-
ATmega8A-AU - Microchip 8-bit AVR MCU | 8KB Flash, 23 I/O, 16MHz, 32-TQFP
The ATmega8A-AU from Microchip Technology (formerly Atmel) is a high-performance, low-power 8-bit AVR RISC-based microcontroller that delivers an exceptional balance of processing capability, power efficiency, and cost-effectiveness. With 8KB of self-programmable Flash memory and comprehensive peripheral integration, this MCU is engineered for a wide range of embedded control applications. Housed in a compact 32-pin TQFP package, it provides an ideal solution for space-constrained designs requiring robust performance and versatile connectivity.
-
Description :
The ATmega8A-AU represents a popular member of Microchip's megaAVR family, built on an advanced RISC architecture that achieves throughputs approaching 1 MIPS per MHz. This microcontroller features 8KB of in-system programmable Flash memory with read-while-write capabilities, 1KB of SRAM, and 512 bytes of EEPROM for non-volatile data storage. Operating across a wide voltage range of 2.7V to 5.5V with an extended temperature range of -40°C to +85°C, the device is suitable for both battery-powered and industrial applications. The integrated peripheral set includes a 6-channel 10-bit ADC, hardware SPI, I²C (TWI), and USART interfaces, along with three flexible timer/counters with compare modes. The inclusion of QTouch library support enables capacitive touch sensing capabilities without additional components.
Features :
-
High-Performance AVR RISC Core: 8-bit architecture delivering up to 16 MIPS at 16MHz
-
Advanced Memory Configuration: 8KB Flash, 1KB SRAM, and 512B EEPROM
-
Comprehensive Analog Capabilities: 6-channel 10-bit ADC for precision measurement
-
Versatile Communication Interfaces: USART, SPI, and Two-Wire Interface (TWI/I²C)
-
Extended I/O Capability: 23 programmable I/O lines with multiple functions
-
Advanced Power Management: Five sleep modes for optimal power efficiency
-
Robust System Features: Power-on reset, programmable brown-out detection, and watchdog timer
-
Touch Sensing Support: QTouch® library for capacitive touch interfaces
Applications :
The ATmega8A-AU is ideal for a wide range of embedded applications:
-
Industrial Control Systems and automation
-
Consumer Electronics and home appliances
-
Automotive Accessory Systems
-
Internet of Things (IoT) devices and sensors
-
Motor Control and power management
-
Human-Machine Interfaces with touch sensing
-
Battery-Powered Devices and portable instruments
-
Educational and prototyping platforms
Technical Specifications :
Parameter Specification Manufacturer Microchip Technology (Atmel) Part Number ATmega8A-AU Core 8-bit AVR RISC Maximum Frequency 16 MHz Performance 16 MIPS Program Memory 8 KB Flash SRAM Size 1 KB EEPROM Size 512 bytes Number of I/O 23 Communication USART, SPI, TWI (I²C) Analog Features 6-channel 10-bit ADC Timers/Counters 3 Operating Voltage 2.7V - 5.5V Operating Temperature -40°C to +85°C Package 32-TQFP (7x7mm) Special Features QTouch support, Brown-out detection
Additional Information :
-
Architecture: Advanced RISC with 32 x 8 general purpose registers
-
Instruction Set: 131 powerful instructions, most single clock cycle execution
-
Peripheral Highlights:
-
Two 8-bit Timer/Counters with separate prescalers
-
One 16-bit Timer/Counter with separate prescaler and compare/capture modes
-
Programmable Serial USART
-
Master/Slave SPI Serial Interface
-
-
Special Microcontroller Features:
-
Power-on Reset and Programmable Brown-out Detection
-
Internal Calibrated RC Oscillator
-
External and Internal Interrupt Sources
-
-
