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ATmega644PA Datasheet(PDF) 409 Page - ATMEL Corporation

Part # ATmega644PA
Description  8-bit Microcontroller with 16/32/64/128K Bytes In-Sytem Programmable Flash
PDF  468 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega644PA Datasheet(HTML) 409 Page - ATMEL Corporation

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409
8152G–AVR–11/09
ATmega164PA/324PA/644PA/1284P
Figure 28-127.ATmega644PA: BOD Threshold vs. Temperature (V
BOT = 1.8V)
28.3.11
Internal Oscillator Speed
Figure 28-128.ATmega644PA: Watchdog Oscillator Frequency vs. Temperature
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
8090
100
Temperature
(°C)
5.5 V
4.0 V
3.3 V
2.7 V
2.1 V
108
109
110
111
112
113
114
115
116
117
118
119
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Temperature
(°C)



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