Atmel AVR1019
5
8415A-AVR-07/11
4 I/O ports
The I/O port pins are LVTTL and LVCMOS compatible for Atmel
ATxmega128A1U/64A1U devices. The minimum “Input High Voltage” is never higher
than 2.0V for VCC > 2.7V.
In Atmel ATxmega128A1/64A1, the minimum “Input High Voltage” is 0.7VCC, and
could be higher than 2.0V for VCC>2.86V.