
385
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
29.2.9
Pin threshold and hysteresis
Figure 29-74. Atmel ATmega164PA: I/O pin input threshold vs. V
CC (VIH , I/O pin read as ‘1’).
Figure 29-75. Atmel ATmega164PA: I/O pin input threshold vs. V
CC (VIL, I/O pin read as ‘0’).
85°C
25°C
-40°C
0
0.5
1.0
1.5
2.0
2.5
3.0
VCC [V]
Thre
s
hold
[V
]
1.5
4.0
3.5
3.0
2.5
2.0
5.5
5.0
4.5
85°C
25°C
-40°C
0
0.5
1.0
1.5
2.0
2.5
VCC [V]
Thre
s
hold
[V
]
1.5
4.0
3.5
3.0
2.5
2.0
5.5
5.0
4.5