Description: The ATMEGA128A-AU is a high-performance, low-power 8-bit AVR RISC-based Microcontroller combines 128kb flash memory with read-while-write capabilities, 4kb EEPROM, 53 general purpose I/O lines, 32 general purpose working registers, real time counter, four ... High-performance, Low-power AVR 8-Bit Microcontroller Advanced RISC Architecture High Endurance Non-volatile Memory Segments JTAG (IEEE Standard 1149.1 Compliant) Interface Power-on Reset and Programmable Brown-out Detection Internal Calibrated RC Oscillator External and Internal Interrupt Sources Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby Sleep Modes Software Selectable Clock Frequency ATmega103 Compatibility Mode Selected by a Fuse Global Pull-up Disable 0 to 16MHz Speed Grade