The ATTINY85-20SU is a high-performance, low-power 8-bit AVR RISC-based microcontroller from Microchip (formerly Atmel). It combines 8KB ISP Flash memory, 512B SRAM, 512B EEPROM, 6 general purpose I/O lines, 32 general purpose working registers, an 8-bit Timer/Counter with compare modes, a 10-bit ADC, programmable watchdog timer with internal oscillator, SPI serial interface and three software selectable power saving modes. The device operates between 1.8-5.5V.

Applications:

• Small Embedded Systems: Ideal for simple control and monitoring applications where a small footprint and low power consumption are important.
• Sensor Networks: Can be used as a node in a sensor network for data acquisition and processing.
• Remote Controls: Suitable for use in remote controls for various devices.
• Lighting Control: Can be used for controlling LEDs and other lighting elements.
• Wearable Electronics: Suitable for use in wearable devices due to its small size and low power consumption.

Features:

• High-performance, Low-power AVR 8-Bit Microcontroller: Delivers excellent performance while consuming minimal power.
• Advanced RISC Architecture: Provides efficient instruction execution.
• 8KB of In-System Self-Programmable Flash Program Memory: Allows for easy firmware updates.
• 512B EEPROM: Provides non-volatile storage for configuration data and user settings.
• 512B SRAM: Provides volatile memory for data storage and processing.
• Six I/O Lines: Offers flexible connectivity to external devices.
• 10-bit ADC: Allows for analog signal measurement and conversion.
• Programmable Watchdog Timer: Ensures system stability and prevents lockups.
• SPI Serial Interface: Enables communication with other SPI devices.
• Power-saving Modes: Reduces power consumption in low-activity periods.

Benefits:

• Versatile: Can be used in a wide range of applications due to its flexible features and functionalities.
• Low Power: Suitable for battery-powered applications.
• Easy to Program: Uses the AVR instruction set, which is widely supported and well-documented.
• Small Footprint: The small package size allows for integration into compact devices.
• Cost-Effective: Provides a cost-effective solution for embedded control applications.

Additional Details:

The ATTINY85-20SU operates at a maximum frequency of 20 MHz. It is available in a SOIC-8 package. The operating voltage range is 1.8V to 5.5V. It supports multiple power-saving modes, including idle, ADC noise reduction, and power-down. The device has a robust set of peripherals that make it suitable for a wide range of applications.