ATMEL ATmega328 8-Bit AVR Microcontroller, 32KB Flash, 32-TQFP, 2.188g

The ATMEL ATmega328 is a high-performance, picoPower 8-bit AVR RISC-based microcontroller, designed for efficient operation in a wide range of embedded applications. It combines substantial memory resources with versatile peripheral interfaces, all within a compact TQFP package. The device operates on a low voltage range from 1.8V to 5.5V, making it suitable for both battery-powered and line-operated projects.

At its core, it features 32KB of in-system programmable (ISP) flash memory with read-while-write capabilities, 1KB of EEPROM, and 2KB of SRAM. It provides 23 general-purpose I/O lines and 32 general-purpose working registers, supporting flexible and efficient data handling. For timing and control, it includes three flexible timer/counters with compare modes and comprehensive internal and external interrupt support.

Connectivity and Conversion

The microcontroller offers robust serial communication options, including a programmable USART, a byte-oriented 2-wire serial interface (I2C), and an SPI serial port. It is equipped with a 6-channel, 10-bit A/D converter (8 channels in TQFP and QFN/MLF packages), enabling precise analogue signal measurement. System reliability is enhanced by a programmable watchdog timer with an internal oscillator.

Power Management

A key feature is its focus on low-power operation, with five software-selectable power-saving modes to maximise energy efficiency in portable applications. It also supports the Atmel QTouch library for easily implementing capacitive touch sensing interfaces. This combination of performance, connectivity, and power management makes it an ideal choice for demanding designs in consumer electronics, industrial control, and Internet of Things (IoT) devices.