AVR ATtiny Family ATtiny20 Series Microcontrollers 8-bit Microcontrollers:

The high-performance, low-power Microchip 8-bit AVR RISC-based microcontroller combines 2KB ISP flash memory, 128B SRAM, twelve general purpose I/O lines, 16 general purpose working registers, an 8-bit timer/counter with two PWM channels, a 16-bit timer/counter with two PWM channels, internal and external interrupts, an 8-channel 10-bit A/D converter.

• AVR core, Up to 12 MIPS throughput at 12MHz
• FLASH: Upto 2KB, SRAM: Upto 128B
• Interfaces: SPI, TWI
• 10-Bit ADC
• Upto 12 programmable I/O lines
• 1x 8-Bit timer/counter, 1x 16-Bit timer/counter.
• Programmable watchdog timer with separate on-chip oscillator
• On-chip analog comparator
• 4x PWM channels
• Applications: Power Regulators,Rectification, and DAC applications