ATtiny85 AVR 8-Bit Microcontroller IC SOP-8

ATtiny85 AVR 8-Bit Microcontroller IC SOP-8 is a high-performance, low-power RISC-based microcontroller that delivers substantial processing capabilities within an exceptionally small 8-pin footprint. Furthermore, this versatile chip provides developers with 8 KB of in-system programmable flash memory, 512 bytes of EEPROM, and 512 bytes of internal SRAM. Consequently, it excels in space-constrained applications where functionality and efficiency are paramount. By leveraging the advanced AVR architecture, the ATtiny85 supports high-speed execution of powerful instructions in a single clock cycle, achieving throughputs approaching 1 MIPS per MHz. Therefore, you can easily implement sophisticated control logic, PWM signals, or analog-to-digital conversions in your most compact electronic designs without sacrificing performance.

Key Features:

• High-Performance RISC Core: The 8-bit AVR processor executes 120 powerful instructions, most within a single clock cycle, maximizing processing efficiency.
• Integrated Memory: Features 8 KB of self-programmable flash, 512 bytes of EEPROM for data retention, and 512 bytes of SRAM for temporary data storage.
• Peripheral Versatility: Includes two 8-bit timer/counters, four ADC channels with 10-bit resolution, and a programmable watchdog timer with an internal oscillator.
• Advanced Power Management: Offers three distinct software-selectable power-saving modes, making it an ideal choice for battery-operated handheld devices.
• Compact SOP-8 Package: The surface-mount Small Outline Package (SOP) saves significant PCB real estate compared to traditional DIP variants.

Technical Specifications:

• Operating Voltage: 2.7 V to 5.5 V (for ATtiny85)
• Maximum Speed: Up to 20 MHz (at 4.5 V – 5.5 V)
• Flash Memory: 8 KB (Endurance: 10,000 Write/Erase Cycles)
• EEPROM: 512 Bytes (Endurance: 100,000 Write/Erase Cycles)
• SRAM: 512 Bytes
• I/O Pins: 6 Programmable I/O Lines
• A/D Converter: 10-bit resolution, 4-channel ADC
• Operating Temperature: −40°C to +85°C (Industrial Grade)

Mechanical Specifications:

• Package Type: SOP-8 / SOIC-8 (Surface Mount)
• Lead Count: 8 Pins
• Body Material: Molded Plastic
• Lead Finish: Matte Tin or Lead-free plating
• Moisture Sensitivity Level: MSL 1 (Unlimited floor life)

Dimensions:

• Body Width: ≈ 3.90 mm
• Body Length: ≈ 4.90 mm
• Overall Height: ≈ 1.75 mm
• Pin Pitch: 1.27 mm (Standard SOIC spacing)
• Weight: ≈ 0.08 g

Pinout and Wiring:

• Pin 1 (PB5/RESET): Primary Reset pin or programmable I/O pin.
• Pin 2 (PB3): Programmable I/O; also serves as XTAL1 or ADC3.
• Pin 3 (PB4): Programmable I/O; also serves as XTAL2 or ADC2.
• Pin 4 (GND): Connect to the circuit common ground (0 V).
• Pin 5 (PB0/MOSI): Programmable I/O; primary data input for SPI programming.
• Pin 6 (PB1/MISO): Programmable I/O; primary data output for SPI programming.
• Pin 7 (PB2/SCK): Programmable I/O; clock input for SPI communication and ADC1.
• Pin 8 (VCC): Connect to the positive supply voltage (2.7 V to 5.5 V).

Datasheet Reference:

• Download Microchip ATtiny85 Datasheet

Commonly Used in:

• Digispark USB Development: Serves as the core processor for miniature Arduino-compatible development boards.
• Wearable Tech: Powers low-profile electronic jewelry, smart textile controllers, and fitness trackers.
• Custom USB Peripherals: Implements software-based USB stacks (V-USB) for keyboards and mice.

Applications:

• Sensor Interfacing: Reading data from thermistors, LDRs, or accelerometers via the internal ADC.
• PWM Control: Managing the brightness of LEDs or controlling the speed of small DC motors.
• Security Systems: Functioning as a controller for small-scale alarm systems and electronic locks.
• Home Automation: Executing simple smart home tasks like automated lighting or temperature logging.

Equivalent Models:

• ATtiny45: Features the same architecture but offers 4 KB of flash memory.
• ATtiny25: A cost-effective variant with 2 KB of flash memory for simpler tasks.
• PIC12F675: However, this Microchip PIC alternative requires a different instruction set and development environment.

Package Includes:

• 1 x ATtiny85 AVR 8-Bit Microcontroller IC SOP-8