Atmel ATmega8A-AU 8-Bit AVR Microcontroller, 8KB Flash, 32-TQFP, Surface Mount

The Atmel ATmega8A-AU 8-Bit AVR Microcontroller offers 8kB of in-system programmable flash memory in a 32-pin TQFP surface mount package.

Overview

The ATmega8A-AU is a high-performance, low-power 8-bit AVR RISC-based microcontroller designed for demanding embedded applications. It combines 8kB of in-system programmable flash memory with read-while-write capability, 512B EEPROM, and 1kB SRAM. With 23 general-purpose I/O lines and 32 general-purpose working registers, it includes three flexible timer/counters with compare modes, along with both internal and external interrupts.

Key Features

• 8kB in-system programmable flash with read-while-write capability
• 512B EEPROM and 1kB SRAM
• 23 general-purpose I/O lines
• Three flexible timer/counters with compare modes
• 6-channel 10-bit A/D converter
• Throughput of up to 1 MIPS per MHz
• Operating voltage from 2.7V to 5.5V
• Operating temperature range from -40°C to +85°C
• Surface mount 32-pin TQFP package

Communication and Power Management

The device includes a byte-oriented Two-Wire serial interface, a serial programmable USART, and an SPI serial port. Its programmable watchdog timer uses an internal oscillator, and five software-selectable power-saving modes are available: Idle, ADC noise reduction, power-save, power-down, and standby. The on-chip 2-cycle multiplier supports efficient computation.

Performance

The advanced RISC architecture executes powerful instructions in a single clock cycle, achieving throughputs approaching 1 MIPS per MHz. This balances power consumption and processing speed. The device also supports QTouch Library capacitive touch buttons, sliders, and wheels, as well as external and internal interrupt sources.

Physical Details

The ATmega8A-AU weighs 2.188 g and measures 3.3 (width) x 1.5 (depth) x 4.3 (height). Suitable for demanding embedded designs that require flash, EEPROM, SRAM, and multiple serial interfaces.