AT90USB647-MU Atmel, AT90USB647-MU Datasheet - Page 159

• Manufacturer Part Number: AT90USB647-MU
• Description: MCU, 8BIT, 64K FLASH, USB, 64QFN
• Manufacturer: Atmel

Specifications of AT90USB647-MU

• Controller Family/series: AT90
• No. Of I/o's: 48
• Eeprom Memory Size: 2KB
• Ram Memory Size: 4KB
• Cpu Speed: 16MHz
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 64KB
• Oscillator Type: External, Internal
• Package: 64QFN EP
• Device Core: AVR
• Family Name: AT90
• Maximum Speed: 20 MHz
• Ram Size: 4 KB
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 48
• Interface Type: SPI/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 4
• Lead Free Status / Rohs Status: Details

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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