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NXP Semiconductors S32K342EHT0MPBST
- Part No.:
- S32K342EHT0MPBST
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 172-QFP
- Datasheet:
-
S32K342EHT0MPBST.pdf
- Description:
- IC MCU 32BIT2 2MB FLASH 172QFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
S32K342EHT0MPBST from NXP Semiconductors is an ASIL-D-certified, lockstep dual-core Arm Cortex-M7 microcontroller designed for automotive safety-critical applications. It operates at up to 160 MHz, integrates 2 MB program flash with ECC, 256 KB SRAM with ECC (including 192 KB TCM), and supports CAN FD, Ethernet AVB/TSN, and QuadSPI for external memory expansion. It targets body control modules, gateway ECUs, and domain controllers requiring functional safety compliance and real-time deterministic performance.
For engineers reviewing the S32K342EHT0MPBST datasheet, S32K342EHT0MPBST pinout, S32K342EHT0MPBST application, or S32K342EHT0MPBST equivalent, key selection criteria include ASIL-D lockstep architecture, 2 MB flash with RWW A/B swap capability, integrated HSE-B security engine, 4-channel FlexCAN with CAN FD, and support for 100 Mbps Ethernet with TSN timing precision.
Technical Context
The S32K342EHT0MPBST implements a dual-core Arm Cortex-M7 in lockstep configuration with hardware redundancy, enabling fault detection per ISO 26262 ASIL-D requirements. Its memory subsystem includes ECC-protected 2 MB flash and 256 KB SRAM (192 KB TCM), ensuring data integrity and low-latency CPU access for real-time control loops.
It integrates safety mechanisms including centralized error detection (FCCU), memory BIST, clock/voltage monitors, and a dedicated Safety MCU (Cortex-M0+) managing system-level safety state transitions. Communication interfaces include four FlexCAN modules with CAN FD, one 100 Mbps Ethernet MAC with AVB/TSN support, and QuadSPI capable of 480 Mbps with 4-bit data width.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Dual Arm Cortex-M7 cores in lockstep for ASIL-D compliance and fault detection |
| CPU Frequency | Up to 160 MHz - enables high-throughput real-time processing with zero-wait TCM |
| Flash Memory | 2 MB program flash with ECC and RWW A/B swap - supports safe OTA updates |
| SRAM | 256 KB SRAM with ECC, including 192 KB TCM - ensures deterministic latency for control algorithms |
| Operating Voltage | 2.97 V to 5.5 V - compatible with automotive 3.3 V and 5 V supply domains |
| Temperature Range | -40 °C to +125 °C - qualified for under-hood and chassis-mounted automotive environments |
| Functional Safety | ISO 26262 ASIL-D compliant - certified via hardware redundancy, self-test, and centralized error management |
| Security Engine | HSE-B with AES-256, RSA-4096, ECC-521 acceleration - provides secure boot, key provisioning, and side-channel protection |
Pinout & Package
Package: MAPBGA437 (17 × 17 mm, 0.8 mm pitch) with exposed pad - optimized for thermal dissipation in automotive ECU designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA_3P3 | Analog power supply | 3.3 V analog domain input with dedicated filtering for ADC/CMP reference stability |
| VBAT | Backup power rail | Supports RTC and wakeup logic during main power loss (e.g., ignition-off battery monitoring) |
| ENET0_RXD0 / ENET0_TXD0 | Ethernet PHY interface | Differential pair for 100 Mbps AVB/TSN Ethernet with integrated termination and slew rate control |
| CAN0_TX / CAN0_RX | FlexCAN channel 0 interface | High-speed differential signaling supporting CAN FD up to 5 Mbps with built-in transceiver biasing |
| QSPI0_SCK / QSPI0_IO0–3 | QuadSPI bus signals | 4-bit data width, up to 480 Mbps - enables direct XIP execution from external flash or RAM expansion |
| SWD_CLK / SWD_DIO | Serial Wire Debug interface | 2-pin debug port supporting full CoreSight trace, SWO, and flash patching without JTAG pins |
Key Features
| Feature | Design Value |
|---|---|
| Lockstep Dual Cortex-M7 | Hardware-synchronized execution with comparison logic for continuous fault detection per ASIL-D |
| RWW Flash with A/B Swap | Enables seamless firmware updates without halting real-time operation - critical for OTA deployments |
| HSE-B Security Engine | Offloads cryptographic operations (AES-256, RSA-4096) and enforces secure boot chain with immutable root-of-trust |
