NXP Semiconductors SPC5745CBK1AVMH6

Overview

SPC5745CBK1AVMH6 from NXP Semiconductors is a dual-core automotive microcontroller featuring a 160 MHz e200z4 CPU and an 80 MHz e200z2 CPU, 2 MB on-chip flash memory, 256 KB SRAM, and end-to-end ECC protection across memory and bus transactions. It integrates eight FlexCAN3 modules with CAN FD support, four DSPI interfaces, 16 LINFlexD channels, and hardware security module (HSMv2) for ASIL-B functional safety compliance in powertrain control units.

For engineers reviewing the SPC5745CBK1AVMH6 datasheet, SPC5745CBK1AVMH6 pinout, SPC5745CBK1AVMH6 application, or SPC5745CBK1AVMH6 equivalent, this part delivers deterministic real-time execution, fault-tolerant memory subsystems, and automotive-grade I/O domain configuration for engine management, transmission control, and battery management systems requiring ISO 26262 ASIL-B certification.

Technical Context

The SPC5745CBK1AVMH6 implements a dual-core Power Architecture® architecture with asymmetric processing: the e200z4 core handles high-intensity tasks including real-time control loops and safety monitoring, while the e200z2 core manages communication stacks and peripheral orchestration. Both cores share a crossbar switch enabling concurrent access to 3 MB flash (with triple-port controller), 256 KB SRAM, and peripherals including eMIOS, ADCs, and FlexCAN.

Its clock system includes FMPLL with frequency modulation, 8–40 MHz FXOSC, 32 kHz SXOSC, and 16 MHz FIRC, all monitored by Clock Monitor Unit (CMU). The device supports boot from internal flash via Boot Assist Flash (BAF) and features System Memory Protection Unit (SMPU) with 32 region descriptors for memory partitioning and isolation between safety-critical and non-safety software partitions.

Key Specifications

Pinout & Package

SPC5745CBK1AVMH6 is housed in a 256-pin MAPBGA package (package code MJ) with 0.8 mm pitch, designed for automotive PCB layouts requiring thermal and EMI robustness. Pin assignments follow NXP's standard MPC574x pin multiplexing scheme, supporting configurable I/O domains for FlexCAN, LINFlexD, Ethernet, and general-purpose signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SPC5745CBK1AVMH6, MPC5746CBK1AVMH6 offers scalable memory for future-proofing, while SPC5744KBK1AVLQ6 trades core redundancy for lower unit cost - both maintain identical safety architecture and peripheral feature set except for core count and memory size.

Availability

SPC5745CBK1AVMH6 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and battery management systems requiring stable component supply, long-term automotive qualification, and ISO 26262 ASIL-B compliance.

Supply support for SPC5745CBK1AVMH6 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The SPC5745CBK1AVMH6 belongs to NXP's SPC57 family of automotive MCUs, designed specifically for powertrain and chassis control applications demanding functional safety, real-time determinism, and high reliability under extreme temperature and EMI conditions.

FAQ

What is the maximum operating temperature range for the SPC5745CBK1AVMH6?

The SPC5745CBK1AVMH6 is qualified for operation from –40 °C to +125 °C ambient temperature (Ta), with junction temperature (Tj) rated up to 150 °C. This rating aligns with AEC-Q100 Grade 1 requirements and supports deployment in under-hood automotive environments such as engine compartments and transmission housings where thermal stress is severe. The device maintains full electrical specifications across this range when used with appropriate thermal management per NXP's thermal attributes documentation.

Does the SPC5745CBK1AVMH6 support CAN FD, and how many CAN interfaces does it include?

Yes, the SPC5745CBK1AVMH6 includes eight FlexCAN3 modules, all of which support CAN FD protocol with data rates up to 5 Mbps. Each FlexCAN module is independently configurable for classic CAN or CAN FD operation, and supports programmable bit timing, message filtering, and hardware-based FIFOs. This capability enables high-bandwidth communication between powertrain ECUs and central gateways without requiring external CAN FD transceivers beyond physical layer components.

How is functional safety implemented in the SPC5745CBK1AVMH6?

The SPC5745CBK1AVMH6 achieves ISO 26262 ASIL-B compliance through integrated hardware safety mechanisms including Fault Collection and Control Unit (FCCU), System Memory Protection Unit (SMPU), end-to-end ECC on all memory and bus transactions, and lockstep-capable watchdog timers (SWT). These features are validated per ISO 26262 Part 5 and documented in NXP's safety manual for the MPC574x series. The SPC5745CBK1AVMH6 also supports safe startup sequences and runtime self-tests for memory, clocks, and peripherals.

What development tools are supported for the SPC5745CBK1AVMH6?

NXP provides comprehensive toolchain support for the SPC5745CBK1AVMH6, including S32 Design Studio IDE with GCC-based compiler, S32 Debugger, and S32 Configuration Tool for peripheral initialization. Hardware tools include the SPC5746C-Discovery board (compatible with SPC5745C), PLS UDE debugger, and Lauterbach TRACE32. All tools support Nexus Class 3+ debug interface on the e200z4 core, enabling real-time trace, breakpoint, and memory inspection during development and validation phases.

Is the SPC5745CBK1AVMH6 pin-compatible with other members of the MPC574x family?

Yes, the SPC5745CBK1AVMH6 shares the same 256-pin MAPBGA (MJ) package footprint and pin assignment with MPC5744C, MPC5746C, and SPC5746CBK1AVMH6 variants. Pin compatibility extends to power, ground, clock, reset, JTAG, and all peripheral signal groups - enabling hardware reuse across different memory and feature configurations. However, unused pins in lower-feature variants may be NC or reserved, and software initialization must match the specific peripheral enablement of each part.