Rainbow-electronics ATtiny15L Manuel d'utilisateur télécharger pdf (Page 33)

ATtiny15L

1187E–AVR–06/02

The frequency of the PWM will be Timer Clock Frequency divided by OCR1B value + 1.

The exact duty-cycle of the non-inverted PWM output is:

Where:

is the period of the selected Timer/Counter1 Clock Source.

PCK

is the period of the PCK Clock (39.1 ns).

Table 14. Timer/Counter1 Clock Prescale Select

Clock Selection OCR1B PWM Frequency

CK 159 10 kHz

PCK/8 159 20 kHz

PCK/4 213 30 kHz

PCK/4 159 40 kHz

PCK/2 255 50 kHz

PCK/2 213 60 kHz

PCK/2 181 70 kHz

PCK/2 159 80 kHz

PCK/2 141 90 kHz

PCK 255 100 kHz

PCK 231 110 kHz

PCK 213 120 kHz

PCK 195 130 kHz

PCK 181 140 kHz

PCK 169 150 kHz

OCR1A +1()T

× T

PCK

–

OCR1B +1()T

---------------------------------------------------------------------

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 82 83

Pas de commentaire

Rainbow-electronics ATtiny15L Manuel d'utilisateur Page 33