The Atmel®  ATmega48/V/ 88/V /168/V 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 ATmega48/V/ 88/V /168/V achieves throughputs close to 1MIPS per MHz. This empowers system designer to optimize the device for power consumption versus processing speed.

Features:

• High Performance, Low Power Atmel®AVR® 8-Bit Microcontroller Family
• Advanced RISC Architecture
  • 131 Powerful Instructions
  • Most Single Clock Cycle Execution
  • 32 x 8 General Purpose Working Registers
  • Fully Static Operation
  • Up to 20 MIPS Throughput at 20MHz
  • On-chip 2-cycle Multiplier
• High Endurance Non-volatile Memory Segments
  • 4K/8K/16KBytes of In-System Self-Programmable Flash program Memory
  • 256/512/512Bytes EEPROM
  • 512/1K/1KBytes Internal SRAM
  • Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
  • Data Retention: 20 years at 85°C/100 years at 25°C(1)
  • Optional Boot Code Section with Independent Lock Bits
    • In-System Programming by On-chip Boot Program
    • True Read-While-Write Operation
  • Programming Lock for Software Security
• Atmel® QTouch® Library Support
  • Capacitive Touch Buttons, Sliders and Wheels
  • QTouch and QMatrix® Acquisition
  • Up to 64 sense channels
• 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
  • 8-channel 10-bit ADC in TQFP and QFN/MLF package
    • Temperature Measurement
  • 6-channel 10-bit ADC in PDIP Package
    • Temperature Measurement
  • Two Master/Slave SPI Serial Interface
  • One Programmable Serial USART
  • One Byte-oriented 2-wire Serial Interface (Philips I2C compatible)
  • Programmable Watchdog Timer with Separate On-chip Oscillator
  • One On-chip Analog Comparator
  • Interrupt and Wake-up on Pin Change
• Special Microcontroller Features
  • Power-on Reset and Programmable Brown-out Detection
  • Internal Calibrated Oscillator
  • External and Internal Interrupt Sources
  • Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
• I/O and Packages
  • 23 Programmable I/O Lines
  • 28-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad QFN/MLF
• Operating Voltage:
  • 1.8 - 5.5V for ATmega48V/88V/168V
• Temperature Range:
  • -40°C to 85°C
• Speed Grade:
  • ATmega48V/88V/168V: 0 - 4MHz @ 1.8V - 5.5V, 0 - 10MHz @ 2.7V - 5.5V
• Power Consumption at 1MHz, 1.8V, 25°C
  • Active Mode: 0.3mA
  • Power-down Mode: 0.1μA
  • Power-save Mode: 0.8μA (Including 32kHz RTC)