ATmega88PA Automotive Atmel Corporation, ATmega88PA Automotive Datasheet - Page 111

• Manufacturer Part Number: ATmega88PA Automotive
• Manufacturer: Atmel Corporation

16. 16-bit Timer/Counter1 with PWM
16.1
16.2
9223B–AVR–09/11
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
accessible I/O Registers, including I/O bits and I/O pins, are shown in bold. The device-spe-
cific I/O Register and bit locations are listed in the
The PRTIM1 bit in
enable Timer/Counter1 module.
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)
Atmel ATmega48PA/88PA/168PA [Preliminary]
“PRR – Power Reduction Register” on page 45
“Pinout Atmel
®
ATmega48PA/88PA/168PA” on page
“Register Description” on page
Figure
must be written to zero to
16-1. For the actual
133.
2. CPU
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