NXP Semiconductors SPC5646BF0MMJ1

Overview

SPC5646BF0MMJ1 from NXP Semiconductors is a dual-core automotive microcontroller featuring an e200z4d CPU (up to 120 MHz) and e200z0h CPU (up to 80 MHz), 3 MB on-chip flash, 256 KB SRAM, and integrated FlexCAN, DSPI, LINFlexD, FEC Ethernet, and CSE cryptographic engine. It targets safety-critical powertrain and chassis control units requiring ASIL-B compliance and real-time deterministic execution.

For engineers reviewing the SPC5646BF0MMJ1 datasheet, SPC5646BF0MMJ1 pinout, SPC5646BF0MMJ1 application, or SPC5646BF0MMJ1 equivalent, key selection criteria include dual-core interrupt routing capability, 6-channel FlexCAN with CAN Sampler, 100 Mbps Fast Ethernet Controller, 256-ball MAPBGA package (17 mm × 17 mm), and hardware memory protection unit supporting 16 regions.

Technical Context

The SPC5646BF0MMJ1 implements a crossbar switch architecture enabling concurrent access to flash, SRAM, and peripherals by multiple bus masters-including both e200z4d and e200z0h cores. Its Dual-core Interrupt Controller (INTC) supports flexible routing of 64+ interrupt sources to either or both CPUs, with priority-based preemptive scheduling.

It integrates a dedicated Cross Trigger Unit (CTU) for precise synchronization between eMIOS timers and ADC conversions, and includes a Safety Enhanced Software Watchdog Timer (SWT) with keyed functionality-critical for ISO 26262-compliant system monitoring in automotive applications.

Key Specifications

Pinout & Package

SPC5646BF0MMJ1 is packaged in a 256-ball MAPBGA (17 mm × 17 mm, 1.0 mm pitch) with VDD_HV_A, VDD_HV_B, VDD_HV_ADC0, VDD_HV_ADC1, VDD_LV, and VSS_HV/VSS_LV supply domains. Pin functions are defined per ball map in NXP's MPC5646C datasheet Rev. 7, Section 3.4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC5646CK0MMJ1, SPC5646BF0MMJ1 offers lower thermal qualification but identical feature set and pin compatibility; versus SPC564A70L5, it adds FlexRay, FEC, and dual-core safety architecture at higher pin count and cost-making it appropriate for ASIL-B gateway and chassis controllers.

Availability

SPC5646BF0MMJ1 is available at Aetrix Electronics and suitable for automotive powertrain control, chassis electronics, and vehicle gateway applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualified sourcing.

Supply support for SPC5646BF0MMJ1 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 company specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with leadership in Power Architecture and Arm-based microcontrollers.

The SPC5646BF0MMJ1 belongs to NXP's SPC56 family of automotive MCUs, designed specifically for ASIL-B compliant powertrain, chassis, and advanced driver assistance systems requiring dual-core determinism, hardware security, and multi-protocol connectivity.

FAQ

What is the maximum operating frequency of the SPC5646BF0MMJ1's primary CPU core?

The SPC5646BF0MMJ1 features an e200z4d core rated for up to 120 MHz operation under full characterization at 125 °C ambient. This frequency is achievable with proper thermal design and voltage regulation. The secondary e200z0h core operates up to 80 MHz, or at half-system frequency when the e200z4d runs above 80 MHz. SPC5646BF0MMJ1 datasheet Rev. 7 confirms this in Table 1 and Section 1.2.

Does the SPC5646BF0MMJ1 support hardware-based cryptographic acceleration?

Yes, the SPC5646BF0MMJ1 integrates a Cryptographic Services Engine (CSE) that accelerates AES-128/256 encryption/decryption, SHA-256 hashing, and RSA public-key operations. This enables secure boot, firmware authentication, and OTA update integrity verification without burdening the main CPU cores. SPC5646BF0MMJ1 documentation references CSE in Block Diagram Figure 1 and Table 2.

How many CAN interfaces does the SPC5646BF0MMJ1 include, and what is their buffer capacity?

The SPC5646BF0MMJ1 includes six FlexCAN modules, each with 64 message buffers. Additionally, it features a CAN Sampler that captures message IDs during low-power STOP mode, enabling fast wake-up and selective message filtering. This configuration is confirmed in the MPC5646C datasheet Rev. 7, Section 1.2 and Table 1.

What package type and pin count does the SPC5646BF0MMJ1 use?

The SPC5646BF0MMJ1 is supplied in a 256-ball MAPBGA package measuring 17 mm × 17 mm with 1.0 mm ball pitch. This package supports high I/O density and thermal performance required for automotive applications. Mechanical drawings and ball maps are provided in Section 5.1.3 of the MPC5646C datasheet Rev. 7.

Is the SPC5646BF0MMJ1 qualified for automotive applications under AEC-Q100?

Yes, the SPC5646BF0MMJ1 is AEC-Q100 qualified for Grade 2 (–40°C to +105°C). It meets automotive reliability and stress testing requirements including HTOL, TCT, and ESD. This qualification is documented in NXP's official ordering information and product change notifications for the SPC5646BF0MMJ1 part number.