Datasheet

321
7810C–AVR–10/12
Atmel ATmega328P [Preliminary]
29.1.5 Pin Threshold and Hysteresis
Figure 29-11. I/O Pin Input Threshold Voltage vs. V
CC
(V
IH
, I/O Pin read as ‘1’).
Figure 29-12. I/O Pin Input Threshold Voltage vs. V
CC
(V
IL
, I/O Pin read as ‘0’)..
I/O PIN INPUT THRESHOLD VOLTAGE vs. V
CC
V IH, IO PIN READ A S '1'
0
0.5
1
1.5
2
2.5
3
3.5
22.533.544.555.5
V
CC
(V)
Threshold (V)
125
85
25
-45
I/O PIN INPUT THRESHOLD VOLTAGE vs. V
CC
VIL, IO PIN READ AS '0'
0
0.5
1
1.5
2
2.5
22.533.544.555.5
V
CC
(V)
Threshold (V)
125
85
25
-45