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ATMEGA8A-AUR
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Product Detailed Parameters
- Description：IC MCU 8BIT 8KB FLASH 32TQFP
- Series：AVR® ATmega
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Core Processor：AVR
- Core Size：8-Bit
- Speed：16MHz
- Connectivity：I2C, SPI, UART/USART
- Peripherals：Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O：23
- Program Memory Size：8KB (4K x 16)
- Program Memory Type：FLASH
- EEPROM Size：512 x 8
- RAM Size：1K x 8
- Voltage - Supply (Vcc/Vdd)：2.7V ~ 5.5V
- Data Converters：A/D 8x10b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：32-TQFP (7x7)
- Package / Case：32-TQFP
- Grade：-
- Qualification：-
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Overview
The ATMEGA8A-AUR is a Microchip Technology AVR microcontroller featuring an 8-bit RISC core operating at up to 16MHz. It includes 8KB of self-programmable Flash, 512 bytes of EEPROM, and 1KB of SRAM. The device supports 23 programmable I/O lines and operates within a voltage range of 2.7V to 5.5V across temperatures from -40°C to 85°C. It integrates two 8-bit timers, one 16-bit timer, three PWM channels, an 8-channel 10-bit ADC (TQFP/VQFN), USART, SPI, and TWI interfaces.
Feature Summary
- Supports capacitive touch sensing via the Microchip QTouch library for buttons, sliders, and wheels.
- Enables true read-while-write operations during in-system programming of Flash memory.
- Provides five software-selectable power-saving modes including Idle, Power-down, and Standby.
Applications
- Embedded systems requiring low-power operation with high processing efficiency.
- Applications utilizing capacitive touch user interfaces such as control panels.
- Data acquisition systems using the integrated analog-to-digital converter.
Procurement Notes
Verify that the ordering suffix 'R' corresponds to the Tape and Reel packaging format required for automated surface-mount assembly processes. Confirm the specific temperature grade and package dimensions match the design constraints before finalizing procurement orders.
Selection Notes
Select this component when a compact 32-pin TQFP solution is required for space-constrained designs. Ensure the application utilizes the 8-channel ADC capability available in the TQFP package rather than the 6-channel variant found in other packages.
Part Context
This part belongs to the ATmega8A family within the megaAVR series. It shares architectural similarities with the ATMEGA8A-AU but differs in its bulk packaging configuration. It serves as a cost-effective alternative to higher-density devices for basic control tasks.
Replacement Considerations
ATMEGA8A-AU
FAQ
Does the ATMEGA8A-AUR support capacitive touch sensing?
Yes, the device supports the Microchip QTouch library for acquiring data from capacitive touch buttons, sliders, and wheels.
What is the ADC channel count for the TQFP package?
The TQFP package provides eight channels for the 10-bit Analog-to-Digital Converter.
