CrossRoads:
Used to be on the last page of the Atmel Atmega328P datasheet.The re-released datasheet under Microchip no longer carries it.
http://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061A.pdf
Yes, see it. Thanks.
https://www.sparkfun.com/datasheets/Components/SMD/ATMega328.pdf