Datasheet

460
8272A–AVR–01/10
164A/164PA/324A/324PA/644A/644PA/1284/1284P
28.5.9 Pin Threshold and Hysteresis
Figure 28-221.ATmega644A: I/O Pin Input Threshold vs. V
CC
(V
IH
, I/O Pin Read as ‘1’)
Figure 28-222.ATmega644A: I/O Pin Input Threshold vs. V
CC
(V
IL
, I/O Pin Read as ‘0’).
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
0.5
1
1.5
2
2.5
1.5 2 2.5 33.5 4 4.5 5 5.5
V
CC
(V)
Threshold (V)