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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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ATtiny261-ESSZ Scheda tecnica(PDF) 95 Page - ATMEL Corporation |
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ATtiny261-ESSZ Scheda tecnica(HTML) 95 Page - ATMEL Corporation |
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95 / 227 page  95 7753C–AVR–07/09 ATtiny261/ATtiny461/ATtiny861 Figure 16-2. Timer/Counter1 Synchronization Register Block Diagram. 16.2.5 Definitions Many register and bit references in this section are written in general form. A lower case “n” replaces the Timer/Counter number, in this case 0. A lower case “x” replaces the Output Com- pare Unit, in this case Compare Unit A, B, C or D. However, when using the register or bit defines in a program, the precise form must be used, i.e., TCNT1 for accessing Timer/Counter1 counter value and so on. The definitions in Table 16-1 are used extensively throughout the document. 8-BIT DATABUS OCR1A OCR1A_SI TCNT1_SO OCR1B OCR1B_SI OCR1C OCR1C_SI TCCR1A TCCR1A_SI TCCR1B TCCR1B_SI TCNT1 TCNT1_SI OCF1A OCF1A_SI OCF1B OCF1B_SI TOV1 TOV1_SI TOV1_SO OCF1B_SO OCF1A_SO TCNT1 S A S A PCKE CK PCK IO-registers Input synchronization registers Timer/Counter1 Output synchronization registers SYNC MODE ASYNC MODE 1 CK Delay 1/2 CK Delay ~1/2 CK Delay 1 PCK Delay 1 PCK Delay ~1 CK Delay TCNT1 OCF1A OCF1B TOV1 1/2 CK Delay 1 CK Delay OCR1D OCR1D_SI TC1H TC1H_SI TCCR1C TCCR1C_SI TCCR1D OCF1D OCF1D_SI OCF1D_SO OCF1D TC1H_SO TC1H TCCR1D_SI Table 16-1. Definitions BOTTOM The counter reaches the BOTTOM when it becomes 0. MAX The counter reaches its MAXimum value when it becomes 0x3FF (decimal 1023). TOP The counter reaches the TOP value (stored in the OCR1C) when it becomes equal to the highest value in the count sequence. The TOP has a value 0x0FF as default after reset. |
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