ATmega128
The Atmel® AVR® ATmega128 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega128 achieves throughputs approaching 1MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. Peripheral Features Programmable I/O Lines 53 Programmable I/O Lines Timers Two 8-bit Timer/Counters and Two Expanded 16-bit Timer/Counters with Separate Prescalers and Compare Modes ADC 8-channel, 10-bit ADC Serial Interface 2 Programmable Serial USARTs Master / Slave Interface SPI Serial Interface PWM Two 8-bit PWM Channels and 6 PWM Channels with Programmable Resolution from 2 to 16 Bits Watch Dog Timer Programmable Watch Dog Timer With on chip Oscillator Power Supply Type DC Operating Voltage 2.7V - 5.5V Special Features Internal Oscillator Internal Calibrated Oscillator External Oscillator Up to 16 MHz Interrupt Source External and Internal Clock Frequency Setting Adjustable through Software