STMicroelectronics SPC564B74L8C9E0X

Overview

SPC564B74L8C9E0X from STMicroelectronics is a 32-bit automotive MCU based on the Power Architecture® e200z4d core, operating up to 120 MHz and 200 MIPs. It integrates 3 MByte on-chip Flash with ECC, 256 KByte SRAM with ECC, and supports 6 FlexCAN interfaces, Fast Ethernet Controller, and Cryptographic Services Engine (AES-128). Designed for body electronics control units requiring functional safety and real-time networking.

For engineers reviewing the SPC564B74L8C9E0X datasheet, SPC564B74L8C9E0X pinout, SPC564B74L8C9E0X application, or SPC564B74L8C9E0X equivalent, key selection criteria include dual-core timing capability (e200z4d + e200z0h), ASIL-B-ready safety features (SWT, MPU, memory BIST), CAN FD readiness via FlexCAN buffers, and automotive-grade temperature range (−40 to 125 °C).

Technical Context

This MCU implements a dual-core architecture: a high-performance e200z4d core (120 MHz) for main application tasks and a dedicated e200z0h core (80 MHz) for safety monitoring or real-time background services. Both cores share access to on-chip memory protected by ECC and are supervised by a Safety System Watchdog Timer (SWT) and 16-entry Memory Protection Unit (MPU).

The device provides deterministic I/O control via 64-channel eMIOS with synchronized PWM/ADC triggering, two independent ADCs (10-bit and 12-bit, up to 90 total channels), and hardware-accelerated cryptographic services (AES-128, CMAC) supporting secure boot. Clocking includes FMPLL, four oscillators (4–40 MHz crystal, 32 kHz aux, 16/128 kHz RC), and Clock Monitoring Unit (CMU) for fail-safe detection.

Key Specifications

Pinout & Package

LQFP208 package: 28 mm × 28 mm body, 0.5 mm pitch, 208 leads, exposed thermal pad, RoHS-compliant ECOPACK®.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SPC564B74L8C9E0X, the L7 variant trades I/O count for compactness, while the EC74B3 adds FlexRay at the cost of package complexity - both retain identical safety architecture and cryptographic engine functionality.

Availability

SPC564B74L8C9E0X is available at Aetrix Electronics and suitable for automotive body control modules, gateway ECUs, and Ethernet-enabled lighting systems requiring stable component supply across long production lifecycles.

Supply support for SPC564B74L8C9E0X 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 broad IP portfolio and AEC-Q100-qualified manufacturing.

The SPC564Bxx family targets automotive body electronics, delivering ASIL-B-capable MCUs with integrated networking (CAN, LIN, Ethernet), safety mechanisms (MPU, SWT, ECC), and low-power operation for battery-sensitive modules.

FAQ

What is the maximum operating frequency of the e200z4d core in SPC564B74L8C9E0X?

The e200z4d core operates at up to 120 MHz, delivering 200 MIPs performance. This frequency is achieved using the FMPLL with a 4–40 MHz external crystal or internal 16 MHz RC oscillator as reference. The core's timing is continuously monitored by the Clock Monitoring Unit (CMU) to detect clock failures and trigger safe state entry.

Does SPC564B74L8C9E0X support secure boot, and how is it implemented?

Yes, secure boot is enabled via the Cryptographic Services Engine (CSE), which performs AES-128 decryption and CMAC authentication of signed firmware images stored in Flash. Boot ROM validates the digital signature before loading code into SRAM, preventing execution of tampered or unauthorized firmware - a requirement for UNECE R155 compliance.

How many CAN interfaces does SPC564B74L8C9E0X support, and what is the buffer depth per channel?

It supports six FlexCAN interfaces, each with 64 message buffers. These buffers are independently configurable for transmit/receive roles and support mailbox prioritization, masking, and FIFO modes - enabling robust handling of mixed CAN 2.0B and CAN FD traffic in body domain networks without CPU intervention.

Is the Fast Ethernet Controller IEEE 802.3-compliant, and does it support time-sensitive networking (TSN)?

The Fast Ethernet Controller implements the IEEE 802.3 MAC layer with MII interface and supports IEEE 1588-2008 Precision Time Protocol (PTP) timestamping. While not a full TSN switch, its hardware timestamping, low-latency DMA, and configurable interrupt triggers enable integration into AVB/TSN-aware systems when paired with compliant PHYs and software stacks.