ATmega16 datasheet(83/315 Pages) ATMEL

83 / 315 page

ATmega16(L)

2466E–AVR–10/02

16-bit Timer/Counter1 The 16-bit Timer/Counter unit allows accurate program execution timing (event man-

agement), wave generation, and signal timing measurement. The main features are:

• True 16-bit Design (i.e., Allows 16-bit PWM)

• Two Independent Output Compare Units

• Double Buffered Output Compare Registers

• One Input Capture Unit

• Input Capture Noise Canceler

• Clear Timer on Compare Match (Auto Reload)

• Glitch-free, Phase Correct Pulse Width Modulator (PWM)

• Variable PWM Period

• Frequency Generator

• External Event Counter

• Four Independent Interrupt Sources (TOV1, OCF1A, OCF1B, and ICF1)

Overview

Most register and bit references in this document are written in general form. A lower

case “n” replaces the Timer/Counter number, and a lower case “x” replaces the output

compare unit channel. However, when using the register or bit defines in a program, the

precise form must be used (i.e., TCNT1 for accessing Timer/Counter1 counter value

and so on). The physical I/O Register and bit locations for ATmega16 are listed in the

“16-bit Timer/Counter Register Description” on page 104.

A simplified block diagram of the 16-bit Timer/Counter is shown in Figure 40. CPU

accessible I/O Registers, including I/O bits and I/O pins, are shown in bold.

ATMEGA16 Datasheet(PDF) 83 Page - ATMEL Corporation