Product Description：

The GD32A722BIT3TB is a compact and security-focused automotive microcontroller from GigaDevice's GD32A722 series. It leverages a modern Arm® Cortex®-M33 core with integrated Arm TrustZone® technology, providing a hardware-rooted foundation for isolating critical software and data. This is complemented by a dedicated Hardware Security Module (HSM), creating a robust, dual-layer security architecture essential for connected and autonomous vehicle functions. Designed to meet AEC-Q100 Grade 2 reliability standards and support ISO 26262 functional safety development, it integrates essential automotive communication interfaces. Housed in a space-saving LQFP100 package, this MCU is the ideal solution for size-constrained automotive ECUs that demand uncompromising security, such as smart sensors, secure access modules, and localized domain controllers.

Key Features：

Secure & Efficient Core: Features an Arm Cortex-M33 processor (typical frequency ~200-250MHz) with built-in Arm TrustZone®. This enables hardware-enforced isolation between secure and non-secure software domains, a critical requirement for secure boot, OTA updates, and protecting cryptographic keys.

Enhanced Hardware Security: Integrates a standalone Hardware Security Module (HSM) with cryptographic accelerators (e.g., AES-256, SHA-2, TRNG, PKA). The HSM works in tandem with TrustZone to provide a secure execution environment and hardware-accelerated cryptography for applications like secure communication (SecOC) and authenticated diagnostics.

Automotive Grade & Safety Ready: Compliant with AEC-Q100 Grade 2 standards (-40°C to +105°C). The architecture is designed to facilitate development according to ISO 26262, targeting ASIL-B functional safety level.

Targeted Automotive Connectivity: Includes a focused set of high-value automotive interfaces, likely comprising:

CAN FD interfaces for in-vehicle networking.

Ethernet (potentially 100BASE-T1) for higher-speed data links.

LIN, SPI, I²C, and UART for peripheral and sensor connectivity.

Adequate On-Chip Memory: Equipped with sufficient embedded Flash and SRAM (scaled for the series and package, e.g., ~1MB Flash, ~256KB SRAM) to host partitioned secure/non-secure application code, communication stacks, and security services.

Essential Analog & Control: Includes analog-to-digital converters (ADC) and general-purpose timers with PWM support for basic sensor interfacing and actuator control.

Compact Form Factor: Packaged in LQFP100, offering a balance between a reduced PCB footprint and good manufacturability for cost-sensitive, space-constrained designs.

Typical Applications：

Secure Smart Sensors: As the processing core for ADAS sensors (e.g., ultrasonic, short-range radar, camera) requiring local data preprocessing and secure communication of integrity-protected data.

Vehicle Access & Immobilizer Systems: In Passive Entry Passive Start (PEPS) controllers, smart door handles, or electronic immobilizers where security is the primary function.

Local/Zone ECU in Zonal Architecture: Acting as a secure I/O aggregator and controller within a vehicle zone, handling local sensors/actuators and communicating securely with the central computer.

Secure Data Loggers & Black Boxes: For recording vehicle data in a tamper-resistant manner, leveraging HSM for data encryption and signature.

Lightweight Telematics Nodes: In compact telematics or V2X modules where secure data collection and transmission are required.

Industrial Safety & Control: For applications in industrial robotics or automation where functional safety and security (e.g., secure remote access) are converging requirements.