The ATA6663 is a System Basis Chip (SBC) integrating a LIN transceiver, a voltage regulator, and a watchdog timer. It is manufactured by Microchip (formerly Atmel) and designed primarily for automotive applications requiring robust and reliable communication and system supervision. This highly integrated solution minimizes external components and simplifies the design of LIN-based automotive electronic control units (ECUs).

Applications:

• Automotive body control modules (BCM)
• Automotive gateway modules
• Automotive sensor interfaces
• Automotive lighting control
• Automotive climate control
• Industrial control systems using LIN communication with safety requirements

Features:

• LIN transceiver compliant with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A and SAE J2602
• Integrated 5V voltage regulator with short-circuit and overtemperature protection
• Watchdog timer for system supervision
• Low quiescent current in sleep mode
• Wake-up capability via LIN bus and dedicated wake-up input
• Overtemperature protection for LIN transceiver and voltage regulator
• Short-circuit protection for LIN transceiver and voltage regulator outputs
• Optimized for low electromagnetic emissions (EME)
• Provides physical layer interface for LIN communication
• Supports LIN bus speeds up to 20 kbps

Benefits:

• Reduced system cost and complexity due to high integration
• Improved system reliability with watchdog timer and protection features
• Lower power consumption in sleep mode, extending battery life
• Simplified system design and layout
• Enhanced safety features for automotive applications
• Compliant with industry standards for LIN bus communication, ensuring interoperability
• Minimized electromagnetic emissions (EME), reducing interference with other electronic systems

Additional Details:

The ATA6663 is typically supplied from a voltage range compatible with automotive battery systems (e.g., 7V to 18V). The integrated 5V voltage regulator provides a stable supply for the microcontroller and other onboard components. The watchdog timer monitors the microcontroller's activity and resets the system if it detects a failure. The device supports both LIN bus wake-up and a dedicated wake-up input, providing flexible power management options. The overtemperature and short-circuit protection features ensure robust operation in harsh automotive environments. The device is designed to minimize electromagnetic emissions. It supports bit rates up to 20 kbit/s as defined by the LIN standard. The ATA6663 is typically available in a QFN package.