| TSN-Equipped Ethernet | IEEE 802.1AS time synchronization and 802.1Qbv time-aware shaping - supports deterministic networked control |
| FlexCAN with CAN FD | Four independent channels, each supporting up to 5 Mbps data phase and 64-byte payloads - replaces legacy CAN gateways |
| BCTU Cross-Trigger Unit | Hardware-synchronized event routing between ADC, timers, and PWM - eliminates software latency in motor control loops |
Applications
| Body Control Module (BCM) | Automotive Gateway ECU |
|---|---|
Use Scenario: Centralized vehicle power distribution, lighting control, door/window actuation, and sensor aggregation across LIN/CAN networks. IC Role / Device Role / Timing Role: Primary safety-certified controller executing ASIL-B/D software partitions, managing power states, and coordinating cross-domain communication. Use Value: Lockstep M7 cores and ECC memory ensure fail-safe operation during voltage transients; 4 FlexCAN channels consolidate legacy bus traffic into a single domain controller. |
Use Scenario: High-bandwidth bridging between CAN FD, LIN, Ethernet TSN, and FlexIO-emulated protocols in zonal architectures. IC Role / Device Role / Timing Role: Network orchestrator performing protocol translation, firewalling, and time-synchronized message routing with sub-microsecond jitter. Use Value: Integrated 100 Mbps Ethernet with AVB/TSN and QuadSPI expansion enables deterministic inter-zone communication while reducing external PHY count. |
| Electric Power Steering (EPS) Support MCU | Domain Controller for ADAS Peripherals |
Use Scenario: Secondary controller handling EPS motor position feedback, torque sensing, and fail-operational diagnostics alongside primary MCU. IC Role / Device Role / Timing Role: Safety monitor executing independent sensor fusion and watchdog supervision using BCTU-triggered ADC sampling and eMIOS PWM generation. Use Value: 3×12-bit ADCs with 24-channel inputs and hardware cross-triggering enable synchronized multi-axis current/voltage sensing at ≤1 µs latency. |
Use Scenario: Aggregation and preprocessing of radar, camera, and ultrasonic sensor data before forwarding to central ADAS processor. IC Role / Device Role / Timing Role: Real-time I/O concentrator with FlexIO emulating SENT, PWM, and SPI for proprietary sensor interfaces. Use Value: 32-channel FlexIO with configurable logic units offloads protocol handling from main CPU, preserving bandwidth for safety-critical tasks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive safety microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S32K344EHT0MPBST | 4 MB flash, same lockstep dual-core M7 @ 160 MHz, identical peripheral set and package | Higher firmware storage capacity for complex middleware stacks and dual-image OTA | Select when >2 MB code space required without changing PCB layout or safety certification scope |
| S32K322EHT0MPBST | Dual independent M7 cores (no lockstep), 2 MB flash, ASIL-B rated, no HSE-B | Lacks ASIL-D certification and hardware crypto acceleration; suited for non-safety-critical compute tasks | Choose for cost-sensitive applications where functional safety is not mandated but higher throughput is needed |
Compared with S32K342EHT0MPBST, S32K344EHT0MPBST offers double flash capacity with identical safety architecture and pin compatibility, while S32K322EHT0MPBST trades ASIL-D compliance and security for raw dual-core performance in ASIL-B domains.
Availability
S32K342EHT0MPBST is available at Aetrix Electronics and suitable for automotive body control modules, gateway ECUs, and domain controllers requiring stable component supply, long-term lifecycle support, and ASIL-D qualification documentation.
Supply support for S32K342EHT0MPBST 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 functional safety and automotive-grade reliability.
The S32K3xx family was developed specifically for next-generation automotive electronic control units demanding ASIL-D compliance, hardware-accelerated security, and scalable multicore performance - with the S32K342EHT0MPBST targeting mid-tier domain controllers balancing safety, memory, and interface density.
FAQ
What is the functional safety certification level of the S32K342EHT0MPBST?
