ATtiny13A Microcontroller
20 MHz 8 Pin Attiny13A Microcontroller 8 bit AVR Microcontroller with 1Kbytes of Self-Programmable Flash.
ATtiny2313 Microcontroller
20 MHz 20 Pin ATtiny2313 SMD SOP 20 Package 8 Bit AVR Microcontroller with 2Kbytes of Self-Programmable Flash