ATmega1280 and similar Atmel microcontrollers can use TQFP100 adapter PCB and chart drawing exactly the’m not, but ATmega1280 datasheet write on, according to the atmega640, atmega1281, ATMEGA2560, atmega2561 microcontroller, the same circuit can be used on either a few... Electronics Projects, TQFP100 Adapter PCB (Eagle ATmega1280) "avr development board, " Date 2019/08/03