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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) 422 Page - Renesas Technology Corp |
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H8S/2240 数据表(HTML) 422 Page - Renesas Technology Corp |
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422 / 818 page  Section 10 8-Bit Timers Rev.3.00 Mar. 26, 2007 Page 380 of 772 REJ09B0355-0300 10.5 Sample Application In the example below, the 8-bit timer is used to generate a pulse output with a selected duty cycle, as shown in figure 10.9. The control bits are set as follows: [1] In TCR, bit CCLR1 is cleared to 0 and bit CCLR0 is set to 1 so that the timer counter is cleared when its value matches the constant in TCORA. [2] In TCSR, bits OS3 to OS0 are set to B'0110, causing the output to change to 1 at a TCORA compare match and to 0 at a TCORB compare match. With these settings, the 8-bit timer provides output of pulses at a rate determined by TCORA with a pulse width determined by TCORB. No software intervention is required. TCNT H'FF Counter clear TCORA TCORB H'00 TMO Figure 10.9 Example of Pulse Output |
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