ATmega256/128/64RFR2 Summary - Atmel Corporation - Microcontrollers, 32-bit, and touch soluti
2 8393CS-MCU Wireless-09/14 ATmega256/128/64RFR2 1 Pin Configurations Figure 1-1. Pinout ATmega256/128/64RFR2 Note: The large center pad underneath the QFN/MLF package is made of metal and internally connected to AVSS. It should be soldered or ......