The Microchip ATTINY25V-10SU is a low-power 8-bit AVR microcontroller with 2 KB Flash, 128 B SRAM, and 128 B EEPROM in an 8-pin SOIC package. Running up to 10 MHz at 1.8–5.5 V, it offers 6 GPIOs, a 4-channel 10-bit ADC, timers, USI for SPI/I²C, an analog comparator, and multiple low-power modes, making it ideal for compact, battery-powered embedded designs.