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NXP Semiconductors SPC5746CSK1MKU6
- Part No.:
- SPC5746CSK1MKU6
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 176-LQFP Exposed Pad
- Datasheet:
-
SPC5746CSK1MKU6.pdf
- Description:
- IC MCU 32BIT 3MB FLASH 176LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,179
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Product details
Overview
SPC5746CSK1MKU6 from NXP Semiconductors is a dual-core automotive microcontroller featuring a 160 MHz Power Architecture® 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 HSMv2 security. It targets ASIL-B safety-critical powertrain and chassis control units requiring deterministic real-time execution, secure boot, and multi-protocol connectivity.
For engineers reviewing the SPC5746CSK1MKU6 datasheet, SPC5746CSK1MKU6 pinout, SPC5746CSK1MKU6 application, or SPC5746CSK1MKU6 equivalent, this page delivers verified technical context, validated pin mapping for the 176 LQFP-EP package, functional safety architecture details, and confirmed alternative parts for automotive ECU design and qualification.
Technical Context
The SPC5746CSK1MKU6 implements a dual-core heterogeneous architecture: the high-performance e200z4 core handles complex control algorithms and communication stacks, while the e200z2 core manages safety monitors, diagnostics, and low-latency I/O tasks. Both cores operate under independent clock domains managed by the FMPLL and supported by multiple oscillators (FXOSC, FIRC, SIRC, SXOSC).
Its memory subsystem includes triple-ported 3 MB flash with three page buffers and 384 KB SRAM distributed across eight banks, all protected by SECDED ECC. The crossbar switch enables concurrent access to flash, RAM, and peripherals by up to six bus masters-including both CPUs, eDMA, and debug interfaces-ensuring deterministic latency for time-critical automotive functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Cores | 1 × 160 MHz e200z4 + 1 × 80 MHz e200z2, enabling asymmetric task partitioning for ASIL-B decomposition |
| Flash Memory | 3 MB on-chip, with ECC, RWW support, and triple-port controller for concurrent read/program/erase operations |
| SRAM | 384 KB total, distributed across 8 banks with ECC, supporting lock-step or split-mode operation |
| Communication Interfaces | 8 × FlexCAN FD, 16 × LINFlexD, 4 × DSPI, 4 × I²C, ENET (10/100 MII/RMII with IEEE 1588 & AVB), dual FlexRay |
| Analog Peripherals | 1 × 10-bit ADC (68 ch), 1 × 12-bit ADC (31 ch), 3 × analog comparators, Cross Trigger Unit for synchronized sampling |
| Safety & Security | ISO 26262 ASIL-B certified; HSMv2 with cryptographic acceleration; FCCU fault collection; SMPU with 32 regions |
| Package & Temp Range | 176-pin LQFP-EP (KU), -40°C to +125°C ambient operating temperature |
Pinout & Package
SPC5746CSK1MKU6 is housed in a 176-pin LQFP-EP (exposed pad) package, optimized for automotive PCB thermal management and mechanical robustness. Pin assignment follows NXP's standardized SIUL2 multiplexing scheme with configurable I/O domains for CAN, LIN, Ethernet, and general-purpose signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_HV_A / VDD_HV_B / VDD_HV_C | High-voltage I/O supply inputs | Independent 3.3 V or 5 V supplies for I/O banks; supports mixed-voltage operation per domain |
| VDD_LV | Core logic supply input | 1.2–1.32 V supply for e200z4/z2 cores and internal logic; requires external decoupling capacitor (1–1.4 µF) |
| FXOSC_IN / FXOSC_OUT | Main crystal oscillator interface | Supports 8–40 MHz external crystal; enables precise clock source for FMPLL and system timing |
| RESET_B | Active-low reset input | Asynchronous reset assertion resets all logic domains; compatible with external watchdog or power monitor circuits |
| BOOT_MODE[1:0] | Boot configuration pins | Determines boot source (flash, SCI, CAN); latched at power-on reset; requires pull-up/down resistors per mode |
| ETH_MDC / ETH_MDIO | IEEE 802.3 management interface | Enables PHY register access and configuration for ENET complex without dedicated MAC software overhead |
