Datasheet

331
2545T–AVR–05/11
ATmega48/88/168
Figure 30-29. I/O pin input threshold voltage vs. V
CC
(VIL, I/O pin read as '0').
Figure 30-30. I/O pin input hystreresis vs. Vcc.
85°C
25°C
-40°C
0
0.5
1
1.5
2
2.5
3
1.5 2 2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
Threshold (V)
85°C
25°C
-40°C
0
0.1
0.2
0.3
0.4
0.5
0.6
1.5 2 2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
Input hysteresis (V)