STMicroelectronics SPC564B74L7C9ECY

Overview

SPC564B74L7C9ECY 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 CSE cryptographic engine - deployed in body control modules requiring ASIL-B compliance and real-time diagnostics.

For engineers reviewing the SPC564B74L7C9ECY datasheet, SPC564B74L7C9ECY pinout, SPC564B74L7C9ECY application, or SPC564B74L7C9ECY equivalent, key selection criteria include dual-core timing capability (e200z4d + e200z0h), 6-channel FlexCAN with 64 buffers each, 8-channel buffered DSPI, Fast Ethernet Controller (MII), and safety features including MPU, Memory BIST, and Safety System Watchdog Timer (SWT).

Technical Context

This MCU integrates two independent Power Architecture® cores: a high-performance e200z4d (120 MHz) for main application tasks and a dedicated e200z0h (80 MHz) for safety monitoring and diagnostics. Core coupling is managed via shared memory with hardware-enforced access control and MPU-protected regions.

The peripheral set is architected for automotive body electronics: 64-channel eMIOS supports synchronized PWM/ADC for lighting control; dual ADC subsystems (10-bit + 12-bit, up to 90 total channels) feature analog watchdogs; and the Cryptographic Services Engine (CSE) enables AES-128 encryption and secured boot - all operating across -40°C to +125°C with single 3.3 V or 5 V supply.

Key Specifications

Pinout & Package

LQFP176 package (24 × 24 × 1.4 mm), RoHS-compliant, ECOPACK® certified. Pin mapping validated per STMicroelectronics DocID17478 Rev 9, Section 2 - includes dedicated system pins (VDD, VSS, RESET, CLKIN, PLLCLK), functional port groups (PORTA–PORTH), and peripheral-specific signal banks (CAN0–CAN5, DSPI0–DSPI7, LIN0–LIN9, ETH_MII).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SPC564B70L7C9ECY, the SPC564B74L7C9ECY provides 1 MByte additional Flash for secure boot partitions and field-upgradable features; versus SPC56EC74B3C9ECY, it trades BGA routing complexity and debug depth for LQFP manufacturability and thermal performance in space-constrained modules.

Availability

SPC564B74L7C9ECY is available at Aetrix Electronics and suitable for automotive body control modules, roof domain gateways, adaptive front lighting systems, and smart junction boxes requiring stable component supply across extended vehicle lifecycles.

Supply support for SPC564B74L7C9ECY 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 SoCs since 1987.

The SPC56xx family targets automotive body electronics with functional safety (ISO 26262), real-time determinism, and integrated communication peripherals - specifically engineered for ECU consolidation in modern vehicle architectures.

FAQ

What is the maximum operating frequency of the SPC564B74L7C9ECY's primary core?

The primary e200z4d core operates at up to 120 MHz, delivering 200 MIPs performance. This frequency is achieved using the FMPLL driven by the 4–40 MHz external crystal oscillator or internal 16 MHz RC oscillator, with clock monitoring enforced by the CMU to detect drift or failure.

Does the SPC564B74L7C9ECY support secure boot, and how is it implemented?

Yes - secure boot is implemented via the Cryptographic Services Engine (CSE), which performs AES-128 decryption and CMAC authentication of the boot image stored in protected Flash sectors. Boot validation occurs before code execution begins, and the CSE enforces immutable root-of-trust through one-time programmable (OTP) keys.

Can the SPC564B74L7C9ECY operate from a 3.3 V supply only, or is 5 V also supported?

The device supports both 3.3 V and 5 V single-supply operation. At 3.3 V, it meets all specifications across the full temperature range (-40°C to +125°C); at 5 V, it enables direct interfacing with legacy 5 V automotive sensors and transceivers without level-shifting circuitry.

How many CAN interfaces does the SPC564B74L7C9ECY integrate, and what buffer depth is available per channel?

The MCU integrates six FlexCAN controllers, each with 64 message buffers. These buffers support flexible mailbox allocation, priority-based transmission, and hardware timestamping - enabling robust handling of mixed-rate CAN traffic (e.g., 500 kbps powertrain messages alongside 125 kbps body network frames) without CPU polling overhead.