ATMEGA168P-20AU Datasheet PDF - ATMEL

The ATMEGA168P-20AU is a 8-bit high-performance picoPower AVR RISC-based Microcontroller combines 16kB ISP flash memory with read-while-write capabilities, 512B EEPROM, 1kB SRAM, 23 general purpose I/O lines, 32 general purpose working registers, three flexible timer/counters with compare modes, internal and external interrupts, serial programmable USART, a byte-oriented 2-wire serial interface, SPI serial port, 6-channel 10-bit A/D converter (8-channel in TQFP and QFN/MLF packages), programmable watchdog timer with internal oscillator and five software selectable power saving modes. The device operates between 2.7 to 5.5V. By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and processing speed. The AVR core combines a rich instruction set with 32 general purpose working registers.

● Advanced RISC architecture - On-chip 2-cycle multiplier

● High endurance, non-volatile memory segments

● QTouch® library support - Capacitive touch buttons, sliders and wheels

● Peripheral features - Real time counter with separate oscillator

● Power-on reset (POR) 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