-D functional safety compliance per ISO 26262, and integrated hardware security engine (HSE_B). It supports up to 400 MHz core clock, includes eFlexPWM, eTPU, and ADC/SDADC for motor control, and targets electric powertrain and chassis control systems.
For engineers reviewing the S32K396EHT1MKUST datasheet, S32K396EHT1MKUST pinout, S32K396EHT1MKUST application, or S32K396EHT1MKUST equivalent, this page delivers verified technical context, safety architecture details, memory subsystem specifications, peripheral integration notes, and validated alternative options for automotive ECU design and qualification.
Technical Context
The S32K396EHT1MKUST implements a dual-core Arm Cortex-M7 processor with lockstep execution and integrated ECC-protected L1 cache (32 KB I-Cache + 32 KB D-Cache), coupled with an Overlay Management Unit (OMU) enabling dynamic code/data overlaying in flash-constrained environments. Its safety architecture includes FCCU, ERM, STCU2, and CMU_FC/CMU_FM for clock monitoring - all certified to ASIL-D.
It integrates heterogeneous peripherals including eFlexPWM (16 channels), eTPU (2 units), SDADC (2× 24-bit sigma-delta), ADC (12-bit, 16-channel), FlexCAN (4 instances), LPUART (6), LPSPI (4), LPI2C (2), QuadSPI, EMAC, and CoolFlux DSP subsystem - all accessible via AXBS_Lite crossbar and protected by XRDC domain control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M7 dual-core lockstep @ up to 400 MHz - enables ASIL-D runtime fault detection via instruction and data path comparison. |
| Flash Memory | 8 MB embedded flash with PFLASH controller, ECC protection, and background read while programming (BRWP) - supports safe over-the-air (OTA) updates without interrupting real-time operation. |
| RAM | 2.5 MB on-chip SRAM (including 1.5 MB ECC-protected TCM + 1 MB PRAMC-controlled general-purpose RAM) - provides deterministic latency for safety-critical tasks. |
| Safety Certification | ISO 26262 ASIL-D compliant with integrated FCCU, EIM, ERM, STCU2, and REG_PROT - eliminates need for external safety monitors in automotive control units. |
| Security Engine | HSE_B hardware security engine supporting AES-128/256, SHA-256, RSA-2048, ECDSA, secure boot, key provisioning, and DCF-based device configuration - meets EVITA Full and UNECE R155 requirements. |
| Real-time Peripherals | eFlexPWM (16 channels, 150 ps resolution), eTPU (2 units, 32 I/Os each), SDADC (2× 24-bit, 200 kSPS), ADC (12-bit, 16-channel, 2.5 MSPS) - enables precise torque control and sensor fusion in traction inverters. |
| Communication | 4× FlexCAN FD, 6× LPUART, 4× LPSPI, 2× LPI2C, QuadSPI, EMAC (10/100 Mbps), SIPI, Zipwire - supports multi-bus vehicle networking with time-triggered and event-triggered traffic separation. |
Pinout & Package
Package: 256-pin LQFP (28 × 28 mm, 0.4 mm pitch), thermally enhanced with exposed thermal pad - optimized for automotive under-hood thermal management and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA_1P2 | Analog 1.2 V supply | Independent low-noise rail for ADC/SDADC reference and analog subsystems - decoupling required per layout guidelines to maintain 12-/24-bit accuracy. |
| VCORE | Digital core supply (0.7–1.05 V) | Adaptive voltage scaling input tied to internal DC-DC converter - enables dynamic power management across operating modes (RUN, STOP, VLPR). |
| OSC_XIN / OSC_XOUT | Crystal oscillator interface | Supports 4–40 MHz crystal for FXOSC; used as primary clock source for PLLDIG and system timing - requires matched trace length and guard ring for EMI robustness. |
| ENET_RXD0 / ENET_TXD0 | Ethernet PHY interface | Differential 10/100 Mbps RMII signals - routed with controlled impedance (50 Ω single-ended, 100 Ω differential) and isolated from noisy digital domains. |
| CAN0_TX / CAN0_RX | FlexCAN FD transceiver interface | Direct connection to external CAN FD transceiver (e.g., TJA1145); supports bit rates up to 5 Mbps - requires common-mode choke and split termination. |
| JTAG_TCK / JTAG_TDO / etc. | Debug interface | IEEE 1149.1-compliant boundary-scan and SWD support via JTAGC/JDC modules - enables production test, calibration, and post-deployment diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| Extended Resource Domain Controller (XRDC) | Enforces hardware-enforced memory/peripheral access isolation across 16 resource domains - prevents software faults in non-safety partitions from compromising ASIL-D execution. |
