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NXP Semiconductors SPC5746BFK1AVKU2
- Part No.:
- SPC5746BFK1AVKU2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 176-LQFP Exposed Pad
- Datasheet:
-
SPC5746BFK1AVKU2.pdf
- Description:
- IC MCU 32BIT 3MB FLASH 176LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,011
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Product details
Overview
SPC5746BFK1AVKU2 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 FlexCAN FD, Ethernet AVB, and FlexRay controllers. It targets engine control units (ECUs), transmission control modules, and chassis domain controllers requiring ASIL-B functional safety compliance.
For engineers reviewing the SPC5746BFK1AVKU2 datasheet, SPC5746BFK1AVKU2 pinout, SPC5746BFK1AVKU2 application, or SPC5746BFK1AVKU2 equivalent, key selection criteria include dual-core deterministic timing, 8 FlexCAN FD channels with message filtering and time-triggered operation, hardware security module (HSMv2) for secure boot and key management, and support for 176-pin LQFP-EP packaging with automotive-grade thermal and ESD robustness.
Technical Context
The SPC5746BFK1AVKU2 implements a tightly coupled dual-CPU architecture: the high-performance e200z4 core handles real-time control loops and safety-critical tasks, while the e200z2 core manages communication stacks and background services. Both cores share access to memory and peripherals via a crossbar switch with SMPU-enforced memory protection.
Its clock system integrates FMPLL, multiple oscillators (FXOSC, SXOSC, FIRC, SIRC), and CMU-based monitoring to meet ISO 26262 ASIL-B requirements. The device supports concurrent execution of CAN FD, LIN, Ethernet AVB, and FlexRay protocols - each with dedicated DMA channels and time-synchronized triggering via eMIOS and Cross Trigger Unit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Cores | e200z4 @ 160 MHz + e200z2 @ 80 MHz - enables parallel execution of safety-critical control and communication stacks |
| Flash Memory | 3 MB with ECC and 3-port controller - supports concurrent read/program/erase for zero-downtime firmware updates |
| SRAM | 384 KB across three RAM ports with ECC - provides fault-tolerant data storage for runtime variables and buffers |
| FlexCAN FD | 8 channels with FD support up to 5 Mbps - delivers high-bandwidth diagnostics, OTA updates, and multi-node coordination in vehicle networks |
| Ethernet Interface | 10/100 Mbit/s with AVB, IEEE 1588 v2, and multi-queue support - enables time-synchronized sensor fusion and gateway routing |
| Functional Safety | ISO 26262 ASIL-B certified - includes FCCU, HSMv2, SMPU, and end-to-end ECC for systematic fault coverage |
| Package | 176-pin LQFP-EP (exposed pad) - automotive-qualified thermal profile with 0.5 mm pitch and JEDEC-standard footprint |
Pinout & Package
SPC5746BFK1AVKU2 is housed in a 176-pin LQFP-EP package (16 × 16 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow NXP's standard MPC5746C pinout layout for this package variant, supporting full I/O multiplexing across FlexCAN, LINFlexD, DSPI, I²C, ADC, and Ethernet interfaces.
