ATmega644P Atmel Corporation, ATmega644P Datasheet - Page 371

• Manufacturer Part Number: ATmega644P
• Manufacturer: Atmel Corporation

Specifications of ATmega644P

• Flash (kbytes): 64 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

26.2.7
8011O–AVR–07/10
Pin Pull-up
Figure 26-62. I/O Pin Pull-up Resistor Current vs. Input Voltage (V
Figure 26-63. I/O Pin Pull-up Resistor Current vs. Input Voltage (V
60
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)
ATmega164P/324P/644P
1.2
2
1.4
1.6
CC
CC
2.5
= 1.8V).
= 2.7V).
1.8
2
3
-40°C
25°C
85°C
-40°C
25°C
85°C
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