STMicroelectronics SR5E1x Stellar E 32-bit Automotive MCUs

STMicroelectronics SR5E1x Stellar E 32-bit Arm® Cortex®-M7 Automotive MCUs are designed to meet the enhanced digital control and high-performance analog for wide bandgap power technologies, silicon carbide/GAN, and power conversion applications. The SR5E1x MCUs offer superior real-time and safe performance with high ASIL-D capability, security cryptographic services (HSM), and high-efficiency over-the-air (OTA) reprogramming capability. These features enable the continuous optimization of performance and post-sale upgrades of vehicle functions. The SR5E1x Stellar E 32-bit Arm® Cortex®-M7 Automotive MCUs are available in two variations: a 14mm² TQFP100 (SR5E1E3) package and a 24mm² LQFP176 (SR5E1E7) package. Applications include onboard chargers, DC/DC converters, and advanced motor control like traction inverters.

Stellar Platform

STMicroelectronics SR5E1x Stellar E 32-bit Automotive MCUs

Features

AEC-Q100 automotive qualification pending
Digital and analog high-frequency control requested by wide-bandgap technologies (Silicon Carbide and Gallium Nitride)
High-speed security cryptographic services (HSM)

Superior real-time and functional safety performance (ASIL-D capability)
Built-in fast and cost-optimized OTA (over-the-air) reprogramming capability (with built-in dual image storage)

Specifications

Cores
- 2x 32-bit Arm® Cortex®‑M7 with double-precision FPU, L1 cache, and DSP instructions (Split-lock configuration, allowing either 2 cores in parallel or 1 core in lockstep configuration)
- 2x DMA engines in lockstep configuration
Memory
- Up to 2MB on-chip Flash memory with read/write support
  - 1920KB code Flash memory split in two banks allowing 960KB OTA reprogramming support
  - 160KB HSM dedicated code Flash memory
- 96KB data Flash memory (64KB + 32KB dedicated to HSM)
- 488KB on-chip general-purpose SRAM
  - 2x 32KB instruction TCM + 2x 64KB data TCM
  - 256KB system RAM
  - 40KB HSM dedicated system RAM
Hardware security module (HSM)
- On-chip high-performance security module with dedicated RAM and Flash
- Based on Cortex®‑M0+ core
- Hardware accelerator for symmetric cryptography
Safety (comprehensive generation ASIL-D safety concept)
- State of the art safety measures at all levels of the architecture for efficient implementation of ISO26262 ASIL-D functionalities
- FCCU for collection and reaction to failure notifications with enhanced configurability
- Memory error management unit (MEMU) for collection and reporting of error events in memories
- Cyclic redundancy check (CRC) unit

Enhanced peripherals for fast control loop capability
- 12x timers
  - 2x HRTIM (high-resolution and complex waveform builder)
  - 2x advanced control timers
  - 2x 32-bit + 4x 16-bit general-purpose timers
  - 2x basic timers
- Enhanced analog-to-digital converter system
  - 5x SAR analog converters
  - 2x sigma-delta analog converters
- Digital-to-analog converters (DAC)
  - 2x buffered external channels
  - 8x unbuffered internal channels
- 8x comparators
- 1x CORDIC hardware accelerator for trigonometric functions acceleration
Communication interfaces
- 4x modular controller area network (MCAN) modules, all supporting flexible data rate (ISO CAN-FD)
- 3x UART modules with LIN functionality
- 4x serial peripheral interface (SPI) modules, 2x multiplexed with I²S interfaces
- 2x I²C modules
Advanced debug and trace for high-performance automotive application development
- Built around Arm® CoreSight™-600
- Arm® CoreSight™ JTAG (IEEE 1149.1) or SWD Debug interface
- Embedded trace FIFO for both on- and off-chip tracing
- Trace port for off-chip tracing, parallel trace port configurable from 1 to 8 data lines

STMicroelectronics SR5E1x Stellar E 32-bit Automotive MCUs

Stellar Platform

Features

Specifications

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