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NXP Semiconductors SPC5746CHK0AMKU6
- Part No.:
- SPC5746CHK0AMKU6
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 176-LQFP Exposed Pad
- Datasheet:
-
SPC5746CHK0AMKU6.pdf
- Description:
- IC MCU 32BIT 3MB FLASH 176LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,314
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Product details
Overview
SPC5746CHK0AMKU6 from NXP Semiconductors is a dual-core automotive microcontroller featuring a 160 MHz e200z4 CPU and an 80 MHz e200z2 CPU, 3 MB on-chip flash, 384 KB SRAM with end-to-end ECC, and integrated HSMv2 security module. It supports ISO 26262 ASIL-B functional safety and targets engine control units, transmission controllers, and battery management systems in 125°C ambient environments.
For engineers reviewing the SPC5746CHK0AMKU6 datasheet, SPC5746CHK0AMKU6 pinout, SPC5746CHK0AMKU6 application, or SPC5746CHK0AMKU6 equivalent, key selection criteria include dual-core deterministic timing, FlexCAN FD + Ethernet AVB connectivity, hardware security for secure boot, and 176-pin LQFP-EP packaging compatible with industrial-grade thermal cycling and automotive ECU board layouts.
Technical Context
The SPC5746CHK0AMKU6 implements a crossbar switch architecture enabling concurrent access to flash, SRAM, and peripherals by multiple bus masters-including both e200z4 and e200z2 cores, eDMA, and ENET. Its memory subsystem includes triple-port flash controller with three page buffers and SMPU with 32 region descriptors for fine-grained memory protection across safety-critical partitions.
Timing and clocking are managed via FMPLL with multiple oscillator inputs (FXOSC 8–40 MHz, SXOSC 32 kHz, FIRC 16 MHz, SIRC 128 kHz), RTC, and CMU for clock monitoring. The device integrates eight FlexCAN3 modules with CAN FD support, dual-channel FlexRay 2.1, and 10/100 Ethernet with IEEE 1588, AVB, and multi-queue capability-enabling time-sensitive networking in distributed vehicle architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Cores | Dual-core: 160 MHz e200z4 + 80 MHz e200z2, both supporting VLE and single-precision floating point |
| Flash Memory | 3 MB on-chip flash with ECC, triple-port controller, and Boot Assist Flash (BAF) for serial programming |
| SRAM | 384 KB distributed across three RAM ports, all protected by end-to-end SECDED ECC |
| Functional Safety | ISO 26262 ASIL-B certified; includes FCCU fault collection, SMPU, and memory BIST |
| Security | HSMv2 hardware security module with PASS lifecycle management and secure boot enforcement |
| Communication | 8 × FlexCAN FD, 4 × DSPI, 4 × I²C, 16 × LINFlexD, dual FlexRay, ENET (MII/RMII + IEEE 1588) |
| Analog Peripherals | Two ADCs (10-bit + 12-bit), three analog comparators, Cross Trigger Unit for synchronized sampling |
Pinout & Package
SPC5746CHK0AMKU6 is housed in a 176-pin LQFP-EP (exposed pad) package with 0.5 mm pitch, designed for automotive PCB thermal dissipation and mechanical robustness under vibration. Pin assignments follow NXP's standardized MPC5746C signal multiplexing scheme, supporting configurable I/O domains for FlexCAN, LIN, Ethernet, and general-purpose functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_HV_A / VDD_HV_B / VDD_HV_C | High-voltage IO supply rails | Independent 3.3 V or 5 V supplies for I/O banks; enable mixed-voltage interface design |
| VDD_LV | Core logic supply | 1.2–1.32 V core voltage rail; requires external decoupling per regulator spec (Cfp_reg = 1.32–3 µF) |
| FXOSC_IN / FXOSC_OUT | Main crystal oscillator interface | Supports 8–40 MHz external crystal; critical for FMPLL reference and system clock stability |
| SXOSC_IN / SXOSC_OUT | 32 kHz real-time clock crystal | Enables low-power RTC operation during standby; used for wake-up and timekeeping independent of main PLL |
| JTAG_TCK / JTAG_TDI / JTAG_TDO / JTAG_TMS | Nexus Class 3+ debug interface | IEEE-ISTO 5001-2008 compliant; supports real-time trace, core-level breakpoints, and safety-critical debug lockdown |
| ENET_MDC / ENET_MDIO / ENET_TXD[0:3] / ENET_RXD[0:3] | Ethernet physical layer interface | MII/RMII-compliant; enables 10/100 Mbps AVB-capable networking with IEEE 1588 timestamping |
Key Features
| Feature | Design Value |
|---|---|
| Dual-core deterministic execution | e200z4 (160 MHz) handles safety-critical control loops; e200z2 (80 MHz) manages communication stacks and diagnostics-enabling ASIL-B decomposition |
