Datasheet

22. 8-bit Timer/Counter2 with PWM
22.1. Features
• Single Channel Counter
• Clear Timer on Compare Match (Auto Reload)
• Glitch-free, phase Correct Pulse Width Modulator (PWM)
• Frequency Generator
• External Event Counter
• 10-bit Clock Prescaler
• Overflow and Compare Match Interrupt Sources (TOV2 and OCF2)
22.2. Overview
Timer/Counter2 is a general purpose, single channel, 8-bit Timer/Counter module. A simplified block
diagram of the 8-bit Timer/Counter is shown in the figure below. For the actual placement of I/O pins, refer
to Pin Configurations. 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 225.
Figure 22-1 8-bit Timer/Counter Block Diagram
Timer/Counte r
DATA BUS
=
TCNTn
Waveform
Gene ration
OCn
= 0
Control Logic
= 0xFF
TOPBOTTOM
count
clear
direction
TOVn
(Int. Req.)
OCn
(Int. Req.)
OCRn
TCCRn
clk
Tn
Edge
Detector
(From Prescaler)
Tn
Clock Select
Related Links
Pin Configurations on page 14
Atmel ATmega64A [DATASHEET]
Atmel-8160E-ATmega64A_Datasheet_Complete-09/2015
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