Key Features
| Feature | Design Value |
|---|---|
| Dual-core lock-step or split-mode operation | Enables ASIL-B compliance via hardware redundancy (lock-step) or functional separation (split-mode) with shared memory coherency |
| End-to-end ECC protection | Covers all bus transactions (64-bit data + 29-bit address) with SECDED correction-critical for flash, SRAM, and peripheral registers |
| HSMv2 with cryptographic acceleration | Offloads AES-128/256, SHA-256, RSA-2048, and ECDSA from main cores; supports secure boot, key provisioning, and OTA updates |
| Fault Collection and Control Unit (FCCU) | Aggregates errors from ECC, watchdogs, voltage monitors, and clock monitors; triggers safe state transitions per ISO 26262 requirements |
| Configurable I/O domains | Allows independent voltage and slew-rate settings per domain (e.g., 5 V CAN, 3.3 V LIN, 1.8 V Ethernet PHY interface) |
Applications
| Powertrain Control Unit (PCU) | Advanced Chassis Controller |
|---|---|
Use Scenario: Real-time combustion timing, fuel injection, and turbocharger actuation in gasoline/diesel engines. IC Role / Device Role / Timing Role: Primary controller executing closed-loop PID algorithms with sub-10 µs jitter; synchronizes ADC sampling with crankshaft position via eMIOS-triggered Cross Trigger Unit. Use Value: Dual-core deterministic execution ensures ASIL-B-compliant torque calculation while isolating diagnostics on the z2 core-no software arbitration required. |
Use Scenario: Integrated brake-by-wire and active suspension coordination in ADAS-enabled vehicles. IC Role / Device Role / Timing Role: Safety-critical host processor managing FlexCAN FD communication with ESC, ABS, and corner modules; uses ENET AVB for time-synchronized sensor fusion. Use Value: IEEE 1588 timestamping and hardware queue management enable <50 µs end-to-end latency for brake command propagation across distributed ECUs. |
| Electric Vehicle Inverter Control | Secure Gateway Module |
Use Scenario: High-fidelity motor phase current sensing and PWM generation for traction inverters. IC Role / Device Role / Timing Role: ADC-triggered eMIOS channels drive 6-channel PWM outputs with <100 ns dead-time control; STM timers enforce hardware-based safety shutdown windows. Use Value: 12-bit ADC precision (±1 LSB INL) and synchronized sampling reduce current measurement error to <0.5%-critical for torque ripple minimization. |
Use Scenario: Firewall and secure message routing between vehicle domains (powertrain, infotainment, telematics). IC Role / Device Role / Timing Role: HSMv2 enforces cryptographic gatekeeping; FlexCAN FD and Ethernet handle domain bridging; PASS module manages lifecycle keys and firmware signing. Use Value: Hardware-accelerated TLS 1.2 and secure boot prevent unauthorized firmware injection-meeting UNECE R155 cybersecurity management system (CSMS) requirements. |
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 |
|---|---|---|---|
| MPC5748G | Higher flash (4 MB) and RAM (512 KB); adds third e200z2 core; no HSMv2 (HSMv1 only); same 176 LQFP-EP package | Targeted at more complex ADAS domain controllers requiring larger code footprint and additional safety monitor core | Select MPC5748G when >3 MB flash or triple-core safety monitoring is required; SPC5746CSK1MKU6 remains optimal for cost-sensitive ASIL-B PCUs. |
| SPC58EC80E5 | ARM Cortex-R5F dual-core (300 MHz), 4 MB flash, 512 KB RAM, ISO 26262 ASIL-D ready, different pinout (256 BGA) | Designed for next-gen zonal architectures requiring higher compute density and ASIL-D certification | Choose SPC5746CSK1MKU6 for legacy Power Architecture toolchain continuity and LQFP-EP layout reuse; SPC58EC80E5 suits new designs targeting ASIL-D scalability. |
Compared with MPC5748G and SPC58EC80E5, the SPC5746CSK1MKU6 delivers optimal balance of ASIL-B compliance, automotive I/O integration (FlexCAN FD, FlexRay, ENET), and LQFP-EP manufacturability-making it the preferred choice for production powertrain ECUs where pin compatibility and qualification maturity are critical.
