company blog about Infineon SAK-TC336DA-32F300S AA 32-Bit Single-Chip Automotive AURIX™ TC3 MCU

Infineon SAK-TC336DA-32F300S AA 32-Bit Single-Chip Automotive AURIX™ TC3 MCU

Shenzhen Mingjiada Electronics Co., Ltd. supplies and recycles the Infineon SAK-TC336DA-32F300S AA 32-bit automotive-grade AURIX™ TC3 MCU.

I. Product Positioning and Series Classification

The SAK-TC336DA-32F300S AA is a 32-bit TriCore™ automotive-grade microcontroller launched by Infineon. It belongs to the second-generation AURIX™ TC33xDA series and is specifically designed for high-performance, high-safety and high-real-time automotive electronics applications, whilst also catering to extended applications such as industrial radar. This chip inherits the AURIX™ family’s robust automotive-grade DNA, fully addressing the demands of automotive intelligence and electrification upgrades. It has been comprehensively optimised in terms of computing power, memory, communication, functional safety and information security, serving as the core computing platform for in-vehicle radar, body control and safety assistance systems.

As an automotive-grade dedicated MCU, the SAK-TC336DA-32F300S AA has been developed in strict compliance with automotive electronics industry standards. It can reliably operate under demanding in-vehicle conditions whilst offering high integration, effectively reducing peripheral circuitry and system complexity. This enables automotive manufacturers and solution providers to deliver low-cost, high-performance products.

II. Core Architecture and Computational Performance

The SAK-TC336DA-32F300S AA features a dual-core TriCore™ processor architecture, with both cores operating at up to 300 MHz. Paired with a dedicated verification core, the overall computational performance reaches 1,400 DMIPS, capable of meeting the real-time processing demands of standard in-vehicle control systems whilst also supporting high-intensity computational scenarios such as radar signal processing. The TriCore™ architecture integrates the advantages of RISC, CISC and DSP, balancing computational efficiency, instruction density and real-time responsiveness, thereby perfectly meeting the stringent requirements of automotive electronics for low latency and high stability.

Tailored for dedicated in-vehicle radar applications, the chip incorporates a built-in SPU (Signal Processing Unit) capable of efficiently handling radar data analysis, computation and transmission. This significantly reduces the load on the main processor, enhancing the overall response speed and detection accuracy of the radar system. It is compatible with 24GHz and 77GHz in-vehicle radar solutions, whilst also supporting 60GHz industrial-grade ultra-wideband radar applications.

III. Core Memory Configuration

The SAK-TC336DA-32F300S AA is equipped with high-capacity memory units featuring ECC error correction protection, comprehensively eliminating data errors and packet loss under complex in-vehicle operating conditions to ensure system stability:

- Program Flash: Up to 2MB Flash, with full-range ECC error correction support, capable of reliably storing in-vehicle control programs and calibration data, and supporting repeated erasure and programming as well as over-the-air updates;

- Random Access Memory (RAM): Up to 1.5MB SRAM, also equipped with an ECC error correction mechanism, balancing high-speed data read/write capabilities with operational data reliability to meet the demands of multi-core parallel processing and massive data caching;

- Dedicated Radar Cache: Built-in optimised embedded RAM specifically designed for radar applications, tailored for corner radar use to further enhance radar data processing efficiency.

IV. Automotive-Grade Functional Safety and Information Security

Functional Safety Features

The SAK-TC336DA-32F300S AA has been designed and developed in full compliance with the ISO 26262 automotive functional safety standard and the IEC 61508 industrial safety standard. It supports systems in achieving the **highest safety levels of ASIL-D/SIL3**, meeting the design requirements for critical safety components such as braking, steering and radar sensing. Equipped with comprehensive fault detection and fault-tolerance mechanisms, coupled with a hardware-level safety monitoring unit, it can monitor the system’s operational status in real time, respond rapidly to faults and execute safety protection actions, thereby eliminating potential driving safety hazards.

Information Security Protection

The SAK-TC336DA-32F300S AA integrates an EVITA Full HSM hardware security module, supporting mainstream encryption algorithms such as ECC256 and SHA-2 and other mainstream encryption algorithms. It offers high-strength data encryption, identity authentication and secure boot functions, effectively defending against security threats such as unauthorised intrusion into the in-vehicle network, data tampering and firmware cracking. It is suitable for high-security scenarios such as in-vehicle OTA updates and V2X communications, ensuring the information security of the vehicle’s electronic systems.

