AT90USB647 Atmel Corporation, AT90USB647 Datasheet - Page 110
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AT90USB647
Manufacturer Part Number
AT90USB647
Description
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
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Part Number
Manufacturer
Quantity
Price
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AT90USB647-MU
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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)
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