ATMEGA645A-MUR Atmel, ATMEGA645A-MUR Datasheet - Page 513

• Manufacturer Part Number: ATMEGA645A-MUR
• Description: IC MCU AVR 64K FLASH 64QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA645A-MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

29.6.11
8285B–AVR–03/11
Internal Oscillator Speed
ATmega165A/165PA/325A/325PA/3250A/3250PA/6
Figure 29-349.ATmega3250PA: Watchdog Oscillator Frequency vs. V
Figure 29-350.ATmega3250PA: Watchdog Oscillator Frequency vs. Temperature
1225
1200
1175
1150
1125
1100
1075
1050
1025
1000
1250
1200
1150
1100
1050
1000
1.5
-40
-30
2
-20
-10
2.5
0
3
10
Temperature [°C]
V
20
CC
3.5
[V]
30
4
40
50
4.5
60
CC
70
5
80
5.5
-40°C
5.5 V
5.0 V
4.5 V
4.0 V
3.0 V
2.7 V
1.8 V
25°C
85°C
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