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HD64F2149YV Datasheet(PDF) 369 Page - Renesas Technology Corp |
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HD64F2149YV Datasheet(HTML) 369 Page - Renesas Technology Corp |
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369 / 1075 page ![]() Section 11 16-Bit Free-Running Timer Rev. 3.00 Jan 18, 2006 page 341 of 1044 REJ09B0280-0300 Contention between OCR Write and Compare-Match: If a compare-match occurs during the state after an OCRA or OCRB write cycle, the write takes priority and the compare-match signal is inhibited. Figure 11.20 shows this type of contention. If automatic addition of OCRAR/OCRAF to OCRA is selected, and a compare-match occurs in the cycle following the OCRA, OCRAR and OCRAF write cycle, the OCRA, OCRAR and OCRAF write takes priority and the compare-match signal is inhibited. Consequently, the result of the automatic addition is not written to OCRA. Figure 11.21 shows this timing T1 T2 OCRA or OCRB write cycle Address Internal write signal φ FRC OCR N M Write data OCR address N N + 1 Compare-match signal Prohibited Figure 11.20 Contention between OCR Write and Compare-Match (When Automatic Addition Function Is Not Used) |
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