ATMEGA328-PU

The ATMEGA328-PU is a low power CMOS 8 bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATMEGA328-PU achieves throughputs approaching 1MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

• 131 powerful instructions, most single clock cycle execution
• 32 x 8 general purpose working registers
• Fully static operation
• Up to 20MIPS throughput at 20MHz
• On-chip 2-cycle multiplier
• 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
• Atmel® QTouch® library support
• Capacitive touch buttons, sliders and wheels
• QTouch and QMatrix® acquisition
• Up to 64 sense channels
• Two 8bit timer/counters with separate prescaler and compare mode
• One 16 bit timer/counter with separate prescaler, compare mode, and capture mode
• Real time counter with separate oscillator
• Six PWM channels
• Programmable serial USART
• Serial peripheral interface (SPI)
• Byte oriented 2 wire serial interface
• Programmable watchdog timer with separate on chip oscillator
• On chip analogue comparator
• Interrupt and wake up on pin change
• Power on reset and programmable brown out detection

Note

New IC marking code is implemented, instead ATMEGA328 -PU used ATMEGA328 -U.