Information about mature devices.
The following mature devices are not recommended for new designs:
- ATtiny11
- ATtiny12
- ATtiny15
- ATtiny22
- AT90S1200
- AT90S2313
- AT90S2323
- AT90S2343
- AT90S4433
- AT90S8515
- AT90S8535
- ATmega323
- ATmega161
- ATmega163
- ATmega103
- ATmega165
- ATmega169
- ATmega64HVE
- ATmega32U6
- AT90PWM2
- AT90PWM3
- AT90SCR100
- AT86RF401
See https://www.microchip.com/ for replacements.