Rainbow-electronics ATmega162V Manual de usuario descargar pdf (Pagina 102)

102

ATmega162/V

2513E–AVR–09/03

• Bit 0 – OCIE0: Timer/Counter0 Output Compare Match Interrupt Enable

When the OCIE0 bit is written to one, and the I-bit in the Status Register is set (one), the

Timer/Counter0 Compare Match interrupt is enabled. The corresponding interrupt is

executed if a Compare Match in Timer/Counter0 occurs, i.e., when the OCF0 bit is set in

the Timer/Counter Interrupt Flag Register – TIFR.

Timer/Counter Interrupt Flag

• Bit 1 – TOV0: Timer/Counter0 Overflow Flag

The bit TOV0 is set (one) when an overflow occurs in Timer/Counter0. TOV0 is cleared

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

TOV0 is cleared by writing a logic one to the flag. When the SREG I-bit, TOIE0

(Timer/Counter0 Overflow Interrupt Enable), and TOV0 are set (one), the

Timer/Counter0 Overflow interrupt is executed. In phase correct PWM mode, this bit is

set when Timer/Counter0 changes counting direction at 0x00.

• Bit 0 – OCF0: Output Compare Flag 0

The OCF0 bit is set (one) when a Compare Match occurs between the Timer/Counter0

and the data in OCR0 – Output Compare Register0. OCF0 is cleared by hardware when

executing the corresponding interrupt handling vector. Alternatively, OCF0 is cleared by

writing a logic one to the flag. When the I-bit in SREG, OCIE0 (Timer/Counter0 Com-

pare match Interrupt Enable), and OCF0 are set (one), the Timer/Counter0 Compare

Match Interrupt is executed.

Bit 76543210

TOV1 OCF1A OCF1B 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 ... 97 98 99 100 101 102 103 104 105 106 107 ... 322 323

Sin comentarios

Rainbow-electronics ATmega162V Manual de usuario Pagina 102