
467
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
Figure 29-229.Atmel ATmega644A: BOD threshold vs. temperature (V
BOT = 1.8V).
Figure 29-230.Atmel ATmega644A: Calibrated bandgap voltage vs. V
CC.
Rising Vcc
Falling Vcc
1.76
1.77
1.78
1.79
1.80
1.81
1.82
1.83
1.84
-50
-40
-30
-20
-10
0
10
20
3040
5060
70
8090
100
Temperature
[°C]
Thre
s
hold
[V]
85°C
25°C
-40°C
1.066
1.068
1.070
1.072
1.074
1.076
1.078
1.080
1.082
1.084
1.086
VCC [V]
B
a
ndg
a
p
volt
a
ge
[V]
1.5
4.0
3.5
3.0
2.5
2.0
5.5
5.0
4.5