Rainbow-electronics ATtiny43U Bedienungsanleitung PDF herunterladen (Seite 95)

8048B–AVR–03/09

12.9.6 TCNT1 – Timer/Counter Register

The Timer/Counter Register gives direct access, both for read and write operations, to the

Timer/Counter unit 8-bit counter. Writing to the TCNTn Register blocks (removes) the Compare

Match on the following timer clock. Modifying the counter (TCNTn) while the counter is running,

introduces a risk of missing a Compare Match between TCNTn and the OCRnx Registers.

12.9.7 OCR0A – Output Compare Register A

12.9.8 OCR1A – Output Compare Register A

The Output Compare Register A contains an 8-bit value that is continuously compared with the

counter value (TCNTn). A match can be used to generate an Output Compare interrupt, or to

generate a waveform output on the OCnA pin.

12.9.9 OCR0B – Output Compare Register B

12.9.10 OCR1B – Output Compare Register B

The Output Compare Register B contains an 8-bit value that is continuously compared with the

counter value (TCNTn). A match can be used to generate an Output Compare interrupt, or to

generate a waveform output on the OCnB pin.

12.9.11 TIMSK0 – Timer/Counter 0 Interrupt Mask Register

Bit 76543210

0x2D (0x4D) TCNT1[7:0] TCNT1