STMicroelectronics SPC564B74L7B9ECX

Overview

SPC564B74L7B9ECX from STMicroelectronics is a 32-bit automotive MCU based on the Power Architecture® e200z4d core, operating up to 120 MHz (200 MIPs), with 3 MByte on-chip Flash (ECC), 256 KByte SRAM (ECC), and integrated FlexCAN, DSPI, LINFlex, Ethernet, and Cryptographic Services Engine (AES-128) - deployed in body control modules requiring ASIL-B compliance and functional safety support.

For engineers reviewing the SPC564B74L7B9ECX datasheet, SPC564B74L7B9ECX pinout, SPC564B74L7B9ECX application, or SPC564B74L7B9ECX equivalent, key selection criteria include dual-core timing capability (e200z4d + e200z0h), 6 FlexCAN interfaces with 64 buffers each, Fast Ethernet Controller (MII), and diagnostic features for lighting control including PWM-synchronized ADC conversion.

Technical Context

This MCU integrates two independent Power Architecture® cores: a high-performance e200z4d (120 MHz, 200 MIPs) for main application tasks and an e200z0h (80 MHz, 75 MIPs) for safety-critical or real-time background functions. It supports lockstep operation and includes a 16-entry MPU, Memory BIST, and Nexus 3+ debug interface (LBGA256 package only).

The peripheral set is optimized for automotive body electronics: 64-channel eMIOS for advanced PWM generation, dual ADCs (10-bit + 12-bit, up to 90 total channels), and dedicated lighting diagnostics including shifted PWM and analog watchdogs. Clocking includes FMPLL, 4–40 MHz crystal oscillator, and redundant RC oscillators (16 MHz / 128 kHz).

Key Specifications

Pinout & Package

LQFP176 (24 × 24 × 1.4 mm) package with 176 pins; pin mapping validated per STMicroelectronics DocID17478 Rev 9, Section 2 (Pad types, system pins, functional ports). Pinout supports full peripheral routing including 6 FlexCAN buses, MII Ethernet interface, and dual ADC inputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SPC56EC74B3, the SPC564B74L7B9ECX offers identical functionality in LQFP176 for easier prototyping and rework, while the NXP S32K144 provides ARM ecosystem advantages but omits critical features like Fast Ethernet, FlexRay, and dual-core safety architecture.

Availability

SPC564B74L7B9ECX is available at Aetrix Electronics and suitable for automotive body control modules, gateway ECUs, LED headlamp drivers, and smart junction boxes requiring stable component supply, long lifecycle support, and AEC-Q100 qualification.

Supply support for SPC564B74L7B9ECX 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, designing and manufacturing microcontrollers, power ICs, sensors, and automotive-grade silicon with ISO/TS 16949-certified processes.

The SPC56xx family targets automotive body electronics and chassis applications, emphasizing functional safety (ISO 26262), mixed-signal integration, and multi-protocol connectivity for next-generation vehicle architectures.

FAQ

What is the maximum operating frequency and core configuration of the SPC564B74L7B9ECX?

The SPC564B74L7B9ECX features two Power Architecture® cores: an e200z4d core running at up to 120 MHz (200 MIPs) for primary application processing, and an e200z0h core at up to 80 MHz (75 MIPs) for safety monitoring or background tasks. Both cores operate concurrently with shared memory and inter-core messaging via mailbox registers.

Does the SPC564B74L7B9ECX support Ethernet communication, and what interface does it use?

Yes, it integrates a Fast Ethernet Controller compliant with IEEE 802.3u, supporting 10/100 Mbps speeds via a standard MII (Media Independent Interface) with 4-bit RXD/TXD buses, RX_DV, TX_EN, and MDIO/MDC signals. No external PHY is required for basic MII operation, though external magnetics remain necessary for physical layer connection.

How many CAN interfaces does the SPC564B74L7B9ECX provide, and what buffer capacity do they offer?

The device includes six FlexCAN modules, each with 64 message buffers, supporting full CAN 2.0B protocol with programmable acceptance filtering, loopback testing, and time-triggered communication. All six CAN controllers are independently configurable and can operate simultaneously on separate networks (e.g., powertrain, chassis, body).

What safety mechanisms are built into the SPC564B74L7B9ECX for automotive ASIL-B compliance?

It incorporates hardware-level safety features including ECC on Flash, SRAM, and Data Flash; a 16-entry MPU; Clock Monitoring Unit (CMU); Safety Watchdog Timer (SWT); Memory BIST; and Nexus 3+ debug trace (on LBGA256). These elements collectively support ISO 26262 ASIL-B decomposition and enable safe state transitions during fault detection.