Overview

ATtiny20 is a low-power CMOS 8-bit microcontroller based on the compact AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny20 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Features

• High performance, low power 8-bit AVR® microcontroller

• Advanced RISC architecture

   • 112 powerful instructions – most single clock cycle execution

   • 16 x 8 general purpose working registers

   • Fully static operation

   • Up to 12 MIPS throughput at 12MHz

• Non-volatile program and data memories

   • 2K bytes of in-system programmable flash program memory

   • 128 bytes internal SRAM

   • Flash write/erase cycles: 10,000

   • Data retention: 20 years at 85oC / 100 years at 25oC

• Peripheral features

   • One 8-bit timer/counter with two PWM channels

   • One 16-bit timer/counter with two PWM channels

   • 10-bit analog to digital converter

      • 8 single-ended channels

   • Programmable watchdog timer with separate on-chip oscillator

   • On-chip analog comparator

   • Master/slave SPI serial interface

   • Slave TWI serial interface

• Special microcontroller features

   • In-system programmable

   • External and internal interrupt sources

   • Low power idle, ADC noise reduction, stand-by and power-down modes

   • Enhanced power-on reset circuit

   • Internal calibrated oscillator

• I/O and packages

   • 14-pin SOIC/TSSOP: 12 programmable I/O lines

   • 12-ball WLCSP: 10 programmable I/O lines

   • 15-ball UFBGA: 12 programmable I/O lines

   • 20-pad VQFN: 12 programmable I/O lines

• Operating voltage:

   • 1.8 – 5.5V

• Programming voltage:

   • 5V

• Speed grade

   • 0 – 4MHz @ 1.8 – 5.5V

   • 0 – 8MHz @ 2.7 – 5.5V

   • 0 – 12MHz @ 4.5 – 5.5V

• Industrial temperature range

• Low power consumption

   • Active mode:

     • 200 μA at 1MHz and 1.8V

   • Idle mode:

     • 25μA at 1MHz and 1.8V

   • Power-down mode:

     • < 0.1μA at 1.8V