ATMEGA644P-20AQ Atmel, ATMEGA644P-20AQ Datasheet - Page 411

• Manufacturer Part Number: ATMEGA644P-20AQ
• Description: MCU AVR 64K FLASH 20MHZ 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644P-20AQ

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

26.3.13
8011O–AVR–07/10
Current Consumption in Reset and Reset Pulsewidth
Figure 26-139.Reset Supply Current vs. Low Frequency
Figure 26-140.Reset Supply Current vs. Frequency
0.16
0.14
0.12
0.08
0.06
0.04
0.02
0.1
2.5
1.5
0.5
0
3
2
1
0
0
0
0.1
2
0.2
4
1.8V
0.3
6
0.4
8
Frequency (MHz)
Frequency (MHz)
0.5
10
2.7V
ATmega164P/324P/644P
0.6
12
3.3V
0.7
14
0.8
16
4.0V
0.9
18
20
1
5.5V
5.0V
4.5V
4.0V
3.3V
2.7V
1.8V
5.5V
5.0V
4.5V
411