
513
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
30.7.9
Pin Threshold and Hysteresis
Figure 30-399.ATmega645A: I/O Pin Input Threshold Voltage vs. V
CC (VIH, I/O Pin Read as “1”)
Figure 30-400.ATmega645A: I/O Pin Input Threshold Voltage vs. V
CC (VIL, I/O Pin Read as “0”
85 °C
25 °C
-45 °C
0.9
1.1
1.3
1.5
1.7
1.9
2.1
2.3
2.5
2.7
2.9
3.1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
VCC (V)
Thres
hold
(
V
)
85 °C
25 °C
-45 °C
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
2.2
2.4
1.5
2
2.5
3
3.5
4
4.5
5
5.5
VCC (V)
Thres
h
old
(
V
)