A000047 Arduino, A000047 Datasheet - Page 157

• Manufacturer Part Number: A000047
• Description: MCU, MPU & DSP Development Tools Mega2560
• Manufacturer: Arduino
• Series: -r
• Type: MCUr

Specifications of A000047

• Processor To Be Evaluated: ATmega2560
• Interface Type: USB, I2C, SPI
• Dimensions: 4 in x 2.1 in
• Operating Supply Voltage: 5 V
• Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ATmega2560

2549M–AVR–09/10
Figure 16-12
frequency correct PWM mode the OCRnx Register is updated at BOTTOM. The timing diagrams
will be the same, but TOP should be replaced by BOTTOM, TOP-1 by BOTTOM+1 and so on.
The same renaming applies for modes that set the TOVn Flag at BOTTOM.
Figure 16-12. Timer/Counter Timing Diagram, no Prescaling
Figure 16-13
Figure 16-13. Timer/Counter Timing Diagram, with Prescaler (f
(PC and PFC PWM)
and ICF n
and ICFn
(CTC and FPWM)
TOVn
(Update at TOP)
(PC and PFC PWM)
TOVn
(CTC and FPWM)
(Update at TOP)
TCNTn
TCNTn
OCRnx
as TOP)
(clk
TCNTn
TCNTn
OCRnx
(clk
as TOP)
clk
clk
clk
clk
I/O
I/O
shows the count sequence close to TOP in various modes. When using phase and
shows the same timing data, but with the prescaler enabled.
(FPWM)
(FPWM)
I/O
Tn
I/O
Tn
/8)
/1)
(if used
(if used
TOP - 1
TOP - 1
TOP - 1
TOP - 1
Old OCRnx Value
ATmega640/1280/1281/2560/2561
Old OCRnx Value
TOP
TOP
TOP
TOP
BOTTOM
BOTTOM
TOP - 1
TOP - 1
clk_I/O
New OCRnx Value
New OCRnx Value
/8)
BOTTOM + 1
BOTTOM + 1
TOP - 2
TOP - 2
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