The high-performance, low-power Microchip 8-bit AVR® RISC-based microcontroller combines 4 KB ISP Flash memory, 256B EEPROM, 256B SRAM, six general purpose I/O lines, 32 general purpose working registers, one 8-bit timer/counter with compare modes, one 8-bit high-speed timer/counter, USI, internal and external Interrupts, 4-channel 10-bit A/D converter, programmable watchdog timer with internal oscillator, three software selectable power saving modes, and debugWIRE for on-chip debugging. The device achieves a throughput of 20 MIPS at 20 MHz and operates between 2.7-5.5 volts.
By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching one MIPS per MHz, balancing power consumption and processing speed.
 
Parametrics 
Name
Value
Program Memory Type
Flash
Program Memory Size (KB)
4
CPU Speed (MIPS/DMIPS)
20
SRAM (B)
256
Data EEPROM/HEF (bytes)
256
Digital Communication Peripherals
1-SPI, 1-I2C
Capture/Compare/PWM Peripherals
5PWM
Timers
2 x 8-bit
Number of Comparators
1
Operating Voltage Range (V)
1.8 to 5.5
Pin Count
8