Datasheet

464
8272A–AVR–01/10
164A/164PA/324A/324PA/644A/644PA/1284/1284P
Figure 28-229.ATmega644A: BOD Threshold vs. Temperature (V
BOT
= 1.8V)
Figure 28-230.ATmega644A: Calibrated Bandgap Voltage vs. V
CC
Rising Vcc
Falling Vcc
1.76
1.77
1.78
1.79
1.8
1.81
1.82
1.83
1.84
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 8090100
Temperature
(°C)
Threshold (V)
85 °C
25 °C
-40 °C
1.066
1.068
1.07
1.072
1.074
1.076
1.078
1.08
1.082
1.084
1.086
1.5 2 2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
Bandgap Voltage (V)