Microcontroller ATmega8535 is one 8-bit microcontroller family Atmel AVR artificial. In 1997 Atmel developed the AVR (Alf and Vegard's RISC Processor). ATmega8535 microcontroller uses a RISC architecture (Reduced Instruction Set Computing). Some of the features of the ATmega8535 is a RISC-based microcontroller with a maximum speed of 16 MHz, 8K Bytes of Flash memory, 512 Bytes EEPROM (Electrically Erasable Programmable Read Only Memory), and 512 Bytes Internal SRAM. Microcontroller ATmega8535 has two 8-bit Timer / Counter, RTC (Real Time Counter), 4 PWM channel, 8-channel 10-bit ADC, 1 programmable serial USART, master / slave SPI serial interface, and has 32 programmable I / O. As for power, ATmega 8535 can be powered using a voltage of 2.7 - 5.5V (for ATmega8535L) and 4.5 - 5.5V (for ATmega8535) with a maximum clock frequency is 16MHz.