ATmega640 Atmel Corporation, ATmega640 Datasheet - Page 408

• Manufacturer Part Number: ATmega640
• Manufacturer: Atmel Corporation

Specifications of ATmega640

• Flash (kbytes): 64 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 86
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 5
• Twi (i2c): 1
• Uart: 4
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 8
• Eeprom (bytes): 4096
• 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: 6
• Output Compare Channels: 16
• Input Capture Channels: 4
• Pwm Channels: 15
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

2549N–AVR–05/11
Figure 32-43. Watchdog Timer Current vs. V
Figure 32-44. Analog Comparator Current vs. V
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
0
0
1.5
1.5
2
2
2.5
2.5
ATmega640/1280/1281/2560/2561
3
3
CC
V
V
CC
CC
3.5
3.5
CC
(V)
(V)
4
4
4.5
4.5
5
5
5.5
5.5
-40°C
-40°C
25°C
85°C
25°C
85°C
408