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RV5C386A Datasheet(PDF) 17 Page - RICOH electronics devices division |
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RV5C386A Datasheet(HTML) 17 Page - RICOH electronics devices division |
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17 / 42 page  PRELIMINARY RV5C386A 12345 - 17 - (Note that any mismatch between current time and preset alarm time specified by the Alarm_W registers may disable the alarm interrupt circuit.) * When the 12-hour mode is selected, the hour digits read 12 and 32 for 0 a.m. and 0 p.m., respectively. (See "13.2. 1. – (2). /12 * 24: 12-/24-hour Mode Selection Bit"). * WW0 to WW6 correspond to W4, W2, and W1 of the day-of-week counter with settings ranging from (0, 0, 0) to (1, 1, 0). * WW0 to WW6 with respective settings of 0 disable the outputs of the Alarm_W Registers. Example of Alarm Time Setting Alarm Day-of-week 12-hour mode 24-hour mode Preset alarm time Sun. Mon. Tue. Wed. Th. Fri. Sat. 10 hr. 1 hr. 10 min. 1 min. 10 hr. 1 hr. 10 min. 1 min. WW0 WW1 WW2 WW3 WW4 WW5 WW6 00:00 a.m. on all days 1 1 1 1 1 1 1 1 2 0 0 0 0 0 0 01:30 a.m. on all days 1 1 1 1 1 1 1 0 1 3 0 0 1 3 0 11:59 a.m. on all days 1 1 1 1 1 1 1 1 1 5 9 1 1 5 9 00:00 p.m. on Mon. to Fri. 0 1 1 1 1 1 0 3 2 0 0 1 2 0 0 01:30 p.m. on Sun. 1 0 0 0 0 0 0 2 1 3 0 1 3 3 0 11:59 p.m. on Mon. ,Wed., and Fri. 0 1 0 1 0 1 0 3 1 5 9 2 3 5 9 Note that the correspondence between WW0 to WW6 and the days of the week shown in the above table is only an example and not mandatory. 13.2.8. Alarm_D Register (Address B-Ch) • Alarm_D Minute Register (Address Bh) D7 D6 D5 D4 D3 D2 D1 D0 - DM40 DM20 DM10 DM8 DM4 DM2 DM1 (For Writing) 0 DM40 DM20 DM10 DM8 DM4 DM2 DM1 (For Reading) 0 Indefinite Indefinite Indefinite Indefinite Indefinite Indefinite Indefinite Default Settings *) • Alarm_D Hour Register (Address Ch) D7 D6 D5 D4 D3 D2 D1 D0 - - DH20 DP ⋅/A DH10 DH8 DH4 DH2 DH1 (For Writing) 0 0 DH20 DP ⋅/A DH10 DH8 DH4 DH2 DH1 (For Reading) 0 0 Indefinite Indefinite Indefinite Indefinite Indefinite Indefinite Default Settings *) *) Default settings: Default value means read/written values when the XSTP bit is set to “1” due to power-on from 0 volts or supply voltage drop. * The D5 bit represents DP/A when the 12-hour mode is selected (0 for a.m. and 1 for p.m.) and DH20 when the 24-hour mode is selected (tens in the hour digits). * The Alarm_D registers should not have any non-existent alarm time settings. (Note that any mismatch between current time and preset alarm time specified by the Alarm_D registers may disable the alarm interrupt circuit.) * When the 12-hour mode is selected, the hour digits read 12 and 32 for 0a.m. and 0p.m., respectively. (see "13.2.1. (2) /12 * 24: 12-/24-hour Mode Selection Bit"). |
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