Description:

• The ATMEGA128A-AU is a powerful, low-power 8-bit AVR microcontroller designed by Microchip Technology for embedded systems, automotive, and industrial applications.
• High Performance AVR Core:
• Executes complex instructions in a single clock cycle.
• Provides performance near to one MIPS per MHz.
• Efficiently balances power usage and computing needs.
• Memory:
• 128 kB of in-system programmable flash memory.
• 4 kB EEPROM for non-volatile data storage.
• 4 kB of inbuilt SRAM for temporary data.
• Peripheral features:
• 53 programmable general-purpose I/O lines.
• Dual programmable serial USARTs.
• SPI serial interface (master/slave).
• The Two-Wire Serial Interface (I²C or TWI) enables connection with external sensors and modules.
• 8-channel, 10-bit ADC for precise analog-to-digital conversions.
• PWM channels include two 8-bit and six with customizable resolution (2-16 bits).
• Oscillators and Timer:
• Two 8-bit timer/counters with separate prescalers and compare modes.
• Two 16-bit timer/counters with independent prescalers for comparing and capturing modes.
• Real-time counter with different oscillators for accurate timekeeping.
• Supports both internal calibrated RC oscillators and external clock sources.
• Power efficiency:
• It operates at voltages ranging from 2.7 to 5.5.
• Power-down consumption is less than 1 µA.
• Active mode Consumption is about 1 mA per MHz, making it ideal for battery-powered applications.
• Development and Debugging:
• Supports the JTAG interface for on-chip debugging and programming.
• External and internal interrupt sources allow for more efficient multitasking.
• Read-While-Write functionality enables code execution during flash memory upgrades.