Rainbow-electronics ATtiny26L Manual de usuario descargar pdf (Pagina 56)

ATtiny26(L)

1477B–AVR–04/02

In PWM mode, the Timer Overflow Flag – TOV1, is set as in normal Timer/Counter

mode. Timer Overflow Interrupt1 operates exactly as in normal Timer/Counter mode,

i.e., it is executed when TOV1 is set provided that Timer Overflow Interrupt and global

interrupts are enabled. This also applies to the Timer Output Compare flags and

interrupts.

The frequency of the PWM will be Timer Clock 1 Frequency divided by (OCR1C

value + 1). See the following equation:

Resolution shows how many bit is required to express the value in the OCR1C Register.

It is calculated by following equation

Resolution

PWM

= log

(OCR1C + 1)

Table 26. PWM Outputs OCR1x = $00 or OCR1C, x = A or B

COM1x1 COM1x0 OCR1x Output OC1x Output OC1x

01$00 L H

01OCR1CH L

1 0 $00 L Not connected

1 0 OCR1C H Not connected

1 1 $00 H Not connected

1 1 OCR1C L Not connected

PWM

TCK1

OCR1C + 1()

------------------------------------=

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 150 151

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Rainbow-electronics ATtiny26L Manual de usuario Pagina 56