ATMEGA8515_10 datasheet(94/257 Pages) ATMEL

Part #	ATMEGA8515

Description	8-bit Microcontroller with 8K Bytes In-System Programmable Flash

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Manufacturer	ATMEL [ATMEL Corporation]

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94

ATmega8515(L)

2512K–AVR–01/10

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

Register – TIFR

• 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 $00.

• 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

7654

321

0

TOV1

OCF1A

OCF1B

–

ICF1

–TOV0

OCF0

TIFR

Read/Write

R/W

Initial Value

0000

000

0

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