| 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 with configurable voltage domains |
| VDD_LV | Core logic supply | 1.2–1.32 V regulated input for e200z4/z2 cores - requires external decoupling per NXP's Cfp_reg specification (1.32–3 µF) |
| FXOSC_IN / FXOSC_OUT | Main crystal oscillator interface | Supports 8–40 MHz external crystal - provides primary clock source for FMPLL with ±50 ppm stability over -40°C to +105°C |
| ETH_MDC / ETH_MDIO | IEEE 802.3 management interface | Configures PHY registers and monitors link status - required for AVB stream reservation and PTP timestamp synchronization |
| CAN0_TX / CAN0_RX | FlexCAN FD channel 0 differential pair | Compliant with ISO 11898-1:2015 - supports classic CAN and CAN FD frames with bit rates up to 5 Mbps in FD mode |
| WKPU_IN0–WKPU_IN7 | Wake-up controller inputs | Eight dedicated low-power wake sources - allow selective exit from STOP/STANDBY modes without CPU intervention |
Key Features
| Feature | Design Value |
|---|---|
| Dual-core lockstep option | Configurable e200z4/e200z2 pairing with shared instruction fetch and compare logic - supports ASIL-D decomposition for critical subsystems |
| HSMv2 Security Module | Dedicated ARM Cortex-M0+ core with AES-128/256, SHA-256, RSA-2048, and secure key storage - enables secure boot, OTA authentication, and lifecycle management |
| End-to-end ECC | SECDED protection on all bus transactions (64-bit data + 29-bit address) - detects and corrects single-bit errors in flash, SRAM, and peripheral registers |
| Flexible Clock Monitoring | CMU with independent watchdog timers for FXOSC, SXOSC, FIRC, and PLL outputs - triggers fail-safe state transitions on clock failure |
| Configurable I/O Domains | Per-bank voltage and slew-rate control for FlexCAN, LINFlexD, and Ethernet pins - ensures signal integrity across mixed-protocol PCB layouts |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) Gateway |
|---|---|
|
Use Scenario: Real-time combustion timing, fuel injection, and exhaust gas recirculation control in gasoline and diesel powertrains. IC Role / Device Role / Timing Role: Primary controller executing deterministic control loops at ≤100 µs intervals using e200z4 core and eMIOS timer subsystem. Use Value: 160 MHz e200z4 core with FP-Accelerator and 8 KB instruction cache delivers 2.1 DMIPS/MHz - enabling complex model-based control algorithms within tight timing budgets. |
Use Scenario: Aggregating camera, radar, and ultrasonic sensor data across CAN FD, Ethernet AVB, and FlexRay buses for centralized fusion processing. IC Role / Device Role / Timing Role: High-throughput gateway managing synchronized timestamping (IEEE 1588), stream reservation (AVB), and protocol translation. Use Value: Dual-channel FlexRay + 8 FlexCAN FD + ENET with multi-queue support enables concurrent handling of 12+ high-priority sensor streams with sub-10 µs jitter. |
| Electric Power Steering (EPS) Controller | Chassis Domain Controller |
|
Use Scenario: Closed-loop torque assist, motor position sensing, and fault-tolerant fail-operational steering actuation. IC Role / Device Role / Timing Role: Safety-critical controller implementing ASIL-B software partitions with HSMv2-managed secure boot and runtime integrity checks. Use Value: FCCU and SMPU with 32 region descriptors enforce strict memory isolation between control, safety monitor, and communication tasks - meeting ISO 26262 tool qualification requirements. |
Use Scenario: Coordinating brake-by-wire, suspension damping, and active roll control across distributed ECUs via time-triggered networks. IC Role / Device Role / Timing Role: Central domain manager synchronizing actions across FlexRay and CAN FD networks using eMIOS-triggered ADC sampling and PWM generation. Use Value: 64-channel eMIOS with BCTU enables precise phase-aligned PWM outputs and synchronized analog capture - critical for coordinated chassis actuation. |
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 |
|---|---|---|---|
| MPC5746CK1AVKU2 | Includes HSMv2 security module and 512 KB RAM option; same 3 MB flash and dual-core configuration | Required for applications needing cryptographic acceleration, secure key provisioning, or extended RAM for OTA update staging | Select when HSMv2 features (AES, SHA, secure boot) are mandatory - SPC5746BFK1AVKU2 lacks HSM and uses 384 KB RAM only |
| SPC5744BK0MVU2 | Single e200z4 core @ 160 MHz, 1.5 MB flash, 192 KB SRAM, no HSM, 6 FlexCAN FD channels | Suitable for cost-sensitive ECUs with lower peripheral count and no domain controller requirements | Choose for simpler powertrain or body control modules where dual-core determinism and Ethernet/FlexRay are unnecessary |
Compared with SPC5746BFK1AVKU2, MPC5746CK1AVKU2 adds hardware security and RAM headroom for secure firmware updates, while SPC5744BK0MVU2 reduces complexity and cost by removing one CPU core, Ethernet, FlexRay, and 2 FlexCAN FD channels - making it appropriate for non-domain-controller roles.
Availability
SPC5746BFK1AVKU2 is available at Aetrix Electronics and suitable for engine control units, ADAS gateways, electric power steering systems, and chassis domain controllers requiring stable component supply across automotive production lifecycles.
Supply support for SPC5746BFK1AVKU2 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 microcontrollers.
