AT90USB647-MU Atmel, AT90USB647-MU Datasheet - Page 110

• 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

13.8
13.8.1
110
8-bit Timer/Counter Register Description
AT90USB64/128
Timer/Counter Control Register A – TCCR0A
Figure 13-9. Timer/Counter Timing Diagram, with Prescaler (f
Figure 13-10
mode and PWM mode, where OCR0A is TOP.
Figure 13-10. Timer/Counter Timing Diagram, Setting of OCF0x, with Prescaler (f
Figure 13-11
PWM mode where OCR0A is TOP.
Figure 13-11. Timer/Counter Timing Diagram, Clear Timer on Compare Match mode, with Pres-
Bit
Read/Write
TCNTn
TCNTn
TCNTn
(clk
(clk
(clk
OCRnx
OCRnx
TOVn
OCFnx
(CTC)
OCFnx
clk
clk
clk
clk
clk
clk
I/O
I/O
I/O
I/O
I/O
I/O
Tn
Tn
Tn
/8)
/8)
/8)
7
COM0A
1
R/W
shows the setting of OCF0B in all modes and OCF0A in all modes except CTC
shows the setting of OCF0A and the clearing of TCNT0 in CTC mode and fast
caler (f
clk_I/O
6
COM0A
0
R/W
OCRnx - 1
MAX - 1
TOP - 1
/8)
5
COM0B
1
R/W
4
COM0B
0
R/W
OCRnx
MAX
TOP
3
–
R
OCRnx Value
TOP
2
–
R
OCRnx + 1
BOTTOM
BOTTOM
clk_I/O
1
WGM0
1
R/W
/8)
0
WGM0
0
R/W
BOTTOM + 1
BOTTOM + 1
OCRnx + 2
TCCR0A
clk_I/O
7593K–AVR–11/09
/8)