ATmega8A-AU Datasheet Summary

General Information

• Manufacturer: Microchip Technology Inc.
• Part Number: ATmega8A-AU
• Package Type: 32-lead TQFP (Thin Quad Flat Package)
• Operating Voltage: 2.7V to 5.5V
• Operating Frequency: 0 to 16MHz
• Temperature Range: -40°C to 85°C

Features

• Microcontroller Type: Low-power CMOS 8-bit microcontroller
• Architecture: Based on AVR RISC architecture
• Instruction Execution: Executes powerful instructions in a single clock cycle, achieving up to 1 MIPS per MHz
• Performance: Achieves throughputs approaching 1 MIPS per MHz, allowing optimization of power consumption versus processing speed

Memory Specifications

• Program Memory: 8KB of In-System Self-programmable Flash memory with Read-While-Write capabilities
• EEPROM: 512 bytes of EEPROM with 100,000 write/erase cycles
• SRAM: 1KB of internal SRAM
• Boot Section: Optional Boot Code Section with independent lock bits

Peripheral Features

• Timers/Counters:Two 8-bit Timer/Counters with separate prescaler and compare modeOne 16-bit Timer/Counter with separate prescaler, compare mode, and capture modeReal Time Counter with separate oscillatorThree PWM channels
• Analog-to-Digital Converter (ADC):8-channel ADC in TQFP and VQFN packages with 10-bit accuracy6-channel ADC in PDIP package with 10-bit accuracy
• Serial Interfaces:Byte-oriented Two-wire Serial InterfaceProgrammable Serial USARTMaster/Slave SPI Serial Interface
• Other Features:Programmable Watchdog Timer with separate on-chip oscillatorOn-chip Analog ComparatorMicrochip QTouch® library support for capacitive touch buttons, sliders, and wheels

Power Management

• Power Consumption:Active: 3.6mA at 4MHz, 3V, 25°CIdle Mode: 1.0mAPower-down Mode: 0.5µA
• Sleep Modes:IdleADC Noise ReductionPower-savePower-downStandby

I/O and Packages

• I/O Lines: 23 programmable I/O lines
• Packages Available:28-lead PDIP (Plastic Dual In-line Package)32-lead TQFP (Thin Quad Flat Package)32-pad VQFN (Very Thin Quad Flat No-lead Package)

Development and Programming

• In-System Programming: On-chip boot program supports in-system programming
• True Read-While-Write Operation: Allows programming while the application is running
• Programming Lock: Provides software security for application code

Applications

• General Purpose Microcontroller: Suitable for a wide range of embedded control applications
• Low Power Applications: Ideal for battery-operated devices and systems requiring low power consumption
• Consumer Electronics: Suitable for appliances, toys, and other consumer products
• Industrial Control: Applicable in various industrial automation and control systems

Ordering Information

• Ordering Code: ATmega8A-AU-ND
• Lead-Free: RoHS compliant, lead-free package
• Datasheet Revision: DS40001974B (Rev. B – 03/2020)

Support and Resources

• Development Tools: Supported by a suite of development tools including C compilers, macro assemblers, program simulators, and evaluation kits
• Documentation: Comprehensive datasheet and application notes available for download from Microchip's official website