Description: The ATMEGA48A-AU is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. Features: High-performance, low-power AVR 8-bit microcontroller Advanced RISC architecture Up to 8K bytes of In-System Programmable Flash Up to 512 bytes of EEPROM Up to 512 bytes of SRAM 32 general purpose I/O lines 32 general purpose working registers On-chip 2-cycle multiplier Operating voltage range of 2.7-5.5V Operating frequency up to 20MHz On-chip oscillator On-chip debug system Six power-saving sleep modes In-System Programming by On-chip Boot Program Peripheral features: Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode Real Time Counter with Separate Oscillator Six PWM Channels Programmable Serial USART Master/Slave SPI Serial Interface Programmable Watchdog Timer with Separate On-chip Oscillator On-chip Analog Comparator Applications: The AT