| End-to-end ECC protection | SECDED applied to all bus transactions (64-bit data + 29-bit address), covering flash, SRAM, and peripheral registers for FIT-rate reduction |
| Hardware Security Module v2 | HSMv2 provides dedicated secure boot, cryptographic acceleration (AES-128/256, SHA-256), and tamper-resistant key storage for OTA update integrity |
| Flexible clock domain isolation | FMPLL with independent clock monitor unit (CMU) allows runtime detection of oscillator failure and automatic failover to backup IRC sources |
| Automotive-grade I/O retention | I/O state preserved in Standby mode via WKPU; enables fast wake-up from ultra-low-power states without full reinitialization |
Applications
| Engine Control Unit (ECU) | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Real-time combustion timing, fuel injection, and knock control in gasoline/diesel powertrains under 125°C under-hood conditions. IC Role / Device Role / Timing Role: Primary controller executing ASIL-B safety-critical algorithms with deterministic latency via e200z4 core and eMIOS timer subsystem. Use Value: Dual-core separation isolates control loop execution from CAN FD diagnostics traffic, ensuring <5 µs jitter on 10 kHz spark timing signals. |
Use Scenario: Torque assist calculation, motor phase commutation, and torque overlay arbitration between driver input and ADAS lane-keeping commands. IC Role / Device Role / Timing Role: Safety-managed motor controller interfacing with 3-phase inverter gate drivers via PWM outputs and current-sense ADCs. Use Value: Integrated 12-bit ADC with Cross Trigger Unit synchronizes current sampling to eMIOS PWM edges, eliminating phase error in field-oriented control. |
| Battery Management System (BMS) | Vehicle Domain Controller |
Use Scenario: Cell voltage monitoring, thermal runaway detection, and SOC/SOH estimation in high-voltage traction battery packs. IC Role / Device Role / Timing Role: Secure data acquisition node with HSMv2-enforced firmware signing and encrypted CAN FD telemetry to central gateway. Use Value: Hardware-accelerated AES-256 encrypts cell voltage logs before transmission, meeting UNECE R155 cybersecurity management system (CSMS) requirements. |
Use Scenario: Centralized coordination of ADAS sensor fusion, over-the-air update orchestration, and time-synchronized actuator control across chassis, powertrain, and infotainment domains. IC Role / Device Role / Timing Role: Time-aware domain orchestrator leveraging ENET AVB and IEEE 1588 PTP for sub-microsecond clock synchronization across ECUs. Use Value: Multi-queue Ethernet with hardware timestamping enables deterministic delivery of LiDAR point clouds and camera frames at 10 Gbps-equivalent throughput. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-core automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SPC574SNC1AK0MLU6 | Same MPC574x family; single e200z4 core (160 MHz), 2 MB flash, no e200z2 companion core or HSMv2 | Lacks dual-core safety partitioning and hardware security-suitable for non-ASIL-B body control modules only | Select when cost-sensitive applications require reduced core count and omit secure boot or CAN FD + Ethernet convergence |
| TC397XP-128F300S DC | Infineon AURIX™ TriCore™; 300 MHz tri-core (2x TC3 + 1x PCP), 4 MB flash, 6 MB RAM, no FlexRay or AVB Ethernet | Higher compute density but lacks native FlexRay 2.1 and IEEE 1588 Ethernet-requires external PHY for time-sync networking | Prefer for high-MIPS motor control where tri-core parallelism outweighs need for FlexRay or AVB, and where Infineon toolchain is established |
Compared with SPC5746CHK0AMKU6, the SPC574SNC1AK0MLU6 sacrifices ASIL-B decomposition and secure boot for lower BOM cost, while the TC397XP offers higher raw performance but requires external components to match SPC5746CHK0AMKU6's integrated FlexRay + AVB Ethernet + HSMv2 feature set.
Availability
SPC5746CHK0AMKU6 is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, and battery management systems requiring stable component supply across extended automotive lifecycles (15+ years).
Supply support for SPC5746CHK0AMKU6 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, and IoT applications, with deep expertise in secure microcontrollers and radar processing solutions.
The MPC5746C product line was engineered specifically for ASIL-B automotive powertrain and chassis control, integrating functional safety mechanisms, hardware security, and high-bandwidth communication interfaces into a single die.
FAQ
What is the maximum junction temperature specification for the SPC5746CHK0AMKU6?
