Shenzhen Mingjiada Electronics Co., Ltd. supplies and recycles the Infineon SAL-TC397XP-256F300S BD high-performance 32-bit AURIX™ TC3 single-chip microcontroller (MCU).
The Infineon SAL-TC397XP-256F300S BD is a high-performance 32-bit single-chip microcontroller (MCU) based on the AURIX™ TC3 series architecture. With its core strengths lying in multi-core parallel processing, high-security redundant design, a rich array of peripheral interfaces and wide temperature range capability, it is specifically designed for high-end automotive electronics, industrial automation, and other high-end application scenarios with stringent requirements for real-time performance, safety and reliability, serving as a core component linking intelligent control with safety protection.
I. Core Architecture and Performance: Multi-core Driven, High-efficiency Computing Power
The SAL-TC397XP-256F300S BD utilises Infineon’s proprietary TriCore™ TC1.6.2P 32-bit core architecture, innovatively integrating the technical strengths of RISC (Reduced Instruction Set Computing), DSP (Digital Signal Processing) and real-time control systems to achieve a ‘three-in-one’ high-efficiency processing capability. This enables both rapid response to control commands and the efficient execution of complex data computations. Its core configuration employs a 6-core parallel design, whilst integrating four lockstep shadow cores to form a ‘main core + shadow core’ redundant architecture. The main and shadow cores execute instructions synchronously and verify computational results in real time, effectively mitigating the risk of single-core hardware failures and providing fundamental safeguards for functional safety.
In terms of computational performance, each core of the SAL-TC397XP-256F300S BD supports a maximum operating frequency of 300 MHz, delivering an overall computational power of 4,000 DMIPS. It incorporates fully pipelined floating-point units (FPUs) and multiply-accumulate (MAC) units, capable of performing two MAC operations per cycle. This significantly enhances the efficiency of floating-point calculations and digital signal processing, enabling it to effortlessly handle the demands of multi-task parallel processing in complex scenarios such as powertrain control for new energy vehicles and motion control for industrial robots. Furthermore, optimised designs such as zero-overhead loops and branch prediction further reduce instruction execution latency, ensuring the system’s real-time response performance.
II. Key Parameters and Memory Configuration: Ample Capacity, Stable and Reliable
The SAL-TC397XP-256F300S BD is equipped with a high-capacity, highly reliable on-chip memory system, utilising a ‘Flash+RAM’ hierarchical design that balances programme storage with data read/write efficiency. Specific parameters are as follows:
- Programme Memory: Utilises Flash storage media with a capacity of up to 16MB, supporting ECC (Error Checking and Correction) functionality. This enables the secure storage of large control programmes, firmware code and fault logs, whilst also supporting EEPROM emulation. It incorporates 1MB of DFLASH for data persistence, meeting the long-term data retention requirements of automotive electronics.
- Data memory: Total SRAM capacity reaches 2816 kB, comprising Data Scratch-Pad RAM (up to 240/96 kB), Instruction Scratch-Pad RAM (up to 64 kB), Data RAM (up to 64 kB), as well as a 32 kB instruction cache (ICACHE) and a 16 kB data cache (DCACHE). This enables rapid instruction retrieval and high-speed data access, reducing memory access latency and enhancing overall system efficiency.
Furthermore, the SAL-TC397XP-256F300S BD utilises a 40nm flash memory manufacturing process, with an operating voltage range of 2.97V to 5.5V, with an operating temperature range of -40°C to +125°C. It fully complies with the automotive AEC-Q100 standard, making it suitable for harsh operating environments such as automotive and industrial applications. It offers excellent immunity to interference and environmental adaptability, ensuring stable operation under complex conditions including extreme temperatures and voltage fluctuations. It is packaged in a PG-LFBGA-292 form factor, utilising a surface-mount design that balances miniaturisation with thermal dissipation performance, facilitating integration into high-density PCBs and meeting the design requirements of various compact devices.
III. Safety Features: End-to-End Protection, Meeting High-End Safety Standards
As a microcontroller designed for safety-critical applications, the SAL-TC397XP-256F300S BD is built around the ISO 26262 functional safety standard, achieving ASIL-D/SIL-3 safety levels. It establishes a comprehensive end-to-end safety protection system covering all stages, including chip operation, data transmission and fault diagnosis:
- Hardware Redundancy Design: In addition to the redundant configuration of a 6-core main architecture plus 4-core lockstep shadow cores, the chip integrates a Memory Test Unit (MTU) with ECC, memory initialisation and MBIST capabilities to ensure memory reliability; a Hardware I/O Monitor (IOM) performs real-time digital I/O checks to enhance system robustness.
