STMicroelectronics SPC564B74L7B8E0X

Overview

SPC564B74L7B8E0X 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 ADC (10-bit/12-bit), 6 FlexCAN interfaces, Fast Ethernet Controller, and Cryptographic Services Engine (AES-128). It targets body electronics control units requiring ASIL-B compliance, such as smart junction boxes and gateway modules.

For engineers reviewing the SPC564B74L7B8E0X datasheet, SPC564B74L7B8E0X pinout, SPC564B74L7B8E0X application, or SPC564B74L7B8E0X equivalent, key selection criteria include dual-core timing architecture (e200z4d + e200z0h), integrated Ethernet PHY interface support, safety-critical diagnostic features (SWT, MPU, BIST), and automotive-grade (-40 to 125 °C) operation in LBGA256 package.

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 real-time safety monitoring and communication stack handling. The system includes a 32-channel eDMA controller, Nexus 3+ debug interface (LBGA256 only), and hardware-based memory protection unit (16-entry MPU) supporting ASIL-B decomposition.

Clock generation relies on multiple oscillators - 4–40 MHz external crystal, 16 MHz internal RC, 32 kHz auxiliary, and 128 kHz slow RC - managed by a software-controlled FMPLL and monitored via Clock Monitoring Unit (CMU). Power management supports ultra-low-power STANDBY mode with CAN ID sampling and fast wake-up from RAM execution.

Key Specifications

Pinout & Package

SPC564B74L7B8E0X is housed in a 256-pin Low-profile Ball Grid Array (LBGA256) package measuring 17 mm × 17 mm × 1.7 mm, optimized for automotive PCB layout density and thermal performance under extended temperature operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SPC564B74L7B8E0X, the LQFP208 variant trades debug depth and package density for easier prototyping, while the SPC56EC74B3 upgrades core performance and memory at the expense of integrated Ethernet - making the original optimal for gateway and networking-centric body ECUs.

Availability

SPC564B74L7B8E0X is available at Aetrix Electronics and suitable for automotive body control modules, gateway units, smart junction boxes, and LED headlamp controllers requiring stable component supply across long production lifecycles.

Supply support for SPC564B74L7B8E0X 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, industrial, and power solutions with strong IP in microcontrollers, analog, and MEMS technologies.

The SPC564Bxx family belongs to ST's SPC5 automotive MCU platform, designed specifically for ASIL-B-compliant body electronics applications demanding high integration, functional safety, and multi-protocol connectivity.

FAQ

What is the maximum operating frequency of the SPC564B74L7B8E0X core?

The primary e200z4d core operates at up to 120 MHz, delivering 200 MIPs, while the secondary e200z0h core runs at up to 80 MHz (75 MIPs). Both cores are fully functional simultaneously, with independent clock domains and memory spaces, enabling true heterogeneous processing for safety-critical automotive tasks.

Does SPC564B74L7B8E0X support ISO 26262 ASIL-B compliance out of the box?

Yes - it includes hardware safety mechanisms required for ASIL-B: ECC on all memories, 16-entry MPU, Safety System Watchdog Timer (SWT), Clock Monitoring Unit (CMU), and user-selectable Memory BIST. ST provides certified safety documentation (FMEDA, safety manual) and qualified toolchains to support ISO 26262 development workflows.

Can the Fast Ethernet Controller operate without an external PHY?

No - the SPC564B74L7B8E0X implements only the Media Independent Interface (MII), not a physical layer. An external 100BASE-TX PHY (e.g., LAN8720A or KSZ8081) must be connected to the MII signals (RXD[3:0], TXD[3:0], RX_DV, TX_EN, etc.) to achieve full Ethernet functionality.

What debug interface does the LBGA256 package support?

The LBGA256 variant supports Nexus 3+ interface, providing real-time instruction trace, data trace, and non-intrusive breakpoints - essential for validating timing-critical safety routines. All packages also support Nexus 1 for basic debug, but only LBGA256 enables full ASIL-B verification via high-bandwidth trace streaming.