The SPC5746CHK0AMKU6 is rated for a maximum junction temperature (TJ) of 150°C under bias, with ambient operating range from –40°C to +125°C. This rating is validated per NXP's thermal characterization on a 2s2p evaluation board and supports deployment in under-hood automotive environments including engine control and transmission control units where sustained high-temperature operation is required. Thermal design must observe specified decoupling capacitor values and PCB copper area per the voltage regulator section of the datasheet to maintain reliability at TJ = 150°C.
Does the SPC5746CHK0AMKU6 support CAN FD, and how many CAN FD channels does it provide?
Yes, the SPC5746CHK0AMKU6 supports CAN FD on all eight integrated FlexCAN3 modules. Each FlexCAN channel is individually configurable for classical CAN or CAN FD operation up to 5 Mbps, with programmable data phase bit rates and flexible payload lengths up to 64 bytes. This capability is confirmed in the "Communication" section of the MPC5746C datasheet Rev. 6 and enables high-throughput diagnostics, OTA updates, and sensor data aggregation in modern E/E architectures.
What type of hardware security does the SPC5746CHK0AMKU6 include, and is it certified?
The SPC5746CHK0AMKU6 integrates the Hardware Security Module version 2 (HSMv2), which provides secure boot, cryptographic acceleration (AES-128/256, SHA-256), and tamper-resistant key storage. It supports Password and Device Security (PASS) for advanced lifecycle management and is aligned with ISO/SAE 21434 cybersecurity requirements. While HSMv2 itself is not independently certified, the entire SPC5746CHK0AMKU6 device meets ISO 26262 ASIL-B functional safety requirements, and its security features are validated in NXP's Automotive Security Evaluation Framework (ASEF) documentation.
What is the flash memory configuration of the SPC5746CHK0AMKU6, and does it support EEPROM emulation?
The SPC5746CHK0AMKU6 contains 3 MB of on-chip flash memory organized into ten 256 KB blocks, with dedicated data flash partitions (including 64 KB HSM code blocks and 16 KB HSM data blocks) and RWW (Read-While-Write) capability. EEPROM emulation is supported via NXP's SPC5746C Flash Driver Library, which implements wear-leveling and atomic write routines across designated flash sectors-enabling up to 64 KB of emulated EEPROM with >100k erase cycles and data retention exceeding 10 years at 125°C.
Which development tools and debug interfaces are supported for the SPC5746CHK0AMKU6?
The SPC5746CHK0AMKU6 supports Nexus Class 3+ debug via JTAG and cJTAG interfaces, compliant with IEEE-ISTO 5001-2008. It is fully compatible with PE Micro's Cyclone Pro, Lauterbach TRACE32, and iSYSTEM winIDEA debug probes. NXP provides S32DS IDE with built-in SPC5746C configuration tools, HAL libraries, and AUTOSAR MCAL drivers. Production programming is supported via BAF (Boot Assist Flash) over SCI or CAN, enabling field firmware updates without JTAG access.
SPC5746CHK0AMKU6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 176-LQFP Exposed Pad
- Series:
- MPC57xx
- Packaging:
- Bulk
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- e200z2, e200z4
- Core Size:
- 32-Bit Dual-Core
- Speed:
- 80MHz/160MHz
- Connectivity:
- CANbus, Ethernet, I2C, LINbus, SAI, SPI, USB, USB OTG
- Peripherals:
- DMA, LVD, POR, WDT
- Number of I/O:
- 129
- Program Memory Size:
- 3MB (3M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 80x10b, 64x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
SPC5746CHK0AMKU6 FAQ
1.How can I place an order for SPC5746CHK0AMKU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for SPC5746CHK0AMKU6 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 SPC5746CHK0AMKU6 reliable?
The price and inventory of SPC5746CHK0AMKU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPC5746CHK0AMKU6 is usually 5 days.
3.What payment methods are accepted for SPC5746CHK0AMKU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPC5746CHK0AMKU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SPC5746CHK0AMKU6?
SPC5746CHK0AMKU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SPC5746CHK0AMKU6 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 SPC5746CHK0AMKU6?
For technical support, including SPC5746CHK0AMKU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPC5746CHK0AMKU6 requirements.
6.How does Aetrix verify that SPC5746CHK0AMKU6 is sourced from the original manufacturer or authorized distributors?
All SPC5746CHK0AMKU6 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 SPC5746CHK0AMKU6 meets industry standards.
7.What is the process for return or replacement of SPC5746CHK0AMKU6?
All SPC5746CHK0AMKU6 units undergo pre-shipment inspection (PSI). If there is an issue with SPC5746CHK0AMKU6, 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 SPC5746CHK0AMKU6 part is unused and in its original packaging.
Return procedure for SPC5746CHK0AMKU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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