ATmega640 Atmel Corporation, ATmega640 Datasheet - Page 82

• 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

13.3.3
2549N–AVR–05/11
Alternate Functions of Port C
The Port C alternate function is as follows:
Table 13-9.
Table 13-10
signals shown in
Table 13-10. Overriding Signals for Alternate Functions in PC7:PC4
DIEOE
Signal
DIEOV
DDOE
Name
PUOE
PUOV
DDOV
PVOE
PVOV
AIO
DI
Port Pin
and
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Port C Pins Alternate Functions
SRE • (XMM<1)
SRE • (XMM<1)
SRE • (XMM<1)
Table 13-11 on page 83
Figure 13-5 on page
PC7/A15
A15
0
1
0
0
–
–
ATmega640/1280/1281/2560/2561
SRE • (XMM<2)
SRE • (XMM<2)
SRE • (XMM<2)
76.
PC6/A14
relate the alternate functions of Port C to the overriding
A14
A15 (External Memory interface address bit 15)
A14 (External Memory interface address bit 14)
A13 (External Memory interface address bit 13)
A12 (External Memory interface address bit 12)
A11 (External Memory interface address bit 11)
A10 (External Memory interface address bit 10)
A9 (External Memory interface address bit 9)
A8 (External Memory interface address bit 8)
0
1
0
0
–
–
Alternate Function
SRE • (XMM<3)
SRE • (XMM<3)
SRE • (XMM<3)
PC5/A13
A13
0
1
0
0
–
–
SRE • (XMM<4)
SRE • (XMM<4)
SRE • (XMM<4)
PC4/A12
A12
0
1
0
0
–
–
82