ATtiny3217/ATtiny1617 8-bit tinyAVR 1-Series Microcontroller Datasheet
Datasheet for Microchip Technology's ATtiny3217 and ATtiny1617 microcontrollers, featuring an 8-bit AVR processor, up to 20 MHz operation, 16/32 KB Flash, low-power architecture, Event System, and QTouch support.