at90pwm81-16se ATMEL Corporation, at90pwm81-16se Datasheet - Page 84

• Manufacturer Part Number: at90pwm81-16se
• Description: 8-bit Avr Microcontroller With 8k Bytes In- System Programmable Flash
• Manufacturer: ATMEL Corporation

12. Reduced 16-bit Timer/Counter1
12.1
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Overview
AT90PWM81
The 16-bit Timer/Counter unit allows accurate program execution timing (event management). The main
features are:
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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
of I/O pins, refer to
I/O pins, are shown in bold. The device-specific I/O Register and bit locations are listed in the
Timer/Counter Register Description” on page
The PRTIM1 bit in
Timer/Counter1 module.
Clear Timer on Compare Match (Auto Reload)
One Input Capture Unit
Input Capture Noise Cancelerr
External Event Counter
Two independent interrupt Sources (TOV1, ICF1)
“Pin out description” on page
“Power Reduction Register” on page 45
95.
6. CPU accessible I/O Registers, including I/O bits and
Figure
must be written to zero to enable
12-1. For the actual placement
7734M–AVR–03/10
“16-bit