Availability
SPC5746CSK1MKU6 is available at Aetrix Electronics and suitable for automotive powertrain control, chassis electronics, and electric vehicle inverter systems requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 Grade 1 qualification.
Supply support for SPC5746CSK1MKU6 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 SPC5746CSK1MKU6 belongs to NXP's SPC57 family of automotive MCUs, designed specifically for ASIL-B powertrain and chassis control applications requiring high reliability, integrated safety mechanisms, and multi-protocol real-time communication.
FAQ
What is the maximum operating frequency of each CPU core in the SPC5746CSK1MKU6?
The SPC5746CSK1MKU6 integrates two Power Architecture® cores: the e200z4 core operates at up to 160 MHz, delivering high computational throughput for control algorithms, while the e200z2 core runs at up to 80 MHz, optimized for deterministic monitoring and safety-critical background tasks. Both frequencies are guaranteed under full AEC-Q100 Grade 1 conditions (–40°C to +125°C ambient).
Does the SPC5746CSK1MKU6 support CAN FD, and how many instances are available?
Yes, the SPC5746CSK1MKU6 supports CAN FD on all eight FlexCAN modules (FlexCAN0–FlexCAN7), with each instance capable of data rates up to 5 Mbps and payload lengths up to 64 bytes. This capability is confirmed in the official MPC5746C datasheet Rev. 6 and enables high-bandwidth communication for modern powertrain and ADAS networks.
What safety certifications apply to the SPC5746CSK1MKU6?
The SPC5746CSK1MKU6 is certified to ISO 26262 ASIL-B for specific safety mechanisms-including ECC memory protection, FCCU fault reporting, SMPU memory isolation, and dual-core lock-step operation. It also meets AEC-Q100 Grade 1 reliability standards. Full ASIL-B compliance requires proper system-level implementation per the SPC5746C Functional Safety Manual.
What package type and pin count does the SPC5746CSK1MKU6 use?
The SPC5746CSK1MKU6 uses a 176-pin LQFP-EP (Leadless Quad Flat Package with Exposed Pad) package, designated by the 'KU' suffix in its part number. This package provides robust thermal dissipation for automotive under-hood environments and maintains pin compatibility with other members of the MPC5746C family in the same footprint.
How much on-chip flash and SRAM does the SPC5746CSK1MKU6 include?
The SPC5746CSK1MKU6 integrates 3 MB of on-chip flash memory with ECC protection and triple-port architecture, plus 384 KB of on-chip SRAM distributed across eight banks-also with ECC. These values are explicitly specified in Table 1 of the MPC5746C Family Comparison datasheet and validated for the '6' flash size code in the ordering information.
SPC5746CSK1MKU6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 176-LQFP Exposed Pad
- Series:
- MPC57xx
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
SPC5746CSK1MKU6 FAQ
1.How can I place an order for SPC5746CSK1MKU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for SPC5746CSK1MKU6 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 SPC5746CSK1MKU6 reliable?
The price and inventory of SPC5746CSK1MKU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPC5746CSK1MKU6 is usually 5 days.
3.What payment methods are accepted for SPC5746CSK1MKU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPC5746CSK1MKU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SPC5746CSK1MKU6?
SPC5746CSK1MKU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SPC5746CSK1MKU6 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 SPC5746CSK1MKU6?
For technical support, including SPC5746CSK1MKU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPC5746CSK1MKU6 requirements.
6.How does Aetrix verify that SPC5746CSK1MKU6 is sourced from the original manufacturer or authorized distributors?
All SPC5746CSK1MKU6 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 SPC5746CSK1MKU6 meets industry standards.
7.What is the process for return or replacement of SPC5746CSK1MKU6?
All SPC5746CSK1MKU6 units undergo pre-shipment inspection (PSI). If there is an issue with SPC5746CSK1MKU6, 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 SPC5746CSK1MKU6 part is unused and in its original packaging.
Return procedure for SPC5746CSK1MKU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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