ATmega645 Atmel Corporation, ATmega645 Datasheet - Page 317

• Manufacturer Part Number: ATmega645
• Manufacturer: Atmel Corporation

Specifications of ATmega645

• Flash (kbytes): 64 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 17
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• 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: No
• 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: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

29.8
2570N–AVR–05/11
Pin Driver Strength
Figure 29-21. I/O Pin Source Current vs. Output Voltage, Ports A, C, D, E, F, G, H, J (V
Figure 29-22. I/O Pin Source Current vs. Output Voltage, Ports A, C, D, E, F, G, H, J
70
60
50
40
30
20
10
0
25
20
15
10
5
0
0
0
(V
CC
1
= 2.7V)
0.5
-40 °C
25 °C
85 °C
2
1
-40 °C
25 °C
85 °C
V
V
OH
3
OH
1.5
(V)
(V)
ATmega325/3250/645/6450
4
2
5
2.5
6
3
CC
= 5V)
317