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R8C/29 Datasheet(PDF) 234 Page - Renesas Technology Corp |
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R8C/29 Datasheet(HTML) 234 Page - Renesas Technology Corp |
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234 / 471 page  R8C/28 Group, R8C/29 Group 14. Timers Rev.2.10 Sep 26, 2008 Page 217 of 441 REJ09B0279-0210 Table 14.25 Specifications of Real-Time Clock Mode Item Specification Count source fC4 Count operation Increment Count start condition 1 (count starts) is written to TSTART bit in TRECR1 register Count stop condition 0 (count stops) is written to TSTART bit in TRECR1 register Interrupt request generation timing Select any one of the following: • Update second data • Update minute data • Update hour data • Update day of week data • When day of week data is set to 000b (Sunday) Read from timer When reading TRESEC, TREMIN, TREHR, or TREWK register, the count value can be read. The values read from registers TRESEC, TREMIN, and TREHR are represented by the BCD code. Write to timer When bits TSTART and TCSTF in the TRECR1 register are set to 0 (timer stops), the value can be written to registers TRESEC, TREMIN, TREHR, and TREWK. The values written to registers TRESEC, TREMIN, and TREHR are represented by the BCD codes. Select function • 12-hour mode/24-hour mode switch function |
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