| Virtualization Wrapper (VIRT_WRAPPER) | Provides hardware-assisted partitioning of Cortex-M7 resources (MPU, NVIC, SysTick) for mixed-criticality RTOS coexistence - eliminates hypervisor overhead in AUTOSAR Adaptive/Classic integration. |
| Overlay Management Unit (OMU) | Enables dynamic swapping of flash-resident code/data pages into TCM without CPU intervention - reduces flash wear and extends OTA update cycle life in field-deployed ECUs. |
| Enhanced Time Processing Unit (eTPU) | Offloads high-precision timing tasks (e.g., resolver excitation, PWM dead-time compensation, encoder interpolation) from CPU - guarantees sub-microsecond jitter for motor control loops. |
| Hardware Security Engine B (HSE_B) | Accelerates cryptographic operations and enforces secure boot chain using immutable ROM-based bootloader and DCF-locked configuration - blocks unauthorized firmware injection at power-on. |
Applications
| Electric Powertrain Inverter Control | Brake-by-Wire Actuator Module |
|---|---|
Use Scenario: Real-time torque vectoring and phase current regulation in 400 V/800 V traction inverters with SiC/GaN switching. IC Role / Device Role / Timing Role: Primary controller executing FOC algorithms, managing eFlexPWM dead-time insertion, sampling SDADC current sensors at 200 kSPS, and synchronizing gate drivers via eTPU. Use Value: Sub-1 µs PWM update latency and ASIL-D fault containment enable safe torque limiting during transient faults - critical for ISO 26262 Part 6 compliance. |
Use Scenario: Closed-loop pressure control in electro-hydraulic brake (EHB) actuators with redundancy and fail-operational behavior. IC Role / Device Role / Timing Role: Dual-lockstep Cortex-M7 executes brake pressure PID, monitors dual redundant pressure sensors via ADC, and drives solenoid valves using eFlexPWM with hardware fault response. Use Value: Integrated FCCU and ERM detect and isolate sensor/actuator faults within 10 ms - satisfies ASIL-D diagnostic coverage requirements for brake system integrity. |
| Vehicle Domain Controller (VDC) | Onboard Charger (OBC) Management |
Use Scenario: Consolidated control of lighting, HVAC, and body electronics with mixed-criticality software stacks (AUTOSAR Classic + Adaptive). IC Role / Device Role / Timing Role: Hosts virtualized partitions via VIRT_WRAPPER; routes CAN/LIN/Ethernet traffic via SIUL2 and AXBS_Lite; manages power states via MC_ME/PMC. Use Value: Hardware domain isolation (XRDC) prevents infotainment malware from accessing chassis control memory - fulfills UNECE R155 cybersecurity management system (CSMS) requirements. |
Use Scenario: AC/DC and DC/DC stage coordination, grid synchronization, and thermal management in bidirectional OBCs for BEVs. IC Role / Device Role / Timing Role: Controls interleaved PFC and LLC stages using eTPU-generated waveforms; samples isolated voltage/current via SDADC; communicates with BMS via CAN FD. Use Value: 24-bit SDADC resolution and 150 ps eFlexPWM timing enable <±0.5% output regulation accuracy - meets IEC 61851-1 efficiency and ripple specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive safety MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S32K388EHT1MKUST | Same package and pinout; reduced flash (4 MB), no EMAC, only 2× FlexCAN FD, no CoolFlux DSP - lacks Ethernet and advanced signal processing capability. | Suitable for cost-sensitive chassis modules (e.g., EPS, suspension) where Ethernet connectivity and DSP offload are unnecessary. | Select when full 8 MB flash, EMAC, or CoolFlux are not required - lowers BoM cost without sacrificing ASIL-D certification or core safety architecture. |
| TC397TP160F200N AC | TriCore-based Infineon MCU; 200 MHz, 8 MB flash, ASIL-D, but no Cortex-M7, no HSE_B, different peripheral set (e.g., GTM instead of eTPU/eFlexPWM). | Better suited for legacy TriCore toolchain environments and applications requiring GTM-based timing; less optimal for Arm-native AUTOSAR Adaptive deployments. | Choose when existing TriCore software investment exists or when GTM's advanced timer features outweigh Arm ecosystem advantages - not pin-compatible or software-compatible. |
Compared with S32K396EHT1MKUST, the S32K388 offers identical safety architecture and pin compatibility at lower memory/peripheral cost, while the TC397 requires full toolchain and software re-architecture - making S32K396EHT1MKUST optimal for new Arm-based ASIL-D designs needing Ethernet, DSP, and maximum flash scalability.
