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TMP47C101 Fiches technique(PDF) 23 Page - Toshiba Semiconductor |
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TMP47C101 Fiches technique(HTML) 23 Page - Toshiba Semiconductor |
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23 / 32 page ![]() TOSHIBA CORPORATION 23/32 TMP47C101/201 Figure 3-4. Port R8 and HOLD (INT1) Pin 3.2 Interval Timer The interval timer can be used to generate an interrupt with a fixed frequency. For an interval timer interrupt (ITMR), one of 4 frequencies can be selected by command. The command reg- ister (OP19) is initialized to “0” during reset. An interval timer interrupt is generated at the first rising edge of the binary counters output after the command has been set. The interval timer is not cleared by command, so that the first interrupt may occur earlier than the preset interrupt period. Example: To set the interval timer interrupt frequency to fc/212 [Hz]. LD A, #0110B OUT A, %OP19 Figure 3-5. Command Register |
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