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H8S/2225 数据表(PDF) 503 Page - Renesas Technology Corp |
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H8S/2225 数据表(HTML) 503 Page - Renesas Technology Corp |
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503 / 1071 page ![]() Section 11 16-Bit Timer Pulse Unit (TPU) Rev. 5.00 Aug 08, 2006 page 417 of 982 REJ09B0054-0500 Example of Phase Counting Mode Setting Procedure: Figure 11.25 shows an example of the phase counting mode setting procedure. Phase counting mode Select phase counting mode Start count <Phase counting mode> Select phase counting mode with bits MD3 to MD0 in TMDR. Set the CST bit in TSTR to 1 to start the count operation. [1] [2] [1] [2] Figure 11.25 Example of Phase Counting Mode Setting Procedure 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. 1. Phase counting mode 1 Figure 11.26 shows an example of phase counting mode 1 operation, and table 11.32 summarizes the TCNT up/down-count conditions. TCNT value Time Down-count Up-count TCLKA (channels 1 and 5*) TCLKC (channels 2 and 4*) TCLKB (channels 1 and 5*) TCLKD (channels 2 and 4*) Note: * Not available in the H8S/2227 Group. Figure 11.26 Example of Phase Counting Mode 1 Operation |
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