STMicroelectronics SR5E1E770C30F00X

Overview

SR5E1E770C30F00X from STMicroelectronics is an AEC-Q100 qualified automotive MCU featuring dual 300 MHz Arm® Cortex®‑M7 cores, 2 MB on-chip flash (including 960 KB OTA-reprogrammable bank), 488 KB SRAM, ASIL-D safety architecture, and integrated HSM with Cortex®‑M0+ core running at 150 MHz - designed for silicon carbide and gallium nitride power conversion in traction inverters and on-board chargers.

For engineers reviewing the SR5E1E770C30F00X datasheet, SR5E1E770C30F00X pinout, SR5E1E770C30F00X application, or SR5E1E770C30F00X equivalent, key selection criteria include dual-core lockstep capability, 102 ps high-resolution timer resolution, 5× 12-bit SAR ADCs (5 MSPS dual-mode sampling), eLQFP176 package compatibility, and ISO/SAE 21434 cybersecurity compliance via embedded HSM.

Technical Context

This MCU implements a split-lock dual Cortex®‑M7 architecture supporting either parallel execution (2× 300 MHz) or lockstep safety mode with paired DMA engines, FCCU failure handling, MEMU memory error reporting, and CRC units - all aligned to ISO 26262 ASIL-D requirements. The HSM subsystem uses a dedicated 150 MHz Cortex®‑M0+ core with 160 KB flash and 40 KB RAM, enabling EVITA Medium–compliant cryptographic services including AES-128/256, GCM, and TRNG.

Peripherals are optimized for wide-bandgap control: two HRTIM modules deliver 24× PWM outputs with 102 ps timing resolution; five independent 12-bit SAR ADCs achieve up to 5 MSPS in dual mode; two 16-bit sigma-delta ADCs (333 ksps OSR=24) are available only in eLQFP176; and four MCAN-FD interfaces share 16 KB message RAM for deterministic real-time communication.

Key Specifications

Pinout & Package

eLQFP176 package (24 × 24 × 1.4 mm), thermally enhanced with exposed pad; supports full peripheral set including all 2× HRTIM, 2× sigma-delta ADCs, 4× MCAN-FD, and parallel trace port (1–8 lines).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance automotive MCU applications.

Compared with NXP S32K398 and Renesas RH850/U2A, SR5E1E770C30F00X uniquely combines dual M7 lockstep execution, 102 ps timer resolution, and integrated sigma-delta ADCs - making it optimal for wide-bandgap power stage control where analog precision, timing determinism, and safety-certified OTA updates are co-dependent requirements.

Availability

SR5E1E770C30F00X is available at Aetrix Electronics and suitable for traction inverter development, on-board charger production, and 48 V DC/DC converter design requiring stable component supply across automotive OEM and Tier-1 programs.

Supply support for SR5E1E770C30F00X 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, delivering intelligent power, sensing, and control solutions for automotive, industrial, and consumer markets.

The SR5E1E7 line belongs to the Stellar electrification MCU family - engineered specifically for digital control of silicon carbide and gallium nitride power converters, emphasizing real-time determinism, ASIL-D safety, and secure over-the-air updates in electric vehicle powertrain systems.

FAQ

What is the maximum junction temperature rating for SR5E1E770C30F00X?

The SR5E1E770C30F00X is rated for operation up to 150°C junction temperature, validated per AEC-Q100 Grade 0 specifications. This enables deployment in high-thermal-load locations such as traction inverter control boards mounted near power modules, provided PCB thermal design meets the 2.5°C/W max θ_JA requirement specified in DS13808 Rev 8.

Does SR5E1E770C30F00X support CAN-FD with flexible data-rate operation?

Yes - SR5E1E770C30F00X integrates four fully compliant MCAN modules supporting ISO 11898-1:2015 CAN-FD, including bit-rate switching, payload up to 64 bytes, and shared 16 KB message RAM. Each MCAN supports programmable TX/RX buffers, hardware filtering, and time-triggered communication modes for deterministic network scheduling.

How is the HSM (Hardware Security Module) physically isolated from the main application cores?

The HSM is implemented as a dedicated Cortex®‑M0+ subsystem clocked at 150 MHz, with private 160 KB flash, 40 KB RAM, and 32 KB data flash - all electrically and logically isolated via SMPU and firewall registers. Communication occurs only through defined mailbox interfaces with hardware-enforced access control, preventing unauthorized read/write access from the M7 cores.

Can the 16-bit sigma-delta ADCs be used simultaneously with all five 12-bit SAR ADCs?

Yes - both sigma-delta ADCs and all five SAR ADCs operate independently and concurrently. However, the two sigma-delta ADCs are only available in the eLQFP176 package (SR5E1E7), while SAR ADCs are present across all variants. Their combined use enables synchronized high-precision temperature sensing (sigma-delta) alongside fast current/voltage sampling (SAR) in multi-sensor motor control loops.