STMicroelectronics SPC564B74B3C9E0X

Overview

SPC564B74B3C9E0X from STMicroelectronics is a 32-bit automotive MCU based on the Power Architecture® e200z4d core, operating up to 120 MHz and delivering 200 MIPs. It integrates 3 MByte on-chip Flash with ECC, 256 KByte SRAM with ECC, dual ADCs (10-bit and 12-bit), six FlexCAN interfaces, Fast Ethernet Controller, and Cryptographic Services Engine (AES-128). It targets body electronics control units requiring functional safety compliance and real-time deterministic response.

For engineers reviewing the SPC564B74B3C9E0X datasheet, SPC564B74B3C9E0X pinout, SPC564B74B3C9E0X application, or SPC564B74B3C9E0X equivalent, key selection considerations include its dual-core timing architecture (e200z4d + e200z0h), 256-pin LBGA package with Nexus 3+ debug support, -40 to 125 °C operation, and integrated safety features including Memory Protection Unit, Safety System Watchdog Timer, and secured boot mode.

Technical Context

This MCU implements a dual-core heterogeneous architecture: a high-performance e200z4d core (120 MHz) for main application tasks and a dedicated e200z0h core (80 MHz) for safety-critical or real-time background functions. Both cores share memory subsystems protected by a 16-entry MPU and ECC-enabled Flash/SRAM.

It supports automotive communication stacks via six FlexCAN controllers (64 buffers each), one dual-channel FlexRay (128 buffers), ten LINFlex/UART channels, eight DSPI interfaces, and a full MII-compliant Fast Ethernet Controller - all synchronized through a centralized clock generation system featuring FMPLL, multiple oscillators (4–40 MHz crystal, 32 kHz aux, 16 MHz/128 kHz RC), and Clock Monitoring Unit.

Key Specifications

Pinout & Package

SPC564B74B3C9E0X is housed in a 256-ball Low-profile Ball Grid Array (LBGA) package measuring 17 mm × 17 mm × 1.7 mm, optimized for automotive PCB thermal and mechanical reliability. Pin assignments follow ST's standardized LBGA256 configuration per Figure 4 of DocID17478 Rev 9.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SPC56EC74B3C9E0X, this part trades peak performance and flash endurance for proven qualification in high-volume body ECUs; versus MPC5643L, it adds critical networking (Ethernet/FlexRay), advanced debug (Nexus 3+), and enhanced safety mechanisms required for new platform designs.

Availability

SPC564B74B3C9E0X is available at Aetrix Electronics and suitable for automotive body control modules, advanced lighting systems, gateway ECUs, and electric power steering support units requiring stable component supply across long production lifecycles.

Supply support for SPC564B74B3C9E0X 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive-grade microcontrollers, power management ICs, and sensors with ISO/TS 16949-certified manufacturing.

This device belongs to the SPC564Bxx automotive MCU product line, designed specifically for ASIL-B/C-compliant body electronics applications demanding high integration, functional safety, and multi-network connectivity in harsh environments.

FAQ

What is the maximum operating temperature range for SPC564B74B3C9E0X?

The SPC564B74B3C9E0X is qualified for continuous operation from -40 °C to +125 °C ambient temperature, meeting AEC-Q100 Grade 1 requirements. Its thermal design includes on-chip temperature monitoring and thermal shutdown circuitry that triggers at 150 °C junction temperature to prevent permanent damage under overload conditions.

Does SPC564B74B3C9E0X support ISO 26262 functional safety certification?

Yes - the device includes hardware safety mechanisms required for ISO 26262 ASIL-B and ASIL-C development: lockstep-capable memory protection unit (MPU), Safety System Watchdog Timer (SWT) with windowed timeout, ECC on Flash/SRAM, and clock monitoring unit (CMU). ST provides certified safety manuals, FMEDA reports, and diagnostic software libraries to support ASIL decomposition.

Can SPC564B74B3C9E0X boot directly from external QSPI Flash?

No - the device boots exclusively from internal Flash memory. External memory interfaces (e.g., DSPI, FlexBus) can be initialized post-boot for code/data offload, but the reset vector and initial firmware must reside in on-chip Flash. Boot mode is selected via dedicated BOOT_CFG pins tied during power-up.

What debug interface does SPC564B74B3C9E0X support in the LBGA256 package?

The LBGA256 variant supports Nexus 3+ debug interface, providing real-time instruction trace, data trace, and complex breakpoint capabilities beyond standard JTAG. This enables full visibility into dual-core execution flow, critical for timing analysis and safety verification in automotive software validation.