ATmega324P datasheet(131/377 Pages) ATMEL

Part #	ATmega324P

Description	8-bit Microcontroller with 16/32/64K Bytes In-System Programmable Flash

PDF	377 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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131 / 377 page

131

7674F–AVR–09/09

ATmega164P/324P/644P

Figure 14-12. Timer/Counter Timing Diagram, no Prescaling

Figure 14-13 shows the same timing data, but with the prescaler enabled.

Figure 14-13. Timer/Counter Timing Diagram, with Prescaler (f

clk_I/O/8)

14.11 Register Description

14.11.1

TCCR1A – Timer/Counter1 Control Register A

• Bit 7:6 – COMnA1:0: Compare Output Mode for Channel A

• Bit 5:4 – COMnB1:0: Compare Output Mode for Channel B

TOVn (FPWM)

and ICFn (if used

as TOP)

OCRnx

(Update at TOP)

TCNTn

(CTC and FPWM)

TCNTn

(PC and PFC PWM)

TOP - 1

TOP

TOP - 1

TOP - 2

Old OCRnx Value

New OCRnx Value

TOP - 1

TOP

BOTTOM

BOTTOM + 1

clk

(clk

I/O/1)

clk

I/O

TOVn(FPWM)

and ICF n(if used

as TOP)

OCRnx

(Update at TOP)

TCNTn

(CTC and FPWM)

TCNTn

(PC and PFC PWM)

TOP - 1

TOP

TOP - 1

TOP - 2

Old OCRnx Value

New OCRnx Value

TOP - 1

TOP

BOTTOM

BOTTOM + 1

clk

I/O

clk

(clk

I/O/8)

Bit

3210

(0x80)

COM1A1

COM1A0

COM1B1

COM1B0

–

WGM11

WGM10

TCCR1A

Read/Write

R/W

Initial Value

0000

ATmega324P Datasheet(PDF) 131 Page - ATMEL Corporation

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