Features
• High-performance, Low-power AVR® 8-bit Microcontroller
• RISC Architecture
– 130 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 16 MIPS Throughput at 16 MHz
– On-chip 2-cycle Multiplier
• Nonvolatile Program and Data Memories
– 8K Bytes of In-System Self-programmable Flash Endurance: 10,000 Write/Erase Cycles
– Optional Boot Code Section with Independent Lock bits In-System Programming by On-chip Boot Program True Read-While-        Write Operation
– 512 Bytes EEPROM
  Endurance: 100,000 Write/Erase Cycles
– 512 Bytes Internal SRAM
– Up to 64K Bytes Optional External Memory Space
– Programming Lock for Software Security
• Peripheral Features
– One 8-bit Timer/Counter with Separate Prescaler and Compare Mode
– One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode
– Three PWM Channels
– Programmable Serial USART
– Master/Slave SPI Serial Interface
– Programmable Watchdog Timer with Separate On-chip Oscillator
– On-chip Analog Comparator
• Special Microcontroller Features
– Power-on Reset and Programmable Brown-out Detection
– Internal Calibrated RC Oscillator
– External and Internal Interrupt Sources
– Three Sleep Modes: Idle, Power-down and Standby
• I/O and Packages
– 35 Programmable I/O Lines
– 40-pin PDIP, 44-lead TQFP, 44-lead PLCC, and 44-pad QFN/MLF
• Operating Voltages
– 2.7 - 5.5V for ATmega8515L
– 4.5 - 5.5V for ATmega8515
• Speed Grades
– 0 - 8 MHz for ATmega8515L
– 0 - 16 MHz for ATmega8515