ATtiny84 Test Circuit Diagram

This schematic shows the Atmel AVR ATtiny84 circuit as it was built on the test board. The setup would be the same for the ATtiny24 or ATtiny44. The ATtiny84 is using its internal 8 MHz RC oscillator.

Atmel ATtiny84 Datasheet

Here you can find the current ATtiny84 datasheet

Atmel ATtiny84 Pinout

ATtiny84 Pinout

Schematic Diagram

Parts

• U1 Atmel ATtiny84 MCU
• C1,C2 22pF ceramic capacitor
• R1 10k 5% 1/4W resistor
• S1 Momentary pushbutton switch
• X1 Crystal
• J1 2x5 ISP connector
• Not shown
  • Perfboard
  • 14-pin socket
  • Power supply