361
8025I–AVR–02/09
ATmega48P/88P/168P/328P
27.2.7
Pin Pull-Up
Figure 27-61. I/O Pin Pull-up Resistor Current vs. Input Voltage (V
CC
= 1.8 V).
Figure 27-62. I/O Pin Pull-up Resistor Current vs. Input Voltage (V
CC
= 2.7 V).
I/O PI
N
PULL-UP RESISTOR CURRE
N
T
v
s. I
N
PUT
V
OLTAGE
0
10
20
30
40
50
60
0
0.2
0.4
0.6
0.
8
1
1.2
1.4
1.6
1.
8
2
V
OP
(
V
)
I
OP
(
u
A)
8
5 °C
25 °C
-40 °C
V
CC
= 1.
8
V
I/O PI
N
PULL-UP RESISTOR CURRE
N
T
v
s. I
N
PUT
V
OLTAGE
0
10
20
30
40
50
60
70
8
0
0
0.5
1
1.5
2
2.5
3
V
OP
(
V
)
I
OP
(
u
A)
8
5 °C
25 °C
-40 °C
V
CC
= 2.7
V