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To help engineers minimize design cost and complexity in the face of stringent safety requirements, Microchip Technology Inc. AVR SD series MCU (MCU) is officially launched. Designed for applications requiring high reliability verification with integrated functional safety mechanisms and priced at less than $1, this family of microcontrollers is the first entry-level microcontroller to meet automotive Safety Integrity Level C (ASIL C) and Safety Integrity Level 2 (SIL 2) requirements in this price segment. This series of microcontroller functional safety management system has passed the certification of TuV Rheinland, which further enhances the safety performance.

The AVR SD series of microcontrollers has several hardware safety features, including a dual-core lockstep CPU, a dual-mode digital-to-analog converter (ADC), full-memory error correction code (ECC), a dedicated error control module, error injection mechanism, and voltage and clock monitors. These features significantly reduce fault detection time and software complexity, supporting fault detection time Interval (FDTI) goals as low as 1 millisecond, effectively preventing hazardous conditions and improving system reliability.

Used in conjunction with Microchip's security framework software, this family of microcontrollers autonomously manages functional safety diagnostics, detects and handles errors, and triggers a security state when necessary. This series of microcontrollers can be used as the main processor to achieve key functions such as detecting thermal runaway or monitoring sensor data such as rotation position with minimal power consumption. It is also an excellent candidate for coprocessors in complex systems, mirroring or offloading safety-critical functions for applications with high safety integrity levels up to ASIL D and SIL 3.

"When designing safety-critical applications, engineers often have to work with expensive and complex devices," said Greg Robinson, Microchip's corporate vice president in charge of MCU. By integrating specific security features directly into entry-level MCUS and providing a supporting software framework, we are helping our customers meet stringent security standards with greater efficiency. With the AVR SD family, designers can significantly reduce development time and minimize system and certification costs."

AVR SD series microcontrollers comply with ISO 26262 (automotive) and IEC 61508 (industrial) international safety standards and are suitable for aerospace and defense, industrial automation, automotive and medical fields. These include flight control systems, ignition control, robotic safety features, advanced driver assistance systems (ADAS), and medical infusion pumps. Please visit Microchip's website to learn more about the company's full line of AVR MCUS and functional safety products.

Development tool

Developers can build on the TuV SUD-certified MPLAB XC8 Pro compiler and Microchip Curiosity Nano development board, supported by functional safety packages. These include safety documentation (failure mode, impact and diagnostic analysis reports, safety manuals, dependency failure analysis reports), safety software, and compliance reports.

Supply and pricing

AVR SD Microcontroller (MCU) prices start at $0.93 per piece (per 5000 pieces), bulk purchase can enjoy lower discounts. For more information or to make a purchase, please contact a Microchip sales representative, authorized distributors worldwide, or visit Microchip's Purchasing and Customer Service website at www.microchipdirect.com.

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