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SH7021 Datasheet(PDF) 265 Page - Renesas Technology Corp |
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SH7021 Datasheet(HTML) 265 Page - Renesas Technology Corp |
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265 / 509 page  RENESAS 249 CK N – 1 N N + 1 External clock input pin TCNT input clock TCNT Figure 10.18 Count Timing for External Clock Sources Compare-Match Waveform Output Function: For ITU channels 0, 1, 3, and 4, the output from the corresponding TIOCA and TIOCB pins upon compare matches A and B can be in three modes: 0-level output, 1-level output, or toggle. Toggle output cannot be selected in channel 2. • Procedure for selecting the waveform output mode (figure 10.19): 1. Set the TIOR to select 0 output, 1 output, or toggle output for compare match output. The compare match output pin will output 0 until the first compare match occurs. 2. Set a value in the GRA or GRB to select the compare match timing. 3. Set the STR bit in the TSTR to 1 to start counting. Output selection Select waveform output mode Select output timing Start counting Waveform output (1) (2) (3) Figure 10.19 Procedure for Selecting the Compare Match Waveform Output Mode |
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