ATMEGA168PA-PU Atmel, ATMEGA168PA-PU Datasheet - Page 114
ATMEGA168PA-PU
Manufacturer Part Number
ATMEGA168PA-PU
Description
MCU, 8BIT, AVR, 16K FLASH, 28PDIP
Manufacturer
Atmel
Datasheet
1.ATMEGA48A-PU.pdf
(566 pages)
Specifications of ATMEGA168PA-PU
Controller Family/series
Atmega
No. Of I/o's
23
Eeprom Memory Size
512Byte
Ram Memory Size
1KB
Cpu Speed
20MHz
No.
RoHS Compliant
Core Size
8bit
Program Memory Size
16KB
Oscillator Type
External, Internal
Rohs Compliant
Yes
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15. 16-bit Timer/Counter1 with PWM
15.1
15.2
8271C–AVR–08/10
Features
Overview
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The 16-bit Timer/Counter unit allows accurate program execution timing (event management),
wave generation, and signal timing measurement.
Most register and bit references in this section 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.
A simplified block diagram of the 16-bit Timer/Counter is shown in
placement of I/O pins, refer to
page
device-specific I/O Register and bit locations are listed in the
135.
The PRTIM1 bit in
enable Timer/Counter1 module.
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
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)
2. CPU accessible I/O Registers, including I/O bits and I/O pins, are shown in bold. The
”PRR – Power Reduction Register” on page 45
”Pinout ATmega48A/48PA/88A/88PA/168A/168PA/328/328P” on
”Register Description” on page
Figure
must be written to zero to
15-1. For the actual
114
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