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AT90SCR100 数据表(PDF) 103 Page - ATMEL Corporation |
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AT90SCR100 数据表(HTML) 103 Page - ATMEL Corporation |
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103 / 433 page  103 TPR0327AY–SMS–30Jan09 AT90SCR100 13.1.9.4 OCR0A – Output Compare Register A The Output Compare Register A contains an 8-bit value that is continuously compared with the counter value (TCNT0). A match can be used to generate an Output Compare interrupt, or to generate a waveform output on the OC0A pin. 13.1.9.5 OCR0B – Output Compare Register B The Output Compare Register B contains an 8-bit value that is continuously compared with the counter value (TCNT0). A match can be used to generate an Output Compare interrupt, or to generate a waveform output on the OC0B pin. 13.1.9.6 TIMSK0 – Timer/Counter Interrupt Mask Register • Bits 7..3 – Res: Reserved Bits These bits are reserved bits and will always read as zero. • Bit 2 – OCIE0B: Timer/Counter Output Compare Match B Interrupt Enable When the OCIE0B bit is written to one, and the I-bit in the Status Register is set, the Timer/Counter Compare Match B interrupt is enabled. The corresponding interrupt is executed if a Compare Match in Timer/Counter occurs, i.e., when the OCF0B bit is set in the Timer/Counter Interrupt Flag Register – TIFR0. • Bit 1 – OCIE0A: Timer/Counter0 Output Compare Match A Interrupt Enable When the OCIE0A bit is written to one, and the I-bit in the Status Register is set, the Timer/Counter0 Compare Match A interrupt is enabled. The corresponding interrupt is executed if a Compare Match in Timer/Counter0 occurs, i.e., when the OCF0A bit is set in the Timer/Counter 0 Interrupt Flag Register – TIFR0. • Bit 0 – TOIE0: Timer/Counter0 Overflow Interrupt Enable When the TOIE0 bit is written to one, and the I-bit in the Status Register is set, the Timer/Counter0 Overflow interrupt is enabled. The corresponding interrupt is executed if an overflow in Timer/Counter0 occurs, i.e., when the TOV0 bit is set in the Timer/Counter 0 Inter- rupt Flag Register – TIFR0. Bit 7654 3 2 1 0 0x27 (0x47) OCR0A [7..0] OCR0A Read/write R/W R/W R/W R/W R/W R/W R/W R/W Initial value 0000 0 0 0 0 0x00 Bit 7654 3 2 1 0 0x26 (0x46) OCR0B [7..0] OCR0B Read/write R/W R/W R/W R/W R/W R/W R/W R/W Initial value 0000 0 0 0 0 0x00 Bit 7654 3 2 1 0 0x6E ----- OCIE0B OCIE0A TOIE0 TIMSK0 Read/write RRRRR R/W R/W R/W Initial value 0000 0 0 0 0 0x00 |
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