ATA6613 ATMEL Corporation, ATA6613 Datasheet - Page 113

• Manufacturer Part Number: ATA6613
• Description: Ata6613
• Manufacturer: ATMEL Corporation

6.12
6.12.1
Figure 6-27. 8-bit Timer/Counter Block Diagram
9111C–AUTO–02/08
8-bit Timer/Counter0 with PWM
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. The main features are:
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•
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A simplified block diagram of the 8-bit Timer/Counter is shown in
cific I/O Register and bit locations are listed in the
page
The PRTIM0 bit in
enable Timer/Counter0 module.
Timer/Counter
TCCRnA
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)
OCRnA
TCNTn
OCRnB
=
=
125.
Direction
Count
Clear
“Power Reduction Register - PRR” on page 66
Control Logic
TOP
=
TCCRnB
BOTTOM
Fixed
Value
TOP
clk
= 0
TN
Prescaler
(Int.Req.)
(Int.Req.)
OCnB
OCnA
Generation
Generation
Waveform
Waveform
“8-bit Timer/Counter Register Description” on
ATA6612/ATA6613
TOVn
(Int.Req.)
OCnA
OCnB
Oscillator
T/C
Figure
clk
must be written to zero to
I/O
6-27. The device-spe-
TOSC1
TOSC2
113