ATmega328P datasheet(94/448 Pages) ATMEL

部品番号	ATmega328P

部品情報	8-bit Microcontroller with 4/8/16/32K Bytes In-System Programmable Flash

PDF	448 Pages

Scroll/Zoom	100%

メーカー	ATMEL [ATMEL Corporation]

ホームページ	http://www.atmel.com

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94 / 448 page

8161D–AVR–10/09

ATmega48PA/88PA/168PA/328P

14. 8-bit Timer/Counter0 with PWM

14.1

Features

• Two Independent Output Compare Units

• Double Buffered Output Compare Registers

• Clear Timer on Compare Match (Auto Reload)

• Glitch Free, Phase Correct Pulse Width Modulator (PWM)

• Variable PWM Period

• Frequency Generator

• Three Independent Interrupt Sources (TOV0, OCF0A, and OCF0B)

14.2

Overview

Timer/Counter0 is a general purpose 8-bit Timer/Counter module, with two independent Output

Compare Units, and with PWM support. It allows accurate program execution timing (event man-

agement) and wave generation.

A simplified block diagram of the 8-bit Timer/Counter is shown in Figure 14-1. For the actual

placement of I/O pins, refer to ”Pinout ATmega48PA/88PA/168PA/328P” on page 2. CPU

accessible I/O Registers, including I/O bits and I/O pins, are shown in bold. The device-specific

I/O Register and bit locations are listed in the ”Register Description” on page 106.

The PRTIM0 bit in ”Minimizing Power Consumption” on page 42 must be written to zero to

enable Timer/Counter0 module.

ATmega328P データシート(PDF) 94 Page - ATMEL Corporation