ATMEGA644PA-PU Atmel, ATMEGA644PA-PU Datasheet - Page 429

• Manufacturer Part Number: ATMEGA644PA-PU
• Description: IC MCU 8BIT 64KB FLASH 40DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644PA-PU

• 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): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Processor Series: ATMEGA64x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: SPI, TWI, UART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 32
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

28.4.7
8272A–AVR–01/10
Pin Pull-up
Figure 28-162.ATmega324PA: I/O Pin Pull-up Resistor Current vs. Input Voltage (V
Figure 28-163.ATmega324PA: I/O Pin Pull-up Resistor Current vs. Input Voltage (V
164A/164PA/324A/324PA/644A/644PA/1284/1284P
50
40
30
20
10
80
70
60
50
40
30
20
10
0
0
0
0
0.2
0.5
0.4
0.6
1
0.8
V
V
OP
OP
1.5
1
(V)
(V)
1.2
2
1.4
1.6
2.5
1.8
3
2
-40 °C
-40 °C
25 °C
85 °C
25 °C
85 °C
CC
CC
= 1.8V).
= 2.7V).
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