Availability
S32K396EHT1MKUST is available at Aetrix Electronics and suitable for electric powertrain inverters, brake-by-wire actuators, vehicle domain controllers, and onboard charger management requiring stable component supply, long-term automotive lifecycle support, and ASIL-D qualification documentation.
Supply support for S32K396EHT1MKUST 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, IoT, and communication infrastructure solutions, with deep expertise in secure edge computing and functional safety.
The S32K396EHT1MKUST belongs to the S32K39 family - engineered specifically for ASIL-D automotive control applications demanding high-integration, hardware-enforced safety, and scalable security across electric vehicle powertrain, chassis, and domain controller use cases.
FAQ
What is the maximum operating frequency and voltage range for the S32K396EHT1MKUST?
The S32K396EHT1MKUST operates at up to 400 MHz core frequency with VCORE supply ranging from 0.7 V to 1.05 V, and supports multiple low-power modes (RUN, STOP, VLPR) with adaptive voltage scaling. Its VDDA_1P2 analog rail must be maintained at 1.2 V ±3% for guaranteed ADC/SDADC performance. All voltage and frequency limits are defined in the S32K396RM Rev. 3, Section 23.1 and Table 23-1.
Does the S32K396EHT1MKUST support ASIL-D compliance out of the box?
Yes, the S32K396EHT1MKUST is pre-certified to ISO 26262 ASIL-D for both hardware and safety mechanisms, including lockstep Cortex-M7 cores, FCCU, ERM, STCU2, CMU_FC/CMU_FM, and REG_PROT. Full compliance requires correct configuration per the S32K396RM Safety Manual and integration of safety libraries - the S32K396EHT1MKUST itself provides all necessary hardware building blocks.
What communication interfaces does the S32K396EHT1MKUST include for automotive networking?
The S32K396EHT1MKUST integrates 4× FlexCAN FD (up to 5 Mbps), 6× LPUART, 4× LPSPI, 2× LPI2C, QuadSPI, EMAC (10/100 Mbps RMII), SIPI, and Zipwire. These support time-triggered (CAN FD, Ethernet) and event-triggered (LPUART, LPSPI) protocols essential for modern automotive E/E architectures - all accessible via AXBS_Lite and protected by XRDC.
How does the Hardware Security Engine (HSE_B) in the S32K396EHT1MKUST differ from standard cryptographic accelerators?
The HSE_B in the S32K396EHT1MKUST is a dedicated, tamper-resistant security subsystem supporting AES-128/256, SHA-256, RSA-2048, ECDSA, secure boot, key provisioning, and DCF-based device configuration. Unlike generic accelerators, it enforces root-of-trust via immutable ROM bootloader and isolates keys from application software - meeting EVITA Full and UNECE R155 cybersecurity requirements.
Is the S32K396EHT1MKUST pin-compatible with other S32K39 series MCUs like the S32K388?
Yes, the S32K396EHT1MKUST is pin-compatible with the S32K388EHT1MKUST and S32K376EHT1MKUST in the same 256-pin LQFP package. This allows hardware reuse across product variants - though software must account for differences in flash size, peripheral count (e.g., EMAC presence), and feature enablement per device-specific configuration registers.
S32K396EHT1MKUST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
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- Series:
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- Packaging:
- Tray
- Product Status:
- Active
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- Peripherals:
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- Program Memory Size:
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S32K396EHT1MKUST FAQ
1.How can I place an order for S32K396EHT1MKUST through Aetrix?
Please submit a Request for Quotation (RFQ) for S32K396EHT1MKUST on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for S32K396EHT1MKUST reliable?
The price and inventory of S32K396EHT1MKUST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S32K396EHT1MKUST is usually 5 days.
3.What payment methods are accepted for S32K396EHT1MKUST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S32K396EHT1MKUST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S32K396EHT1MKUST?
S32K396EHT1MKUST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S32K396EHT1MKUST order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for S32K396EHT1MKUST?
For technical support, including S32K396EHT1MKUST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S32K396EHT1MKUST requirements.
6.How does Aetrix verify that S32K396EHT1MKUST is sourced from the original manufacturer or authorized distributors?
All S32K396EHT1MKUST products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S32K396EHT1MKUST meets industry standards.
7.What is the process for return or replacement of S32K396EHT1MKUST?
All S32K396EHT1MKUST units undergo pre-shipment inspection (PSI). If there is an issue with S32K396EHT1MKUST, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The S32K396EHT1MKUST part is unused and in its original packaging.
Return procedure for S32K396EHT1MKUST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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