Microchip ATmega328 AVR Microcontroller 32KB 20MHz TQFP

The Microchip ATmega328 is a high-performance, low-power 8-bit AVR® RISC-based microcontroller (MCU) featuring picoPower® technology for exceptional energy efficiency. It combines 32kB of in-system programmable flash memory with read-while-write capabilities, 1kB EEPROM, and 2kB SRAM, providing ample storage for complex applications.

This MCU offers 27 general-purpose I/O lines, 32 general-purpose working registers, and five flexible timer/counters with compare modes. It also includes internal and external interrupts, two USARTs with wake-up on start of transmission, two byte-oriented 2-wire serial interfaces, and two SPI serial ports. An 8-channel 10-bit A/D converter enables precise analog measurements.

Engineered for reliability, the ATmega328 operates over a wide voltage range of 1.8V to 5.5V and a temperature range from -40°C to 105°C, with low power consumption. It features a programmable watchdog timer with internal oscillator, a unique serial number, and six software-selectable power-saving modes, making it ideal for battery-powered and embedded systems.

Key Features

• Core: AVR RISC
• Max Frequency: 20MHz
• Program Memory: 32kB ISP Flash
• EEPROM: 1kB
• SRAM: 2kB
• I/O Lines: 27
• Interfaces: I2C, SPI, USART
• ADC: 8-channel, 10-bit
• Package: 32-pin TQFP, surface mount

With its robust feature set and low-power design, the ATmega328 is suitable for a wide range of embedded control and automation projects.