V. Comprehensive Communication Peripheral Interfaces

The SAK-TC336DA-32F300S AA is equipped with a diverse range of in-vehicle communication interfaces, fully compatible with in-vehicle network topologies. It supports high-speed data transmission and multi-device coordination, with peripheral configurations designed to balance compatibility and transmission efficiency:

- High-speed communication: 1 Gigabit Ethernet port, meeting the requirements for high-speed in-vehicle data transmission and high-definition video transmission; 4 x 400 Mbit/s LVDS radar-dedicated interfaces, enabling low-latency, high-stability transmission of radar data;

- In-vehicle Buses: 4 x CAN FD interfaces, compatible with traditional CAN buses, enhancing in-vehicle bus data transmission bandwidth and speed; 5 x ASCLIN interfaces, 4 x QSPI interfaces, and 1 x I²S emulation interface, supporting communication with various in-vehicle sensors and actuators;

- Dedicated Interfaces: 6 SENT interfaces, suitable for direct connection to in-vehicle analogue sensors such as temperature, pressure and position; dedicated RIF radar/external ADC interfaces, simplifying radar front-end circuit design.

VI. SAK-TC336DA-32F300S AA Electrical and Packaging Characteristics

- Supply Voltage: Supports single-supply 5V or 3.3V operation, compatible with mainstream automotive power supply solutions, reducing the complexity of peripheral power circuit design;

- Power Consumption Control: Built-in standby mode controller supporting multi-level low-power modes; power consumption can be maintained at an extremely low level during vehicle hibernation, meeting automotive low-power design requirements, with typical operating power consumption below 1W;

- Operating Temperature: Operates within a wide temperature range of -40°C to +125°C, perfectly suited to harsh in-vehicle conditions such as extreme cold, high temperatures and vibration, ensuring stable and reliable long-term operation;

- Package Type: Utilises a BGA-180 package (12mm × 12mm), offering a compact form factor suitable for space-constrained automotive electronic module designs, whilst ensuring thermal performance and pin reliability.

VII. SAK-TC336DA-32F300S AA Software Ecosystem and Compatibility

Fully supports AUTOSAR 4.2 and later versions, compatible with mainstream automotive software development frameworks. It integrates seamlessly with AUTOSAR MCAL low-level drivers, safety software libraries and complex device drivers, significantly reducing the development cycle for automotive electronics projects. It is also hardware and software compatible with Infineon’s TC39xXA and TC35xTA series chips, facilitating platform-based and modular design for solution providers and enabling rapid iteration of products with varying levels of computing power.

8. Key Application Scenarios for the SAK-TC336DA-32F300S AA

Core Automotive Electronics Scenarios

- In-vehicle radar systems: 24GHz and 77GHz corner radars and forward-facing radars, enabling ADAS functions such as blind spot monitoring, lane change assistance, collision warning and automatic emergency braking;

- Vehicle safety control systems: modules such as body domain controllers, door control, lighting control and seat control, balancing real-time control with safe operation;

- New energy vehicle components: battery management auxiliary systems, on-board charging control systems and motor auxiliary control units;

- Other safety-critical in-vehicle equipment: tyre pressure monitoring, anti-theft systems and on-board diagnostic modules.

Industrial Applications

Industrial control scenarios with high demands for safety and real-time performance, such as 60GHz industrial ultra-wideband radar, collision warning for industrial robots, smart sensing devices, contactless vital signs monitoring, and industrial automation control.

IX. Summary of Core Product Advantages

The SAK-TC336DA-32F300S AA, built upon Infineon’s mature AURIX™ TC3 series platform, delivers four core advantages: high-performance computing power, high-level security, highly integrated peripherals, and stable operation across a wide temperature range. It precisely meets the stringent requirements for in-vehicle MCUs driven by the intelligent upgrade of automobiles. With a dedicated radar processing unit, comprehensive automotive-grade security mechanisms and a wealth of in-vehicle communication interfaces, this chip is the preferred solution for in-vehicle radar and mid-to-high-end body control applications. It is equally suited to industrial applications, offering exceptional adaptability to diverse scenarios and strong product competitiveness.