The SPC5746BFK1AVKU2 belongs to NXP's SPC57 family of 32-bit Power Architecture microcontrollers designed specifically for ASIL-B automotive control applications including powertrain, chassis, and advanced driver assistance systems.
FAQ
What is the maximum operating temperature range for the SPC5746BFK1AVKU2?
The SPC5746BFK1AVKU2 is qualified for operation from –40°C to +105°C ambient temperature (Ta), with junction temperature (Tj) rated up to 150°C. This rating aligns with automotive Grade 2 specifications and is validated per AEC-Q100 Rev G, making SPC5746BFK1AVKU2 suitable for under-hood engine control and transmission applications where thermal stress is critical.
Does the SPC5746BFK1AVKU2 include hardware security features like secure boot?
No, the SPC5746BFK1AVKU2 does not include the Hardware Security Module (HSMv2). That feature is present only in variants with "C" suffix (e.g., MPC5746C), whereas SPC5746BFK1AVKU2 is a "B"-series part. Secure boot, cryptographic acceleration, and key management require upgrading to SPC5746CK1AVKU2 or equivalent HSM-enabled variants.
How many FlexCAN FD channels does the SPC5746BFK1AVKU2 support?
The SPC5746BFK1AVKU2 supports eight FlexCAN FD channels (FlexCAN0 through FlexCAN7), each capable of bit rates up to 5 Mbps in FD mode. All channels implement ISO 11898-1:2015 compliance, message filtering, and time-triggered operation - essential for high-bandwidth vehicle networking in modern E/E architectures.
Is the SPC5746BFK1AVKU2 pin-compatible with other MPC5746x variants in the same package?
Yes, the SPC5746BFK1AVKU2 shares identical pinout and package dimensions (176-pin LQFP-EP) with all MPC5746x derivatives in the KU package, including MPC5746CK1AVKU2 and MPC5746BK1AVKU2. Signal mapping, power/ground pin locations, and boundary scan (JTAG/cJTAG) are fully compatible - enabling drop-in replacement where functional requirements match.
What debug interfaces are supported by the SPC5746BFK1AVKU2?
The SPC5746BFK1AVKU2 supports IEEE 1149.1 JTAG and IEEE 1149.7 cJTAG for boundary scan testing, plus Nexus Class 3+ debug interfaces for both e200z4 and e200z2 cores. These interfaces enable real-time trace, non-intrusive breakpoints, and memory inspection - critical for ASIL-B development and validation workflows using tools like Lauterbach TRACE32.
SPC5746BFK1AVKU2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 176-LQFP Exposed Pad
- Series:
- MPC57xx
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- e200z4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 120MHz
- Connectivity:
- CANbus, Ethernet, FlexRay, I2C, LINbus, SPI
- Peripherals:
- DMA, I2S, POR, WDT
- Number of I/O:
- 129
- Program Memory Size:
- 3MB (3M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 64K x 8
- RAM Size:
- 384K x 8
- Voltage - Supply (Vcc/Vdd):
- 3.15V ~ 5.5V
- Data Converters:
- A/D 36x10b, 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
SPC5746BFK1AVKU2 FAQ
1.How can I place an order for SPC5746BFK1AVKU2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SPC5746BFK1AVKU2 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 SPC5746BFK1AVKU2 reliable?
The price and inventory of SPC5746BFK1AVKU2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPC5746BFK1AVKU2 is usually 5 days.
3.What payment methods are accepted for SPC5746BFK1AVKU2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPC5746BFK1AVKU2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SPC5746BFK1AVKU2?
SPC5746BFK1AVKU2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SPC5746BFK1AVKU2 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 SPC5746BFK1AVKU2?
For technical support, including SPC5746BFK1AVKU2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPC5746BFK1AVKU2 requirements.
6.How does Aetrix verify that SPC5746BFK1AVKU2 is sourced from the original manufacturer or authorized distributors?
All SPC5746BFK1AVKU2 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 SPC5746BFK1AVKU2 meets industry standards.
7.What is the process for return or replacement of SPC5746BFK1AVKU2?
All SPC5746BFK1AVKU2 units undergo pre-shipment inspection (PSI). If there is an issue with SPC5746BFK1AVKU2, 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 SPC5746BFK1AVKU2 part is unused and in its original packaging.
Return procedure for SPC5746BFK1AVKU2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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