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ATtiny167-ESSZ датащи(PDF) 134 Page - ATMEL Corporation |
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ATtiny167-ESSZ датащи(HTML) 134 Page - ATMEL Corporation |
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134 / 282 page ![]() 134 7728D–AVR–07/09 ATtiny87/ATtiny167 • Bit 1:0 – WGM11:0: Waveform Generation Mode Combined with the WGM13:2 bits found in the TCCR1B Register, these bits control the count- ing sequence of the counter, the source for maximum (TOP) counter value, and what type of waveform generation to be used, see Table 12-4. Modes of operation supported by the Timer/Counter unit are: Normal mode (counter), Clear Timer on Compare match (CTC) mode, and three types of Pulse Width Modulation (PWM) modes. (See “Modes of Operation” on page 122.). Note: 1. The CTC1 and PWM11:0 bit definition names are obsolete. Use the WGM12:0 definitions. However, the functionality and location of these bits are compatible with previous versions of the timer. Table 12-4. Waveform Generation Mode Bit Description (1) Mode WGM13 WGM12 (CTC1) WGM11 (PWM11) WGM10 (PWM10) Timer/Counter Mode of Operation TOP Update of OCR1A/B at TOV1 Flag Set on 0 0 0 0 0 Normal 0xFFFF Immediate MAX 1 0 0 0 1 PWM, Phase Correct, 8-bit 0x00FF TOP BOTTOM 2 0 0 1 0 PWM, Phase Correct, 9-bit 0x01FF TOP BOTTOM 3 0 011 PWM, Phase Correct, 10-bit 0x03FF TOP BOTTOM 4 0 1 0 0 CTC OCR1A Immediate MAX 5 0 1 0 1 Fast PWM, 8-bit 0x00FF TOP TOP 6 0 1 1 0 Fast PWM, 9-bit 0x01FF TOP TOP 7 0 1 1 1 Fast PWM, 10-bit 0x03FF TOP TOP 8 1 000 PWM, Phase and Frequency Correct ICR1 BOTTOM BOTTOM 9 1 001 PWM, Phase and Frequency Correct OCR1A BOTTOM BOTTOM 10 1 0 1 0 PWM, Phase Correct ICR1 TOP BOTTOM 11 1 0 1 1 PWM, Phase Correct OCR1A TOP BOTTOM 12 1 1 0 0 CTC ICR1 Immediate MAX 13 1 1 0 1 (Reserved) – – – 14 1 110 Fast PWM ICR1 TOP TOP 15 1 1 1 1 Fast PWM OCR1A TOP TOP |
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