The ATtiny85 packs a surprising amount of processing power into a minimal 8-pin footprint. Built on Atmel’s advanced RISC architecture, it features 8KB of self-programmable Flash memory, 512 bytes of SRAM, and 512 bytes of EEPROM. With an internal precision oscillator and multi-channel 10-bit ADC, it allows makers to run sophisticated programs without needing a bulky development board.
Key Features
Ultra-Compact 8-Pin Design: Ideal for space-constrained applications, wearables, custom breakout boards, and stealth electronics.
Generous Flash Memory for Size: 8KB of ISP Flash program memory gives you plenty of room for complex Arduino sketches or AVR-C code.
Internal Oscillator: Operates smoothly up to 8 MHz or 16 MHz internally, eliminating external crystal requirements for most projects.
Analog & PWM Capabilities: Features multiple 10-bit ADC channels and hardware PWM output pins for sensor reading and motor/LED dimming.
Low Power Consumption: Exceptional power efficiency tailored for coin-cell battery operation.
Technical Specifications
Feature
Specification
Microcontroller Core
8-bit AVR RISC
Max Speed
20 MHz
Flash Program Memory
8 KB
SRAM / EEPROM
512 Bytes SRAM / 512 Bytes EEPROM
Digital I/O Pins
6 Programmable I/O Lines
ADC Channels
4-channel, 10-bit A/D Converter
Operating Voltage
2.7V – 5.5V (ATtiny85V variant down to 1.8V)
Weight
5.6 g
Dimensions
5.2 × 1.4 × 4.5 cm
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