Description
The ATmega163 is a low-power CMOS 8-bit microcontroller based on the AVR architecture. By executing powerful instructions in a single clock cycle, the ATmega163 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.
The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.

Features
• High-performance, Low-power AVR® 8-bit Microcontroller
   – 130 Powerful Instructions – Most Single Clock Cycle Execution
   – 32 x 8 General Purpose Working Registers
   – Fully Static Operation
   – Up to 8 MIPS Throughput at 8 MHz
   – On-chip 2-cycle Multiplier
• Nonvolatile Program and Data Memories
• Self-programming In-System Programmable Flash Memory
   – 16K Bytes with Optional Boot Block (256 - 2K Bytes)
      Endurance: 1,000 Write/Erase Cycles
   – Boot Section Allows Reprogramming of Program Code without External Programmer
   – Optional Boot Code Section with Independent Lock Bits
   – 512 Bytes EEPROM
      Endurance: 100,000 Write/Erase Cycles
   – 1024 Bytes Internal SRAM
   – Programming Lock for Software Security
• 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 Clock with Separate Oscillator and Counter Mode
   – Three PWM Channels
   – 8-channel, 10-bit ADC
   – Byte-oriented Two-wire Serial Interface
   – Programmable Serial UART
   – Master/Slave SPI Serial Interface
   – Programmable Watchdog Timer with Separate On-chip Oscillator
   – Analog Comparator
• Special Microcontroller Features
   – Power-on Reset and Programmable Brown-out Detection
   – Internal Calibrated RC Oscillator
   – External and Internal Interrupt Sources
   – Four Sleep Modes: Idle, ADC Noise Reduction, Power-save, and Power-down
• Power Consumption at 4 MHz, 3.0V, 25°C
   – Active 5.0 mA
   – Idle Mode 1.9 mA
   – Power-down Mode < 1 µA
• I/O and Packages
   – 32 Programmable I/O Lines
   – 40-pin PDIP and 44-pin TQFP
• Operating Voltages
   – 2.7 - 5.5V for ATmega163L
   – 4.0 - 5.5V for ATmega163
• Speed Grades
   – 0 - 4 MHz for ATmega163L
   – 0 - 8 MHz for ATmega163