NXP Semiconductors SPC5746CSK1MMJ6

Overview

SPC5746CSK1MMJ6 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 (ECUs), transmission controllers, and battery management systems in vehicles operating from –40°C to +125°C.

For engineers reviewing the SPC5746CSK1MMJ6 datasheet, SPC5746CSK1MMJ6 pinout, SPC5746CSK1MMJ6 application, or SPC5746CSK1MMJ6 equivalent, this page delivers verified technical context, validated pin mapping for the 256-pin MAPBGA package, confirmed CAN FD and FlexRay interface capabilities, and real-world automotive use cases aligned with OEM ECU design requirements.

Technical Context

The SPC5746CSK1MMJ6 implements a dual-core Power Architecture® architecture with tightly coupled crossbar switch interconnect, enabling concurrent access to flash, RAM, and peripherals by both CPUs. Its memory subsystem includes triple-ported 3 MB flash with page buffers and 384 KB SRAM distributed across eight banks, all protected by SECDED ECC for data integrity.

It integrates eight FlexCAN3 modules with CAN FD support, dual-channel FlexRay 2.1, 10/100 Ethernet with AVB and IEEE 1588, and a hardware security module (HSMv2) supporting advanced life-cycle management and censorship - all coordinated via a centralized System Memory Protection Unit (SMPU) with 32 region descriptors.

Key Specifications

Pinout & Package

SPC5746CSK1MMJ6 is housed in a 256-ball MAPBGA (package code MJ) with 0.8 mm pitch, designed for high-density automotive PCB layouts and thermal performance in under-hood environments. Pin assignment follows NXP's standardized ball map for MPC5746C family devices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive microcontroller applications.

Compared with MPC5746CSK1MMJ6, MPC5748G extends flash capacity and thermal envelope while retaining software compatibility, whereas SPC58NG84C3 represents a generational shift to Arm-based safety computing - requiring full re-architecture but delivering higher throughput and ASIL-D scalability.

Availability

SPC5746CSK1MMJ6 is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, and battery management systems requiring stable component supply across long automotive production lifecycles.

Supply support for SPC5746CSK1MMJ6 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 microcontrollers.

The SPC5746CSK1MMJ6 belongs to NXP's SPC57 family of Power Architecture® automotive MCUs, engineered specifically for ASIL-B real-time control in powertrain, chassis, and safety-critical electronic control units.

FAQ

What is the maximum operating frequency of the SPC5746CSK1MMJ6 dual-core CPU configuration?

The SPC5746CSK1MMJ6 features two independent CPU cores: the e200z4 core operates at up to 160 MHz, while the e200z2 core runs at up to 80 MHz. Both cores support Variable Length Encoding (VLE) for improved code density. These frequencies are guaranteed across the full –40°C to +125°C ambient temperature range and require proper voltage regulation per the datasheet's recommended operating conditions for VDD_LV and VDD_HV supplies.

Does the SPC5746CSK1MMJ6 support CAN FD, and how many CAN interfaces does it include?

Yes, the SPC5746CSK1MMJ6 supports CAN FD on all eight integrated FlexCAN3 modules. Each module is independently configurable for classical CAN or CAN FD operation, including bit-rate switching up to 5 Mbps. This capability is confirmed in the official MPC5746C datasheet Rev. 6 (Section 2, Family Comparison) and applies directly to the SPC5746CSK1MMJ6 variant with MJ package and C temperature grade.

What package type and pin count does the SPC5746CSK1MMJ6 use?

The SPC5746CSK1MMJ6 uses a 256-ball MAPBGA package (package code MJ) with 0.8 mm ball pitch. This is explicitly defined in NXP's ordering information section (Section 3.2), where "MJ" denotes the 256-pin MAPBGA variant. The device is qualified for automotive use and supports thermal dissipation requirements typical of under-hood ECU applications.

Is the SPC5746CSK1MMJ6 certified for functional safety standards?

Yes, the SPC5746CSK1MMJ6 is designed to meet ISO 26262 ASIL-B requirements. Its safety features include a Fault Collection and Control Unit (FCCU), System Memory Protection Unit (SMPU) with 32 region descriptors, end-to-end ECC on all memory and buses, and hardware-assisted lockstep monitoring capability. These elements are documented in the MPC5746C datasheet Rev. 6 (Section 1, Features) and supported by NXP's ASIL-B safety manual.

What is the role of the Hardware Security Module (HSMv2) in the SPC5746CSK1MMJ6?

The HSMv2 in the SPC5746CSK1MMJ6 provides dedicated cryptographic acceleration (AES, SHA, RSA), secure key storage, and secure boot verification. It operates independently from the main CPUs and supports advanced device security functions including password-based access control, life-cycle management, and censorship - all required for UNECE R155-compliant vehicle cybersecurity frameworks.