ATMEGA644P-20MQ Atmel, ATMEGA644P-20MQ Datasheet - Page 398

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

Specifications of ATMEGA644P-20MQ

• 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-VQFN Exposed Pad
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8011O–AVR–07/10
Figure 26-113.Reset Pull-up Resistor Current vs. Reset Pin Voltage (V
Figure 26-114.Reset Pull-up Resistor Current vs. Reset Pin Voltage (V
140
120
100
70
60
50
40
30
20
10
80
60
40
20
0
0
0
0
0.5
1
1
2
V
V
RESET
RESET
CC
1.5
3
ATmega164P/324P/644P
(V)
5
(V)
2
4
2.5
5
CC
CC
= 2.7V).
= 5V).
3
6
-40°C
25°C
85°C
-40°C
25°C
85°C
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