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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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H8S/2240 数据表(PDF) 379 Page - Renesas Technology Corp |
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H8S/2240 数据表(HTML) 379 Page - Renesas Technology Corp |
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379 / 818 page  Section 9 16-Bit Timer Pulse Unit (TPU) Rev.3.00 Mar. 26, 2007 Page 337 of 772 REJ09B0355-0300 Examples of Phase Counting Mode Operation In phase counting mode, TCNT counts up or down according to the phase difference between two external clocks. There are four modes, according to the count conditions. Phase counting mode 1: Figure 9.26 shows an example of phase counting mode 1 operation, and table 9.8 summarizes the TCNT up/down-count conditions. TCNT value Time Down-count Up-count TCLKA (channel 1) TCLKC (channel 2) TCLKB (channel 1) TCLKD (channel 2) Figure 9.26 Example of Phase Counting Mode 1 Operation Table 9.8 Up/Down-Count Conditions in Phase Counting Mode 1 TCLKA (Channel 1) TCLKC (Channel 2) TCLKB (Channel 1) TCLKD (Channel 2) Operation High level Low level Low level High level Up-count High level Low level High level Low level Down-count Legend: : Rising edge : Falling edge |
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