The ATtiny85 is a compact, 8-pin microcontroller from Atmel, built on an efficient 8-bit RISC architecture. Designed for high performance and low power consumption, it integrates 8KB ISP Flash memory, 512B SRAM, 512B EEPROM, and 6 general-purpose I/O lines.
It features 32 working registers, a standard 8-bit timer/counter with compare modes, a high-speed 8-bit timer, Universal Serial Interface (USI), internal and external interrupts, and a 4-channel 10-bit ADC. Additional features include a programmable watchdog timer with internal oscillator, three software-selectable power-saving modes, and debugWIRE for on-chip debugging.
Operating between 2.7V and 5.5V, the ATtiny85 delivers up to 20 MIPS at 20 MHz. By executing instructions in a single clock cycle, it achieves up to 1 MIPS per MHz, offering an excellent balance of processing speed and energy efficiency for space-constrained and low-power embedded applications.