- Security Management and Encryption: An independent hardware security module (HSM) is built-in, responsible for key management, data encryption/decryption (supporting algorithms such as AES and RSA), secure boot and firmware integrity verification. It is physically isolated from the main core, effectively defending against malicious attacks; The Security Management Unit (SMU) monitors critical parameters such as internal voltage, clock and temperature, as well as the operational status of the core and peripherals in real time. It supports customised fault response strategies to ensure faults are detected and addressed promptly.
- Comprehensive safety support: Covers safety functions across all scenarios, including ADAS processing (ASIL-C), secure computing, analogue/digital acquisition, digital driving, sensor acquisition and external communication (ASIL-D). It supports safety requirements such as safety state maintenance, common-cause fault avoidance and the coexistence of software and hardware elements, and can be directly applied to safety-critical systems without the need for additional safety protection devices.
IV. Peripheral Interfaces: Comprehensive and versatile, catering to diverse connectivity requirements
The SAL-TC397XP-256F300S BD integrates a rich array of peripheral interfaces and communication modules, balancing high-speed transmission with diverse connectivity to flexibly accommodate peripheral expansion requirements across different application scenarios. The core interface configuration is as follows:
- Communication Interfaces: Equipped with 12 CAN nodes (supporting the CAN FD protocol), 12 LIN interfaces, 6 SPI interfaces, as well as Ethernet MAC, FlexRay, I2C, QSPI, SENT, HSSL and other communication modules, enabling high-speed data exchange for in-vehicle networks and industrial fieldbuses. The CAN FD interfaces support high-bandwidth data transmission, making them suitable for applications such as powertrain systems and chassis control, whilst the LIN interfaces cater to low-speed communication requirements such as body electronics.
- Analogue and Digital Peripherals: Integrates 18 ADC modules, supporting high-precision analogue signal acquisition, suitable for the accurate monitoring of critical parameters such as battery voltage and motor current; Equipped with General-Purpose Timer (GTM), Capture/Compare Unit (CCU60/61) and General-Purpose Timer (GPT120) modules, providing precise time management and event triggering, with support for PWM waveform output, suitable for applications such as motor control and lighting control; features 128 built-in DMA channels to enable high-speed data transfer, reducing the CPU load and enhancing system efficiency.
- Other peripherals: Supports eMMC storage expansion and features a watchdog timer, oscillator watchdog and real-time clock. It also integrates an on-chip clock generator and on-chip voltage regulator to optimise the balance between power consumption and performance, whilst reducing the complexity of external circuit design. Supports JTAG or DAP debugging interfaces compliant with the IEEE 1149.1 standard, facilitating development, debugging and fault diagnosis.
V. Application Scenarios: Empowering Upgrades Across Multiple Sectors
Leveraging its core strengths of high performance, high security and high reliability, the SAL-TC397XP-256F300S BD is widely used in automotive electronics, industrial automation, rail transport and other sectors. Specific application scenarios include:
- Automotive Electronics: New energy vehicle powertrain systems (traction inverter motor control, DC-DC converters, Battery Management System (BMS)), chassis control (Electronic Stability Programme (ESP), Electric Power Steering (EPS), braking and stability control), Body Control Module (BCM), Advanced Driver Assistance Systems (ADAS), radar processing, lighting control systems, airbag control ECUs, Transmission Control Units (TCU), etc.
- Industrial Automation: Programmable Logic Controllers (PLCs), industrial robots, distributed control systems, sensor networks, etc., enabling complex real-time control and data processing.
- Other Sectors: Rail transport control systems, medical equipment (high-reliability medical instruments), aerospace, and other applications with stringent safety and performance requirements.
VI. Product Advantages and Core Value
Thanks to its unique technical design, the Infineon SAL-TC397XP-256F300S BD offers significant advantages over comparable products: Firstly, its multi-core lockstep architecture and end-to-end security protection meet the highest safety standard of ASIL-D, enabling direct application in safety-critical systems and reducing system design complexity; Secondly, its high-performance computing power and extensive memory configurations enable it to handle complex multi-tasking requirements, supporting the stable operation of large-scale control programmes; thirdly, its rich peripheral interfaces and wide temperature and voltage tolerance make it suitable for harsh operating environments across multiple sectors; fourthly, a comprehensive development ecosystem and supporting evaluation boards shorten development cycles and reduce development costs.
As a core product of Infineon’s AURIX™ TC3 series, the SAL-TC397XP-256F300S BD not only provides essential computational power for the intelligent upgrade of sectors such as automotive electronics and industrial automation, but also drives the development of safety-critical systems towards miniaturisation, integration and efficiency through its high safety and reliability, thereby helping developers create more competitive end products.
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