AT90USB647 Atmel Corporation, AT90USB647 Datasheet - Page 159

• Manufacturer Part Number: AT90USB647
• Manufacturer: Atmel Corporation

Specifications of AT90USB647

• 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: 48
• Ext Interrupts: 16
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device + OTG
• 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: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 10
• Input Capture Channels: 1
• Pwm Channels: 9
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

7593K–AVR–11/09
Figure 15-9
Figure 15-9. Timer/Counter Timing Diagram, with Prescaler (f
Figure 15-10
Figure 15-10. Timer/Counter Timing Diagram, Setting of OCF2A, with Prescaler (f
Figure 15-11
TCNTn
(clk
TOVn
TCNTn
clk
(clk
clk
OCRnx
OCFnx
clk
clk
I/O
I/O
Tn
I/O
/8)
I/O
Tn
/8)
shows the same timing data, but with the prescaler enabled.
shows the setting of OCF2A in all modes except CTC mode.
shows the setting of OCF2A and the clearing of TCNT2 in CTC mode.
MAX - 1
OCRnx - 1
OCRnx
MAX
OCRnx Value
OCRnx + 1
BOTTOM
clk_I/O
AT90USB64/128
/8)
BOTTOM + 1
OCRnx + 2
clk_I/O
/8)
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