8 Bit MCU, AVR ATmega Family ATmega128 Series Microcontrollers, 16 MHz, 128 KB,64 Pins, TQFPProduct OverviewThe ATMEGA128A-AU is a high-performance, low-power 8-bit AVR RISC-basedMicrocontroller 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 flexible timer/counters with compare modes and PWM, twoUSARTs , a byte oriented Two-wire serial interface, an 8-channel/10-bit A/Dconverter with optional differential input stage with programmable gain,programmable watchdog timer with internal oscillator, SPI serial port, a JTAG(IEEE 1149.1 compliant) test interface for accessing the on-chip debugging andprogramming and six software selectable power saving modes. The device operatesbetween 2.7 to 5.5V. By executing powerful instructions in a single clock cycle,the device achieves throughputs approaching 1 MIPS per MHz, balancing powerconsumption and processing speed.High-performance, Low-power AVR® 8-Bit MicrocontrollerAdvanced RISC ArchitectureHigh Endurance Non-volatile Memory SegmentsJTAG (IEEE Standard 1149.1 Compliant) InterfacePower-on Reset and Programmable Brown-out DetectionInternal Calibrated RC OscillatorExternal and Internal Interrupt SourcesIdle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended StandbySleep ModesSoftware Selectable Clock FrequencyATmega103 Compatibility Mode Selected by a FuseGlobal Pull-up Disable0 to 16MHz Speed GradeApplicationsIndustrial, Automation & Process Control, Sensing & Instrumentation, MeteringProduct InformationProduct Range: AVR ATmega Family ATmega128 Series MicrocontrollersCPU Speed: 16MHzProgram Memory Size: 128KBOperating Frequency Max: 16MHzNo. of Pins: 64PinsMCU Case Style: TQFPIC Case / Package: TQFPNo. of I/O's: 53I/O'sEmbedded Interface Type: I2C, SPI, UARTInterfaces: I2C, SPI, UARTSupply Voltage Min: 2.7VSupply Voltage Max: 5.5VMCU Family: AVR ATmegaMCU Series: ATmega128Operating Temperature Min: -40°COperating Temperature Max: 85°CIC Mounting: Surface MountQualification: -MSL: MSL 3 - 168 hours