The ATMEGA328-PU is an 8-bit microcontroller based on the AVR-enhanced RISC architecture. It executes powerful instructions in a single clock cycle, achieving a high throughput of up to 20MIPS at 20MHz. The microcontroller features 32 x 8 general-purpose working registers, fully static operation, and an on-chip 2-cycle multiplier. It offers flash memory with 10,000 write/erase cycles, EEPROM with 100,000 cycles, and an optional boot code section with independent lock bits. Key peripherals include timers/counters, PWM channels, USART, SPI, 2-wire serial interface, watchdog timer, analog comparator, and interrupt capabilities. The ATMEGA328-PU is suitable for applications requiring low-power operation and high performance.

Key Features:

• 131 powerful instructions, most executed in a single clock cycle
• 32 x 8 general-purpose working registers
• Fully static operation for enhanced stability
• Up to 20MIPS throughput at 20MHz
• On-chip 2-cycle multiplier for efficient arithmetic operations
• Flash memory with 10,000 write/erase cycles and EEPROM with 100,000 cycles
• Optional boot code section with independent lock bits for enhanced security
• In-system programming capability via on-chip boot program
• True read-while-write operation for seamless data handling
• Programming lock for software security
• Atmel® QTouch® library support for capacitive touch buttons, sliders, and wheels
• Up to 64 sense channels for QTouch and QMatrix® acquisition