ATmega328P Datasheet | Atmel

Features - High performance, low power AVR® 8-bit microcontroller - Advanced RISC architecture - 131 powerful instructions - most single clock cycle execution - 32  8 general purpose working registers - Fully static operation - Up to 16MIPS throughput at 16MHz - On-chip 2-cycle multiplier - High endurance non-volatile memory segments - 32K bytes of in-system self-programmable flash program memory - 1Kbytes EEPROM - 2Kbytes internal SRAM - Write/erase cycles: 10,000 flash/100,000 EEPROM - Optional boot code section with independent lock bits - In-system programming by on-chip boot program - True read-while-write operation - Programming lock for software security - Peripheral features - Two 8-bit Timer/Counters with separate prescaler and pare mode - One 16-bit Timer/Counter with separate prescaler, pare mode, and capture mode - Real time counter with separate oscillator - Six PWM channels - 8-channel 10-bit ADC in TQFP and QFN/MLF package - Temperature measurement - Programmable serial USART - Master/slave SPI serial interface - Byte-oriented 2-wire serial interface (Phillips I2C patible) - Programmable watchdog timer with separate on-chip oscillator - On-chip analog parator - Interrupt and wake-up on pin change - Special microcontroller features - Power-on reset and programmable brown-out detection - Internal calibrated oscillator - External and internal interrupt sources - Six sleep modes: Idle, ADC noise reduction, power-save, power-down, standby, and extended standby 7810D-AVR-01/15 - I/O and packages - 23 programmable I/O lines - 32-lead TQFP, and 32-pad...