The S32K342EHT0MPBST is certified to ISO 26262 ASIL-D at the hardware level, supported by lockstep dual Cortex-M7 cores, ECC on all memories, centralized error management (FCCU), and integrated safety mechanisms including BIST, clock/voltage monitors, and a dedicated safety MCU. This enables its use in safety-critical automotive applications such as brake-by-wire and steering control where failure modes must be detected within defined time intervals. The S32K342EHT0MPBST delivers this assurance without requiring external safety monitors.
Does the S32K342EHT0MPBST support CAN FD, and how many channels are available?
Yes, the S32K342EHT0MPBST supports CAN FD on four independent FlexCAN modules, each capable of data rates up to 5 Mbps and payloads up to 64 bytes. These channels operate concurrently and are fully integrated with the DMAMUX for zero-CPU-overhead message handling. This capability allows the S32K342EHT0MPBST to serve as a high-performance CAN FD gateway or domain controller, replacing multiple legacy CAN transceivers while maintaining full protocol compliance and timing determinism.
What Ethernet capabilities does the S32K342EHT0MPBST provide?
The S32K342EHT0MPBST integrates a 100 Mbps Ethernet MAC with full AVB (Audio Video Bridging) and TSN (Time-Sensitive Networking) support, including IEEE 802.1AS time synchronization and 802.1Qbv time-aware shaping. It does not include a physical layer (PHY); external 100BASE-T1 or 100BASE-TX PHYs must be used. This enables deterministic, low-jitter communication for zonal architectures and time-critical control loops - a key requirement for the S32K342EHT0MPBST in next-generation automotive networks.
How much on-chip memory does the S32K342EHT0MPBST include, and what types are supported?
The S32K342EHT0MPBST includes 2 MB of program flash memory with ECC and Read-While-Write (RWW) capability, 128 KB of data flash with ECC, and 256 KB of SRAM with ECC - of which 192 KB is tightly coupled memory (TCM) for ultra-low-latency CPU access. All memory blocks feature Error-Correcting Code protection, and the flash supports A/B swap for robust over-the-air updates. This memory architecture directly supports the S32K342EHT0MPBST's role in safety-critical, real-time automotive control applications.
Is the S32K342EHT0MPBST pin-compatible with other S32K3xx devices?
Yes, the S32K342EHT0MPBST in the MAPBGA437 package shares identical pinout and signal mapping with other S32K3xx family members offered in that package option, including S32K341, S32K344, and S32K348. This enables hardware reuse across safety tiers (ASIL-B to ASIL-D) and memory variants without PCB redesign. However, pin compatibility does not imply identical peripheral enablement - features like Ethernet or additional FlexCAN channels depend on internal configuration and must be validated per device variant.
S32K342EHT0MPBST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 172-QFP
- Series:
- S32K3
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M7
- Core Size:
- 32-Bit2
- Speed:
- 160MHz
- Connectivity:
- CANbus, Ethernet, I2C, LINbuS, SAI, SENT, SPI, UART/USART
- Peripherals:
- DMA, I2S, PWM, WDT
- Number of I/O:
- -
- Program Memory Size:
- 2MB (2M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 128K x 8
- RAM Size:
- 256K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.97V ~ 5.5V
- Data Converters:
- A/D 24x12b SAR
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S32K342EHT0MPBST FAQ
1.How can I place an order for S32K342EHT0MPBST through Aetrix?
Please submit a Request for Quotation (RFQ) for S32K342EHT0MPBST 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 S32K342EHT0MPBST reliable?
The price and inventory of S32K342EHT0MPBST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S32K342EHT0MPBST is usually 5 days.
3.What payment methods are accepted for S32K342EHT0MPBST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S32K342EHT0MPBST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S32K342EHT0MPBST?
S32K342EHT0MPBST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S32K342EHT0MPBST 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 S32K342EHT0MPBST?
For technical support, including S32K342EHT0MPBST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S32K342EHT0MPBST requirements.
6.How does Aetrix verify that S32K342EHT0MPBST is sourced from the original manufacturer or authorized distributors?
All S32K342EHT0MPBST 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 S32K342EHT0MPBST meets industry standards.
7.What is the process for return or replacement of S32K342EHT0MPBST?
All S32K342EHT0MPBST units undergo pre-shipment inspection (PSI). If there is an issue with S32K342EHT0MPBST, 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 S32K342EHT0MPBST part is unused and in its original packaging.
Return procedure for S32K342EHT0MPBST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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