A000003 Arduino, A000003 Datasheet - Page 139
![MCU, MPU & DSP Development Tools MINI](/photos/36/49/364973/arduino_mini_sml.jpg)
A000003
Manufacturer Part Number
A000003
Description
MCU, MPU & DSP Development Tools MINI
Manufacturer
Arduino
Series
-r
Type
MCUr
Specifications of A000003
Processor To Be Evaluated
Atmega328
Processor Series
ATmega
Data Bus Width
8 bit
Interface Type
USB, RS-232
Operating Supply Voltage
7 V to 9 V
Contents
Board
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
ATmega168
- Current page: 139 of 378
- Download datasheet (8Mb)
17. 8-bit Timer/Counter2 with PWM and Asynchronous Operation
17.1
17.2
2545S–AVR–07/10
Features
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
I/O pins, refer to
I/O bits and I/O pins, are shown in bold. The device-specific I/O Register and bit locations are
listed in the
The PRTIM2 bit in
enable Timer/Counter2 module.
Figure 17-1. 8-bit Timer/Counter Block Diagram
Single Channel Counter
Clear Timer on Compare Match (Auto Reload)
Glitch-free, Phase Correct Pulse Width Modulator (PWM)
Frequency Generator
10-bit Clock Prescaler
Overflow and Compare Match Interrupt Sources (TOV2, OCF2A and OCF2B)
Allows Clocking from External 32 kHz Watch Crystal Independent of the I/O Clock
“Register Description” on page
“Pinout ATmega48/88/168” on page
“Minimizing Power Consumption” on page 40
Timer/Counter
TCCRnA
OCRnA
TCNTn
OCRnB
=
=
Direction
Count
Clear
Control Logic
TOP
152.
=
TCCRnB
Value
BOTTOM
Fixed
TOP
clk
=
Tn
2. CPU accessible I/O Registers, including
0
Figure
17-1. For the actual placement of
ATmega48/88/168
OCnA
(Int.Req.)
OCnB
(Int.Req.)
TOVn
(Int.Req.)
Clock Select
Generation
Generation
Waveform
Waveform
( From Prescaler )
Detector
Edge
must be written to zero to
OCnA
OCnB
Tn
139
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