Rainbow-electronics ATmega162V Manual do Utilizador descarregar pdf (Página 155)

155

ATmega162/V

2513E–AVR–09/03

Timer/Counter Interrupt Flag

• Bit 4 – OCF2: Output Compare Flag 2

The OCF2 bit is set (one) when a Compare Match occurs between the Timer/Counter2

and the data in OCR2 – Output Compare Register2. OCF2 is cleared by hardware when

executing the corresponding interrupt handling vector. Alternatively, OCF2 is cleared by

writing a logic one to the flag. When the I-bit in SREG, OCIE2 (Timer/Counter2 Com-

pare Match Interrupt Enable), and OCF2 are set (one), the Timer/Counter2 Compare

Match Interrupt is executed.

• Bit 2 – TOV2: Timer/Counter2 Overflow Flag

The TOV2 bit is set (one) when an overflow occurs in Timer/Counter2. TOV2 is cleared

by hardware when executing the corresponding interrupt handling vector. Alternatively,

TOV2 is cleared by writing a logic one to the flag. When the SREG I-bit, TOIE2

(Timer/Counter2 Overflow Interrupt Enable), and TOV2 are set (one), the

Timer/Counter2 Overflow interrupt is executed. In PWM mode, this bit is set when

Timer/Counter2 changes counting direction at 0x00.

Bit 76543210

TOV1 OCF1A OC1FB OCF2 ICF1 TOV2 TOV0 OCF0 TIFR

Read/Write R/W R/W R/W R/W R/W R/W R/W R/W

Initial Value00000000

1 2 ... 150 151 152 153 154 155 156 157 158 159 160 ... 322 323

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Rainbow-electronics ATmega162V Manual do Utilizador Página 155